CSC-101
Line Protection IED
Product Guide
Version V1.10
Doc. Code: 0SF.492.050(E)
Issued Date 2012.8
Copyright owner: Beijing Sifang Automation Co., Ltd.
Note: The company keeps the right to perfect the instruction. If equipments do not agree with the
instruction at anywhere, please contact our company in time. We will provide you with corresponding
service.
®
is registered trademark of Beijing Sifang Automation Co., Ltd.
We reserve all rights to this document, even in the event that a patent is issued and a different
commercial proprietary right is registered. Improper use, in particular reproduction and dissemination
to third parties, is not permitted.
This document has been carefully checked. If the user nevertheless detects any errors, he is asked to
notify us as soon as possible.
The data contained in this manual is intended solely for the IED description and is not to be deemed
to be a statement of guaranteed properties. In the interests of our customers, we constantly seek to
ensure that our products are developed to the latest technological standards as a result; it is possible
that there may be some differences between the hardware/software product and this information
product.
Manufacturer:
Beijing Sifang Automation Co., Ltd.
Overview
CSC-101 is selective, reliable and high
speed comprehensive transmission line
protection IED (Intelligent Electronic
Device) for overhead lines, cables or
combination of them. It is a proper solution
for following applications:






three pole tripping

Communication with station automation
system
The IED provides a highly sensitive and
reliable distance protection with innovative
and proven quadrilateral characteristic. In
Overhead lines and cables up to 1000kV
addition to separated zone extension
voltage level
functionality, five distance zones have fully
All type of station arrangement, such as independent measuring and setting values
1.5 breakers arrangement, double bus
which gives high flexibility for all types of
arrangement, etc.
lines and fault resistances. Many other
functions are integrated to provide a
Extremely long lines
complete backup protection library.
Short lines
The wide application flexibility makes the
Heavily loaded lines
IED an excellent choice for both new
installations and retrofitting of the existing
Satisfy the requirement for single and /or
stations
.
1
Feature

Protection and monitoring IED with
extensive
functional
library,
user
configuration possibility and expandable
hardware design to meet with user’s
special requirements

Redundant A/D sampling channels and
interlocked
dual
CPU
modules
guarantee the high security and
reliability of the IED

Single and/or three tripping/reclosing

Highly sensitive startup elements, which
enhance the IED sensitivity in all
disturbance conditions and avoid
maloperation



Negative sequence component
directional element

Impedance directional element

Full scheme phase-to-phase and
phase-to-earth distance protection with
five quadrilateral protection zones and
additional extension zone characteristic
(21, 21N)

Power swing function (68)

Proven and reliable principle of
power swing logic

Unblock elements during power
swing

Current sudden-change startup
element

Zero sequence current startup
element

Permissive Underreach Transfer
Trip (PUTT) scheme

Over current startup element


Undervoltage startup element for
weak-infeed end of line
Permissive Overreach Transfer Trip
(POTT) scheme

Blocking scheme

Inter-tripping scheme

Three kinds of faulty phase selectors are
combined to guarantee the correction of
phase selection:

Current sudden-change phase
selector

Zero sequence and negative
sequence phase selector

Under voltage phase selector
Four kinds of directional elements
cooperate each other so as to determine
the fault direction correctly and promptly:

Memory voltage directional element

Zero sequence component
directional element
All useful types
scheme (85)

Phase
scheme

Particular
scheme

segregated
logic
for
tele-protection
tele-protection
tele-protection

Current reversal

Weak-infeed end

Evolving fault logic

Sequence tripping logic
A complete protection functions library,
include:

2
of
Distance protection with
quadrilateral characteristic
(21,21N)
Feature


Power swing function (68)
IED

Tele-protection scheme based on
distance protection (85-21,21N)

Tele-protection scheme based on
dedicated earth fault protection
(85-67N)

Overcurrent protection (50, 51, 67)

Earth fault protection (50N, 51N,
67N)

Tele-protection contacts for power
line carrier protection interface

Emergency/backup
protection (50, 51)


Emergency/backup earth
protection (50N, 51N)

Switch-onto-fault
(50SOTF)
Up to two fiber optical remote
communication ports for protection
function, like tele-protection, used
up to 100kM single–mode optical
fiber cable

External optical/electrical converter,
which
support
communication
through SDH or PCM, for G.703
(64kbit/s) and G.703E1 (2048kbit/s)

Complete IED information recording:
tripping reports, alarm reports, startup
reports and general operation reports.
Any kinds of reports can be stored up to
2000 and be memorized in case of
power disconnection

Remote communication
overcurrent
fault
protection

Overload protection (50OL)

Overvoltage protection (59)

Undervoltage protection (27)

Circuit breaker failure protection
(50BF)

Poles discordance protection
(50PD)

Dead zone protection (50DZ)

STUB protection (50STUB)

Synchro-check
check (25)

Auto-reclosing function for singleand/or three-phase reclosing (79)

Voltage transformer secondary
circuit supervision (97FF)

Current transformer
circuit supervision
and
energizing
secondary
Self-supervision to all modules in the
3

Up to three electric /optical Ethernet
ports can be selected to communicate
with substation automation system by
IEC61850 or IEC60870-5-103 protocols

Up to two electric RS-485 ports can be
selected to communicate with substation
automation system by IEC60870-5-103
protocol

Time synchronization via network
(SNTP), pulse and IRIG-B mode

Configurable LEDs (Light Emitting
Diodes) and output relays satisfied users’
requirement

Versatile human-machine interface

Multifunctional software tool for setting,
monitoring, fault recording analysis,
configuration, etc.
Function
Protection functions
IEC 61850
Description
ANSI Code
Logical Node
Name
IEC 60617
graphical symbol
Distance protection
Distance protection
21, 21N
PDIS
Z<
Power-swing function
68
RPSB
Zpsb
Tele-protection
Communication scheme for distance
protection
Communication scheme for earth fault
protection
85–21,21N
PSCH
85–67N
PSCH
Current protection
3IINV>
Overcurrent protection
50,51,67
PTOC
3I >>
3I >>>
I0INV>
Earth fault protection
50N, 51N, 67N
PTEF
I0>>
I0>>>
Emergency/backup overcurrent protection
50,51
PTOC
Emergency/backup earth fault protection
50N,51N
PTEF
Switch-onto-fault protection
50SOTF
PSOF
Overload protection
50OL
PTOC
3IINV>
3I >
I0INV>
I0 >
3I >SOTF
I0>SOTF
3I >OL
Voltage protection
Overvoltage protection
59
PTOV
Undervoltage protection
27
PTUV
3U>
3U>>
3U<
3U<<
Breaker protection and control function
3I> BF
Circuit breaker failure protection
50BF
RBRF
I0>BF
I2>BF
Dead zone protection
50DZ
4
Function
STUB protection
50STUB
PTOC
3I>STUB
3I< PD
Poles discordance protection
50PD
RPLD
I0>PD
I2>PD
Synchro-check and energizing check
25
RSYN
Auto-reclosing
79
RREC
Single- and/or three-pole tripping
94-1/3
PTRC
Secondary system supervision
CT secondary circuit supervision
VT secondary circuit supervision
97FF
Monitoring functions
Description
Redundant A/D sampling data self-check
Phase-sequence of voltage and current supervision
3I0 polarity supervision
The third harmonic of voltage supervision
Synchro-check reference voltage supervision
Auxiliary contacts of circuit breaker supervision
Broken conductor check
Self-supervision
Logicality of setting self-check
Fault locator
Fault recorder
Station communication
Description
Front communication port
5
O→I
Function
Isolated RS232 port for maintaining
Rear communication port
0-2 isolated electrical RS485 communication ports, support IEC 60870-5-103 protocol
0-3 Ethernet electrical/optical communication ports, support IEC 61850 protocol or IEC 60870-5-103
protocol
Time synchronization port, support GPS pulse or IRIG-B code
Remote communication
Description
Communication port
Contact(s) interface for power line carrier for tele-protection
0– 2 fiber optical communication port(s) for tele-protection
Connection mode
Direction fiber cable connection
Digital communication network through converter
IED software tools
Functions
Reading measuring value, IED report
Setting
IED testing
Disturbance recording analysis
IED configuration
Printing
6
Function
Remote
Communication
Ports
FO CONNECTION
FO CONNECTION
21
Z<
85-21
PDIS
21N
Z<
PDIS
Zpsb
68
PSCH
PLC Protection
interface 1
85-67N
PSCH
PLC Protection
interface 2
FL
RFLO
RPSB
50
51/67
3I>>>
3I>>,3I>
PTOC
PIOC
50N
I0>>>
PIEF
51N/67N I0>>,I0>
3I>BF
50BF
RBRF
50STUB 3I>STUB
50SOTF
50PD
MEASUREMENT
PTEF
PTOC
MONITORING
PSOF
50PD
59
PD
3U>
PTOV
RPLD
27
3U<
PTUV
STATION
COMMUNICATION
- RS232/485
- RJ45/FO
- IEC61850
- IEC60870-5-103
25
RSYN
Fault recording
79
O→ I
RREC
94
PTRC
7
Protection
Δ3i0: Sudden-change zero sequence current
Startup elements
I_Abrupt: The setting value of current
The startup elements basically work as
sensitive detector to all types of fault. As
soon as fault or disturbance happens, the
highly sensitive startup elements will
operate immediately and initiate all
necessary
protection
functions
for
selective clearance of the fault.
sudden-change elements
Zero sequence current startup
element
Zero sequence current startup element is
applied to improve the fault detection
sensitivity at the high resistance earth
faults. As an auxiliary startup element, it
operates with a short time delay.
The control circuit of tripping relays is
controlled by the startup elements. Only
when one of the startup elements is
triggered, the tripping relays can be
energized to trip. Thus, the maloperation,
due to fatal internal hardware fault, is
avoided in this way.
Overcurrent startup element
If overcurrent protection function is
enabled, over current startup element is
used to improve the fault detection
sensitivity. As an auxiliary startup element,
it operates with short time delay.
Based on different principle, there are four
kinds of startup elements listed below,
which are used to enhance the sensitivity,
and to guarantee the security in case of
IED’s internal hardware faults.
Low-voltage startup element
When one end of the protected line is a
weak-source system, and the fault
sudden-change phase to phase current is
too low to startup the IED, low-voltage
startup element can be in service to startup
the tele-protection scheme with weak-echo
logic.
Sudden-change current startup
element
Sudden-change phase to phase or zero
sequence current elements are the main
startup element that can sensitively detect
most of faults. The criteria are as follows:
Phase selector
The IED applies different phase selectors
to determine the faulty phase to make
tripping
or
Auto-reclosing
initiation
correctly. There are three kinds of phase
selectors based on different principle for
different fault stages.
or
where:
Δi=|| i (K) - i (K-T) | - |i (K-T) - i
Sudden-change current phase
selector
(K-2T) ||
: AB,BC or CA, e.g. iAB= iA-iB
It operates as soon as the sudden- change
current startup element starts up. It makes
a phase selection for fast tripping by
K: The present sample
T: The sample quantity of one power cycle
8
Protection
comparison
amongst
changes
of
phase-phase currents, iAB, iBC and
iCA.
the fault. Therefore transient voltage of
short circuit conditions doesn’t influence
the direction detection. Additionally, it
improves the direction detection sensitivity
for symmetrical or asymmetrical close-in
faults with extremely low voltage. But it
should be noted that the memory voltage
cannot be effective for a long time.
Therefore,
the
following
directional
elements work as supplement to detect
direction correctly.
Symmetrical component phase
selector
During the whole period of fault, the phase
selector checks the angle between
negative sequence current and zero
sequence current vectors to determine
faulty phases. In addition, phase to phase
faults will be discriminated through
impedance characteristic.
Zero sequence component
directional element
Low voltage phase selector
Zero-sequence directional element has
efficient features in the solidly grounded
system. The directional characteristic only
relates to zero sequence impedance angle
of the zero sequence network of power
system, regardless of the quantity of load
current and/or fault resistance throughout
the fault. The characteristic of the zero
sequence directional element is illustrated
in Figure 1
Both current sudden-change phase and
symmetric component phase selector are
not applicable for weak-infeed end of
protected line, so low-voltage phase
selector is employed in this condition
without VT failure. Theoretically, when one,
two or three phase voltages reduce, the
relevant phase(s) is selected as faulty
phase.
3I 0
Directional elements
Four kinds of directional elements are
employed for reliable determination of
various faults direction. The related
protection modules, such as distance
protection, tele-protection schemes and
overcurrent and earth fault protections,
utilize the output of the directional
elements as one of their operating
condition. All the following directional
elements cooperate with the mentioned
protection functions.
90°
0°
3 U 0_Ref
Φ0_Char
Forward
-3 I 0
Bisector
Figure 1 Characteristic of zero sequence
directional element
where:
Memory voltage directional
element
Ф0_Char: The settable characteristic angle
Negative sequence component
directional element
The IED uses the memory voltage and
fault current to determine the direction of
9
Protection
Negative sequence directional element
can make an accurate directional
discrimination in any asymmetric fault. The
directional characteristic only relates to
negative sequence impedance angle of the
negative sequence network of power
system, regardless the quantity of load
current and/or fault resistance throughout
the fault. The characteristic of the negative
sequence directional element is illustrated
in Figure 2.
3I2
X_Set
X
Forward
-n∙R_Set
R_Set
R
Reverse
90°
-n∙X_Set
Figure 3 Direction detection characteristic of
impedance directional element
0°
where:
3 U 2_ Ref
RSET: The resistance setting of relevant zone
Φ2_Char
of distance protection
XSET: The reactance setting of relevant zone
Forward
of distance protection
-3 I 2
Bisector
n: Multiplier for reverse directional element,
which make the reverse directional
Figure 2 Characteristic of negative sequence
element more sensitive than forward one
directional element
where:
Distance protection
(21, 21N)
Ф2_Char: The settable characteristic angle
Impedance directional
elements
The transmission line distance protection
provides a five zones full scheme
protection with all phase to phase faults
and phase to earth fault loops
independently for each zones. Zone
arrangement illustrated in Figure 4.
The characteristic of the impedance
directional element (shown in Figure 3) is
same with that of distance protection.
Additionally, one extension zone is
employed to co-operate with Auto-reclosing and tele-protection schemes.
10
Protection
R_ZSet: R_ZnPP or R_ZnPE;
X
Zone 5
X_ZSet: X_ZnPP or X_ZnPE;
Zone 4
Zone 3
R_ZnPP: Resistance reach setting for phase
Zone 2
to phase fault. Subscript n means the
Zone Ext.
number of protection zone. Subscript PP
Zone 1
means phase to phase fault
R
R_ZnPE: Resistance reach setting for phase
to earth fault. Subscript X means the
Zone 4 Reverse
(optional)
number of protection zone. Subscript PE
means phase to earth fault
Zone 5 Reverse
(optional)
X_ZnPP: Reactance reach setting for phase
Figure 4 Distance protection zones
to phase fault
Individual settings of resistive and reactive
reach for phase to phase and phase to
earth fault of each zone give flexibility for
application on overhead lines and cables
of different types and lengths, considering
different fault resistance for phase to
phase and phase to ground short circuits.
X_ZnPE: Reactance reach setting for phase
to earth fault
Φ_ZTop: The upper boundary angle of the
characteristic in the first quadrant is
designed to avoid distance protection
overreaching
when
a
close-in
fault
happens on the adjacent line
Characteristic of distance
protection
Φ_ZBottom: The bottom boundary angle of
the characteristic in the fourth quadrant
improves the reliability of the relay to
The IED utilizes quadrilateral characteristic
as shown in Figure 5.
operate reliably for close-in faults with arc
resistance
Φ_ZRight: The right boundary angle of
X
characteristic in the first quadrant is used
X_ZSet
to deal with load encroachment problems
Φ_ZTop
Φ_ZLeft: The left boundary angle of the
characteristic in the second quadrant
considers the line impedance angle which
generally is not larger than 90°. Thus this
Φ_ZLeft
Φ_ZRight
R_ZSet
angle guarantees the correct operation of
the relay
R
Φ_ZBottom
Extended operating
characteristic
Figure 5 Characteristics of distance protection
To ensure the correct operation at close-in
faults, a rectangle zone covering the
where:
11
Protection
original point is added to the quadrilateral
characteristic. The rectangular offset
characteristic (illustrated in Figure 6) is
calculated automatically according to the
related
distance
zones
settings.
Furthermore, the memory voltage direction
element, the zero sequence directional
element, and the negative sequence
direction element are applied to determine
the direction together.
X
-R_ZSet
R
-X_ZSet
X
Figure 7 Characteristic distance protection
XSet
reverse zone
ΦTop
Switch-onto- fault protection
function
ΦLeft
XOffset
Under either auto reclosing or manual
closing process, the protection function is
able to discriminate these conditions to
give an instantaneous tripping once the
circuit breaker is closed on permanent
faulty line.
ΦRight
ROffset
ΦBottom
R
RSet
Figure 6 Extended polygonal distance protection
Power swing (68)
zone characteristic
Reverse zone characteristic
The IED provides a high reliable power
swing detector which discriminates
between fault and power swing with
different algorithm.
In addition to the forward characteristic
zones mentioned above, the IED provides
two optional reverse zone characteristics
to protect connected busbar as a backup
protection. The reverse zone characteristic
can be set for zones 4 and 5 individually.
This reverse characteristic has been
shown in Figure 7.
Power swing blocking logic
According to the slow behavior of power
swing phenomenon, once one of the two
following conditions is met, the protection
program will switch to power swing logic
process:

12
Without operation of sudden-change
current
startup
element,
all
phase-to-phase impedances, ZAB, ZBC
Protection
and ZCA enter into the largest zone of
distance protection


Based on the experimental results and
practical proof, the change rate of
measuring resistance and the change
vector of measuring impedance are
combined to detect the three phase
fault during the power swing.
Without operation of sudden-change
current startup element, all phase
currents are bigger than the power
swing current setting
In addition, according to the experimental
results of power swing, it is not possible for
impedance vector to come into protected
zones in 150 ms after triggering of the
current sudden- -change startup element.
After 150 ms, the protection program will
be switched to power swing logic process if
no tripping is issued.
Therefore, according to the above
condition, the IED program enters the
power swing logic process and the
distance protection is blocked until
removing of the mentioned conditions or
until a fault occurrence in the protected
line.
Tele-protection
scheme for distance
protection (85-21)
To achieve non-delayed and selective
tripping on 100 % of the line length for all
faults, the communication scheme logic is
provided for distance protection. The
communication schemes are as follows:
Power swing unblocking logic
The unblocking logic provides possibility
for selective tripping of faults on
transmission
lines
during
system
oscillations, when the distance protection
function is normally blocked. In order to
unblock distance protection and therefore,
fast clearing of the faults, the following
elements are in service to discriminate
between an internal fault and power swing
conditions.

Three phase fault detection element

Permissive Overreach Transfer Trip
(POTT)

Permissive Underreach Transfer Trip
(PUTT)

Blocking scheme
Following protection logic are used to
ensure correct operation under some
special fault conditions:
Asymmetric faults detection element

Current reversal logic

Weak-infeed end and echo logic

Evolving fault logic

Sequence tripping logic
Direct Transfer Trip
The zero and negative sequence
current are always the key features of
the asymmetric fault. By comparison
amongst the positive, negative and
zero sequence component of phase
current, the element distinguishes the
asymmetric fault from power swing.
The function is provided to cooperate with
related local protection IED, such as
busbar
protection,
breaker
failure
protection, etc., to trip the opposite end
circuit breaker.
13
Protection
Phase segregated
communication scheme
Phase segregated
communication scheme
To guarantee correct phase selection at all
times for simultaneous faults on the
parallel lines, the phase segregated
communication scheme logic can be
employed to support single-pole tripping
for faults occurring anywhere at all times
on entire length of the parallel lines.
To guarantee correct phase selection at all
times for simultaneous faults on the
parallel lines, the phase segregated
communication scheme logic can be
employed to support single-pole tripping
for faults occurring anywhere at all times
on entire length of the parallel lines.
Tele-protection
scheme for earth fault
protection (85-67N)
Overcurrent protection
(50, 51, 67)
To achieve highly sensitive and selective
tripping on 100 % of the line length for all
faults, especially at the high resistance
earth faults. It always works as
complement to tele-protection for distance
protection with a short time delay.
Permissive transfer trip communication
scheme is applied.

Two definite time stages

One inverse time stage

11 kinds of IEC and ANSI inverse time
characteristic curves as well as
optional user defined characteristic

Settable
directional
element
characteristic angle, to satisfy the
different network conditions and
applications

Each stage can be set individually as
directional/non-directional

Each stage can be set individually for
inrush restraint

Cross blocking function for inrush
detection
The protection provides following features:
The protection provides dedicated current
and time elements independent of the
earth fault protection.
Following protection logic are used to
ensure correct operation under some
special fault conditions.

Current reversal logic

Weak-infeed end logic

Sequence tripping logic

Settable maximum inrush current
Direct Transfer Trip

VT secondary circuit supervision for
directional protection. Once VT failure
happens, the directional stage can be
set to be blocked
The function is provided to cooperate with
related local protection IED, such as
busbar
protection,
breaker
failure
protection, etc., to trip the remote end
circuit breaker.
Inrush restraint function
The protection relay may detect large
14
Protection
90°
Forward
magnetizing
inrush currents during
transformer energizing. In addition to
considerable
unbalance
fundamental
current, inrush current comprises large
second harmonic current which does not
appear in short circuit current. Therefore,
the inrush current may affect the protection
functions which operate based on the
fundamental component of the measured
current. Accordingly, inrush restraint logic
is provided to prevent overcurrent
protection from maloperation.
IA
Bisector
ΦPh_Char
0°
U BC_Ref
-IA
Furthermore, by recognition of the inrush
current in one phase, it is possible to set
the protection in a way that not only the
phase with the considerable inrush current,
but also the other phases of the
overcurrent protection are blocked for a
certain time. This is achieved by
cross-blocking feature integrated in the
IED.
Figure 8 Direction detection characteristic of
overcurrent protection directional element
where:
ФPh_Char: The settable characteristic angle
The assignment of the applied measuring
values used in direction determination has
been shown in Table 1 for different types of
faults.
The inrush restraint function has a
maximum inrush current setting. Once the
measuring current exceeds the setting, the
overcurrent protection will not be blocked
any longer.
Table 1 Assignment of applied current and
reference voltage for directional element
Characteristic of direction
element
The direction detection is performed by
determining the position of current vector
in directional characteristic. In other word,
it is done by comparing phase angle
between the fault current and the reference
voltage, Figure 8 illustrates the direction
detection characteristic for phase A
element.
Phase
Current
Voltage
A
Ia
U bc
B
Ib
U ca
C
Ic
U ab
For three-phase short-circuit fault, without
any healthy phase, memory voltage values
are used to determine direction clearly if
the measured voltage values are not
sufficient. The detected direction is based
on the memory voltage of previous power
cycles.
15
Protection
Earth fault protection
(50N, 51N, 67N)
Directional element
The earth fault protection adopts zero
sequence directional element which
compares the zero sequence system
quantities:
The earth fault protection can be used to
clear phase to earth faults as system
back-up protection.
The protection provides following features:

Two definite time stages

One inverse time stage

11 kinds of the IEC and ANSI inverse
time characteristic curves as well as
optional user defined characteristic

Zero sequence directional element

Negative sequence directional element
is applied as a complement to zero
sequence directional element. It can be
enabled/disabled by setting

3I0, current is measured from earth
phase CT

3U0, the voltage is used as reference
voltage. It is calculated from the sum of
the three phase voltages
3I 0
90°
0°
3U 0_Ref
Φ0_Char

Each stage can be set individually as
directional/non-directional

Settable
directional
element
characteristic angle, to satisfy the
different network conditions and
applications

Forward
Settable maximum inrush current

VT secondary circuit supervision for
directional protection function. Once
VT failure happens, the directional
stage can be set to be blocked

CT secondary circuit supervision for
earth fault protection. Once CT failure
happens, all stages will be blocked

Zero-sequence current is measured
from earth phase CT
Bisector
Figure 9 Direction detection characteristic of
zero sequence directional element
Each stage can be set individually for
inrush restraint

-3 I 0
where:
Ф0_Char: The settable characteristic angle
For earth fault protection, users can
choose negative sequence directional
element as the complement of zero
sequence directional element. It can be
used in case of too low zero sequence
voltage due to some fault condition e.g. the
unfavorable zero-sequence voltage. The
negative sequence directional element
characteristic is shown in Figure 10.
16
Protection
3I2
Emergency/backup
overcurrent protection
(50, 51)
90°
In the case of VT fail condition, all distance
zones and protection functions related with
voltage input are out of service. In this
case, an emergency overcurrent protection
comes into operation.
0°
3 U 2_ Ref
Φ2_Char
Forward
-3 I 2
Additionally, the protection can be set as
backup non directional overcurrent
protection according to the user’s
requirement.
Bisector
Figure 10 Direction detection characteristic of
The protection provides following features:
negative sequence directional element
where:

One definite time stage

One inverse time stage

11 kinds of IEC and ANSI inverse
characteristics curve as well as
optional user defined characteristic

Inrush restraint function can be set for
each stage separately

Cross blocking of inrush detection

Settable maximum inrush current
Ф2_Char: The settable characteristic angle
Furthermore, under the VT failure situation,
it can be set to block directional earth fault
protection.
Inrush restraint function
The protection relay may detect large
magnetizing
inrush currents during
transformer energizing. In addition to
considerable
unbalance
fundamental
current, Inrush current comprises large
second harmonic current which doesn’t
appear in short circuit current. Therefore,
the inrush current may affect the protection
functions which operate based on the
fundamental component of the measured
current. Accordingly, inrush restraint logic
is provided to prevent earth fault protection
from mis-tripping.
Emergency/backup
earth fault protection
(50N, 51N)
In the case of VT fail condition, all distance
zones and protection functions related with
voltage input are out of operation. An
emergency earth fault protection comes
into operation.
Since inrush current cannot be more than a
specified value, the inrush restraint
provides an upper current limit in which
blocking does not occur.
Additionally, the protection can be set as
backup non directional earth fault
protection according to the user’s
17
Protection
Overload protection
(50OL)
requirement.
The protection provides following features:

One definite time stage

One inverse time stage

11 kinds of IEC and ANSI inverse
characteristics curve as well as
optional user defined characteristic

Inrush restraint can be
individually for each stage

Settable maximum inrush current

CT secondary circuit supervision for
earth fault protection. Once CT failure
happens, all stages will be blocked

Zero-sequence current is measured
from 3-phase currents summation
The IED supervises load flow in real time.
If each phase current is greater than the
dedicated setting for a set delay time, the
protection will issue alarm.
Overvoltage protection
(59)
selected
The overvoltage protection detects
abnormally
network
high
voltage
conditions. Overvoltage conditions may
occur possibly in the power system during
abnormal conditions such as no-load,
lightly load, or open line end on long line.
The protection can be used as open line
end detector or as system voltage
supervision normally.
Switch-onto-fault
protection (50SOTF)
The protection provides following features:
The protection gives a trip when the circuit
breaker is closed manually onto a short
circuited line.

Two definite time stages

Each stage can be set to alarm or trip

Measuring voltage between phase-earth voltage and phase-phase
(selectable)

Settable dropout ratio
The protection provide following features:

One definite time overcurrent stage

One definite time earth fault protection
stage

Inrush restraint can be selected

Cross blocking for inrush detection

Settable maximum inrush current

Manual closing binary input detection
Undervoltage
protection (27)
One voltage reduction can occur in the
power system during faults or abnormal
conditions.
The protection provides following features:
18

Two definite time stages

Each stage can be set to alarm or trip
Protection

Measuring voltage between phase-earth voltage and phase-phase
selectable

Current criteria supervision

Circuit
breaker
supervision

VT secondary circuit supervision, the
Undervoltage function will be blocked
when VT failure happens

aux.
The function can be set to give single- or
three phase re-tripping of the local breaker
to avoid unnecessary tripping of
surrounding breakers in the case of the
circuit breaker with two available trip coils.
contact
Additionally, during single pole tripping,
stage 1 is able to re-tripping three phase
with settable delay time after single phase
re-tripping failure.

Two trip stages (local and surrounding
breaker tripping)

Transfer trip command to the remote
line end in second stage

Internal/ external initiation

Single/three phase CBF initiation

Selectable CB Aux contacts checking

Current criteria checking (including
phase current, zero and negative
sequence current)
Settable dropout ratio
Breaker failure
protection (50BF)
The circuit breaker failure protection is
designed to detect failure of the circuit
breaker during a fault clearance. It ensures
fast back-up tripping of surrounding
breakers by tripping relevant bus sections.
The protection can be single- or three-phase started to allow use with single or
three-phase tripping applications.
Dead zone protection
(50DZ)
Once a circuit breaker operating failure
occurs on a feeder/transformer, the bus
section which the feeder/transformer is
connected with can be selectively isolated
by the protection. In addition a transfer trip
signal is issued to trip the opposite end
circuit breaker of the feeder.
The IED provides this protection function to
protect dead zone, namely the area
between circuit breaker and CT in the case
that CB is open. Therefore, by occurrence
of a fault in dead zone, the short circuit
current is measured by protection relay
while CB auxiliary contacts indicate the CB
is open.
In the event of a circuit breaker failure with
a busbar fault, a transfer trip signal is
issued to trip the remote end circuit
breaker of the feeder.
The current criteria are in combination with
three phase current, zero and negative
sequence current to achieve a higher
security.

Internal/external initiation

Self-adaptive for bus side CT or line
side CT
When one bus side CT of feeder is applied,
once a fault occurs in the dead zone, the
IED trips the relevant busbar zone.
19
Protection
Tripping logic is illustrated in Figure 11.
STUB protection
(50STUB)
The VT is mostly installed at line side of
transmission lines. Therefore, for the cases
that transmission line is taken out of
service and the line disconnector is
opened, the distance protection will not be
able to operate and must be blocked.
Trip
Bus
IFAULT
Line1
Line2
Opened CB
The STUB protection protects the zone
between the CTs and the open dis-connector. The STUB protection is
enabled when the open position of the
disconnector is connected to IED binary
input. The function supports one definite
stage which related concept is shown in
Figure 13.
LineN
Closed CB
Figure 11 Tripping logic, applying bus side CT
When one line side CT is applied, when a
fault occurs in the dead zone, protection
relay sends a transfer trip to remote end
relay to isolate the fault. Tripping logic is
illustrated in Figure 12.
Bus A
Bus B
Delay trip
IFAULT
IFAULT
Bus
Inter trip
Line
A
Line
B
IFAULT
Closed CB
Line1
Line2
LineN
Figure 13 Tripping logic of STUB protection
Trip
Relay
Opened CB
Poles discordance
protection (50PD)
Closed CB
The phase segregated operating circuit
Figure 12 Tripping logic, applying line side CT
20
Protection
breakers can be in different positions
(close-open)
due
to
electrical
or
mechanical failures during the system
normal operation.

 Dead V4 and dead V3Ph
 Dead V4 and live V3Ph
 Live V4 and dead V3Ph
The protection operates based on
information from auxiliary contacts of the
circuit breaker with additional criteria.
Synchro-check reference
voltage supervision
The protection performs following features:

3 phase CB Aux contacts supervision

Current criteria checking (including
phase current, zero and negative
sequence current)
If the automatic reclosing is set for
synchronization check or energizing check,
during the automatic reclosing period, the
synchronization condition of the voltages
between both sides of CB cannot be met,
an alarm will be issued after default time
delay.
Synchro-check and
energizing check (25)
Auto-reclosing (79)
The synchro-check function checks the
both side voltages of the circuit breaker for
synchronism conditions.
For restoration of the normal service after a
fault an auto reclosing attempt is mostly
made for overhead lines. Experiences
show that about 85% of faults have
transient nature and will disappear after an
auto reclosing attempt is performed. This
means that the line can be re-energized in
a short period. The reconnection is
accomplished after a dead time via the
automatic reclosing function. If the fault is
permanent or short circuit arc has not been
extinguished, the protection will re-trip the
breaker.
Main
features
of
the
Auto-reclosing are as follows:
The synchronization function ensures the
stability of the network in three phase
reclosing condition. To do this, the two side
voltages of the circuit breaker are
compared in terms of magnitude, phase
angle
and
frequency
differences.
Additionally, closing can be done safely in
conditions that at least one side of the CB
has dead voltage.

Available for automatic
(internally or externally)

Based on voltage/ angle/ frequency
difference

Modes of energizing check:
reclosing

Up to 4 shots (selectable)

Individually settable dead time for three
phase and single phase fault and for
each shot

Internal/external AR initiation

Single/three phase AR operation

CB status supervision
Synchro-check modes:
 Synch-check
 Energizing check, and synch-check if
energizing check failure
 Override
21
Protection

CB Aux. contact supervision
circuit supervision

Cooperation with internal synch-check
function for reclosing command
A measured voltage failure, due to a
broken conductor or a short circuit fault in
the secondary circuit of voltage transformer,
may result in unwanted operation of the
protection functions which work based on
voltage criteria. VT failure supervision
function is provided to block these
protection functions and enable the backup
protection functions. The features of the
function are as follows:
Secondary system
supervision
Current transformer secondary
circuit supervision
Open or short circuited CT cores can
cause unwanted operation of some
protection functions such as earth fault
current and negative sequence current
functions.
Interruption of the CT secondary circuit is
detected based on zero-sequence current.
Once CT failure happens, each stage of
earth fault protection is blocked.
Voltage transformer secondary
22

Symmetrical/asymmetrical VT failure
detection

3-phase AC voltage MCB monitoring

1-phase AC voltage MCB monitoring

Zero and negative sequence current
monitoring

Applicable
in
solid
grounded,
compensated or isolated networks
Monitoring
Phase-sequence of voltage and
current supervision
and cables. Detection can initiate an alarm
or tripping.
The phase-sequence of three phase
voltage and current are monitored in the
normal condition to determine that the
secondary circuit of CT or VT is connected
with IED correctly.
Self-supervision

All modules can perform selfsupervision to its key hardware
components and program, as soon as
energizing. Parts of the modules are
self-supervised in real time. All internal
faults or abnormal conditions will
initiate an alarm. The fatal faults among
them will result in the whole IED
blocked

The sampled data from the redundant
A/D sampling channels compare with
each other in real time. If the difference
exceeds the specified threshold, it will
be considered as analog input channel
fault and the protection will be blocked
immediately

CPU module and communication
module perform real time inter-supervision. Therefore communication
interruption between them is detected
and related alarm will be given

CRC checks for the setting, program
and configuration, etc.
3I0 polarity supervision
The IED compare the magnitude and
phase angle of the calculated zero
sequence current with the measured one
to determine that the polarity is connected
in a right way.
The third harmonic of voltage
supervision
If the third harmonic voltage is excessive,
the alarm without blocking protection will
be given with delay time for checking of the
secondary circuit of voltage transformer.
Auxiliary contacts of circuit
breaker supervision
Current flowing through the transmission
line and connected CB aux. contacts are
monitored in phase segregated. Therefore,
the conflict condition is reported as alarm.
For example, If CB aux. contacts indicate
that CB is open in phase A and at the same
time flowing current is measured in this
phase, related alarm is reported.
Fault locator
The built-in fault locator is an impedance
measuring function giving the distance
from the IED measuring location to the
fault position in km. The IED reports fault
location after the IED tripping.
Broken conductor detection
The main purpose of the broken conductor
detection function is to detect the broken
conductors on protected transmission lines
23
Communication
Sifang software tool.
Station communication
RS485 communication ports
Overview
Up to 2 isolated electrical RS485
communication ports are provided to
connect with substation automation
system. These two ports can work in
parallel for IEC60870-5-103.
The IED is able to connect to one or
more substation level systems or
equipments simultaneously, through the
communication ports with communica-tion protocols supported. (Shown in
Figure 14)
Ethernet communication
ports
Front communication port
Up to 3 electrical or optical Ethernet
communication ports are provided to
connect with substation automation system.
These two out of three ports can work in
parallel for protocol, IEC61850 or
IEC60870-5-103.
There is a serial RS232 port on the front
plate of all the IEDs. Through this port,
the IED can be connected to the
personal computer for setting, testing,
and configuration using the dedicated
Server or
Work Station 1
Work Station 3
Server or
Work Station 2
Switch
Work Station 4
Net 1: IEC61850/IEC103,Ethernet Port A
Switch
Net 2: IEC61850/IEC103,Ethernet Port B
Switch
Switch
Switch
Gateway
or
converter
Switch
Gateway
or
converter
Net 4: IEC103, RS485 Port B
Net 3: IEC103, RS485 Port A
Figure 14 Connection example for multi-networks of station automation system
Note: All four ports can work in parallel
Communication protocol
that bay IEDs can exchange information to
each other directly, and a simple
master-less system can be set up for bay
and system interlocking and other
interactive function.
The IED supports station communication
with IEC 61850-8 and IED60870-5-103
protocols.
By means of IEC61850, GOOSE peer-to-peer communication make it possible
Time synchronization port
24
Communication
All IEDs feature a permanently integrated
electrical time synchronization port. It can
be used to feed timing telegrams in IRIG-B
or pulse format into the IEDs via time
synchronization receivers. The IED can
adapt the second or minute pulse in the
pulse mode automatically.
The binary signals can be exchanged
through remote communication channels
between the two IEDs on the two end of
the transmission line or cable respectively.
This functionality is mainly used for the line
Tele-protection schemes, e.g., POTT or
PUTT schemes, blocking scheme and inter
trip and so on.
Meanwhile, SNTP network time synchro-nization can be applied.
Remote communication
channel
The Figure 15 illustrates the optional time
synchronization modes.
IRIG-B
SNTP
Ethernet port
IRIG-B port
The IEDs are able to communicate with
each other in two types:

Directly fiber-optical cable connection
mode at distances up to 100 km (see
Figure 16 and Figure 17)

Through the communication converter
with G.703 or G.703E1 interface
through the public digital communica-tion network (see Figure 18 and Figure
19)
Pulse
Binary input
Figure 15 Time synchronizing modes
Remote communication
Binary signal transfer
Because there are up to two selectable
fiber-optical remote communication ports,
the IED can work in the redundant
communication channel mode, with
advantage of no time-delay channel switch
in case of the primary channel broken
(Figure 17, Figure 19 and Figure 20).
Overhead Line or Cable
Single-mode FO
Length: <60kM or
60~100kM
Channel A
IED
IED
Figure 16 Single channel, communication through dedicated fiber optical cable
25
Communication
Overhead Line or Cable
Single-mode FO
Length: <60kM or
60~100kM
Channel A
Channel B
IED
IED
Figure 17 Double channels, communication through dedicated fiber optical cable
connectors to the protection IED. The
converter can be set to support an
electrical G703-64 kbit/s or G703-E1
2Mbit/s interface, according the require-ment of the multiplexed communication
network.
Communication converter
The link between the IED and a
multiplexed communication network is
made by dedicated communication
converters (CSC186). They have a
fiber-optic interface with 1310 nm and 2 FC
Overhead Line or Cable
G703.5(E1: 2048kbit/s)
G703.1(64kbit/s)
o
e
IED
Digital
communication
network
e
o
Communication
converter
Communication
converter
IED
Figure 18 Single Channel, communication through digital communication network
26
Communication
Overhead Line or Cable
G703.5(E1: 2048kbit/s)
G703.1(64kbit/s)
Channel A
Digital
communication
network
o
e
o
e
IED
Communication
converter
Digital
communication
network
e
o
e
o
Communication
converter
IED
Channel B
Figure 19 Double channels, communication through digital communication network
Overhead Line or Cable
Single-mode FO
Length: <60kM or
60~100kM
Channel A
o
IED
e
Digital
communication
network
e
o
IED
Channel B
G703.5(E1: 2048kbit/s), G703.1(64kbit/s)
Figure 20 Double channels, one channel through digital communication network, one channel
through dedicated fiber optical cables
27
Software tools
A user-friendly software tool is offered for
engineering, setting, disturbance analysis
and monitoring. It provides versatile
functionalities required throughout the life
cycle of protection IEDs. Its features are as
follows:



diagrams, vector diagrams, bar charts
and data sheet.
Device administration in projects with
freely configurable hierarchies for any
substation and electrical power station
topology
Modification, import and export of
parameter sets sorted by protection
functions, with setting logicality check
Precise fault analysis with visualization
of fault records in curves, circle
28

Intelligent plausibility checks rule out
incorrect input

Graphical visualization of charac-teristics and zone diagrams with direct
manipulation of the curves

Password-protected
access
for
different jobs such as parameter setting,
commissioning
and
controlling
(authorized staff only)

Testing and diagnostic functions
–decisive support in the commissioning
phase
Hardware
Front plate
The whole front plate is divided into
zones, each of them with a well-defined
functionality:
5
1
4
CSC-101
2
3
6
8
7
Figure 21 Front plate
1
Liquid crystal display (LCD)
5
Reset key
2
LEDs
6
Quit key
3
Shortcut function keys
7
Set key
4
Arrow keys
8
RS232 communication port
Rear plate
Test port
X11
For BIM and BOM
X10
X9
X8
X7
Ethernet ports
X6
X5
PSM
X4
X3
COM
CPU2
Figure 22 Rear plate of the protection IED
29
Fiber Optical
ports
X2
CPU1
X1
AIM
Hardware
optical Ethernet ports and up to 2 channels
RS485 serial communication ports can be
provided in communication module to meet
the communication demands of different
substation automation system and RTU at
the same time.
Modules
Analogue Input Module (AIM)
The analogue input module is used to
galvanically separate and transform the
secondary
currents
and
voltages
generated by the measuring transformers.
The time synchronization port is equipped,
which can work in pulse mode or IRIG-B
mode. SNTP mode can be applied through
communication port.
CPU Module (CPU)
The CPU module handles all protection
functions and logic. There are two CPU
modules in the IED, CPU1 and CPU2, with
the same software and hardware. They
work in parallel and interlock each other to
prevent maloperation due to the internal
faults of one CPU modules.
In addition, a series printer port is also
reserved.
Binary Input Module (BIM)
The binary input module is used to connect
the input signals and alarm signals such as
the auxiliary contacts of the circuit breaker
(CB), etc.
Moreover, the redundant A/D sampling
channels are equipped. By comparing the
data from redundant sampling channels,
any sampling data errors and the channel
hardware faults can be detected
immediately and the proper alarm and
blocking is initiated in time.
Binary Output Module (BOM)
The binary output modules mainly provide
tripping output contacts, initiating output
contacts and signaling output contacts. All
the tripping output relays have contacts
with a high switching capacity and are
blocked by protection startup elements.
Communication Module (COM)
The communication module performs
communication between the internal
protection system and external equipments
such as HMI, engineering workstation,
substation automation system, RTU, etc.,
to transmit remote metering, remote
signaling, SOE, event reports and record
data.
Each output relay can be configured to
satisfy the demands of users.
Power Supply Module (PSM)
The power supply module is used to
provide the correct internal voltages and
full isolation between the terminal and the
battery system.
Up to 3 channels isolated electrical or
30
Hardware
Dimension
E
C
A
D
B
Figure 23 4U, 19” case with rear cover
Table 2 Dimension of the IED case
Legend
A
B
C
D
E
Dimension (mm)
177
482.6
265
320
437.2
D
C
E
A
B
Figure 24 Cut-out on the panel
Table 3 Dimension of the cutout for IED mounting
Legend
A
B
C
D
E
Dimension (mm)
450
465
101.6
178
6.5
31
Connection
A. Typical rear terminal diagram
X5
X1
a01
b01
a02
b02
a03
b03
a04
b04
a05
b05
a06
b06
a07
b07
a08
b08
a09
b09
a10
b10
a11
b11
a12
b12
BI01
BI02
BI03
BI04
BI05
BI06
BI07
BI08
BI09
BI10
BI11
BI12
BI13
BI14
BI15
BI16
BI17
BI18
BI19
BI20
BI21
BI22
BI23
BI24
BI25
BI26
BI27
BI28
BI29
BI30
BI-COM1(-)
BI-COM2(-)
CSC-101
IA
IB
IC
I0
I4
Null
Null
Null
Null
Null
Null
Null
Null
U4
UB
UC
UA
UN
X2
1)
RX connector of optical fiber port 1
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
TX connector of optical fiber port 1
X6
RX connector of optical fiber port 2
Output relay 01
Output relay 02
TX connector of optical fiber port 2
Output relay 03
Output relay 04
X4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Output relay 05
Null
Null
Null
Null
RS485 - 2B
RS485 - 2A
RS485 - 1B
RS485 - 1A
GPS
GPS - GND
Null
Null
Null
Null
Null
Null
Output relay 06
Output relay 07
Output relay 08
Output relay 09
Output relay 10
Output relay 11
Output relay 12
Output relay 13
2)
Ethernet Port 1 - RJ45
Ethernet Port 2 - RJ45
Output relay 14
Output relay 15
Output relay 16
32
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
Note:
1) The two optical fiber ports are
optional for protection remote
communication
2) Alternative Ethernet ports for
station communication are 2 ST
optical fiber ports, shown as
following,
Ethernet Port 1 - ST
Ethernet Port 2 - ST
Connection
CSC-101
X7
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
X9
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
Output relay 01
Output relay 01
Output relay 02
Output relay 02
Output relay 03
Output relay 04
Output relay 03
Output relay 05
Output relay 07
Output relay 04
Output relay 05
Output relay 06
Output relay 07
Output relay 08
Output relay 08
Output relay 09
Output relay 09
Output relay 10
Output relay 10
Output relay 11
Output relay 11
Output relay 12
Output relay 12
Output relay 13
Output relay 13
Output relay 14
Output relay 14
Output relay 15
Output relay 15
Output relay 16
Output relay 16
Output relay 06
X10
X8
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
1)
Output relay 01
Output relay 02
Output relay 03
Output relay 04
Output relay 05
Output relay 06
Output relay 07
Output relay 08
Output relay 09
Output relay 10
Output relay 11
Output relay 12
Output relay 13
Output relay 14
Output relay 15
Output relay 16
33
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
Note :
1) X10 is optional terminal
set, for additional binary
output module ordered by
user.
Connection
CSC-101
X11
DC 24V + output
Null
Null
DC 24V - output
Power failure alarm relay 1
Power failure alarm relay 2
Null
Null
AUX DC + input
Null
Null
AUX DC - input
Null
Null
Terminal for earthing
Terminal for earthing
34
a02
c02
a04
c04
a06
c06
a08
c08
a10
c10
a12
c12
a14
c14
a16
c16
a18
c18
a20
c20
a22
c22
a24
c24
a26
c26
a28
c28
a30
c30
a32
c32
Connection
B. Typical analogue inputs connection for one breaker of single
or double busbar arrangement
A
B
C
Protection IED
a01
b01
IA
a02
b02
*
*
*
IB
a03
b03
IC
a04
b04
a12
a11
b11
b12
IN
UA
UB
UC
UN
a10
b10
35
U4
Connection
C. Typical analogue inputs connection for one and half breaker
arrangement
A
B
C
*
*
*
*
*
*
Protection IED
a01
b01
IA
a02
b02
IB
a03
b03
IC
a04
b04
a12
a11
b11
b12
IN
UA
UB
UC
UN
a10
b10
A
B
C
36
U4
Connection
D. Typical analogue inputs connection for parallel lines
A
B
C
Protection IED
a01
b01
IA
a02
b02
*
*
*
IB
*
a03
b03
IC
a04
b04
a12
a11
b11
b12
IN
UA
UB
UC
UN
a10
b10
U4
a05
b05
37
INM
*
*
Technical data
Frequency
Item
Standard
Rated system frequency
IEC 60255-1
Data
50 Hz or 60Hz
Internal current transformer
Item
Standard
Rated current Ir
IEC 60255-1
Data
1 or 5 A
Nominal current range
0.05 Ir to 30 Ir
Nominal current range of sensitive
0.005 to 1 A
CT
≤ 0.1 VA at Ir = 1 A;
Power consumption (per phase)
≤ 0.5 VA at Ir = 5 A
≤ 0.5 VA for sensitive CT
Thermal overload capability
IEC 60255-1
100 Ir for 1 s
IEC 60255-27
4 Ir continuous
Internal voltage transformer
Item
Standard
Rated voltage Vr (ph-ph)
IEC 60255-1
Data
100 V /110 V
Nominal range (ph-e)
0.4 V to 120 V
Power consumption at Vr = 110 V
IEC 60255-27
≤ 0.1 VA per phase
DL/T 478-2001
Thermal
overload
capability
(phase-neutral voltage)
IEC 60255-27
2 Vr, for 10s
DL/T 478-2001
1.5 Vr, continuous
Auxiliary voltage
Item
Standard
Data
Rated auxiliary voltage Uaux
IEC60255-1
110 to 250V
Permissible tolerance
IEC60255-1
±%20 Uaux
Power consumption at quiescent
IEC60255-1
≤ 50 W per power supply module
IEC60255-1
≤ 60 W per power supply module
state
Power consumption at maximum
load
38
Technical data
Inrush Current
T ≤ 10 ms/I≤ 25 A per power supply
IEC60255-1
module,
Binary inputs
Item
Input voltage range
Standard
IEC60255-1
Data
110/125 V
220/250 V
Threshold1: guarantee
IEC60255-1
154V, for 220/250V
operation
77V, for 110V/125V
Threshold2: uncertain operation
IEC60255-1
132V, for 220/250V
;
66V, for 110V/125V
Response time/reset time
IEC60255-1
Software
provides
de-bounce
time
Power consumption, energized
IEC60255-1
Max. 0.5 W/input, 110V
Max. 1 W/input, 220V
Binary outputs
Item
Standard
Data
Max. system voltage
IEC60255-1
250V
/~
Current carrying capacity
IEC60255-1
5 A continuous,
30A，200ms ON, 15s OFF
Making capacity
IEC60255-1
1100 W(
) at inductive load with
L/R>40 ms
1000 VA(AC)
Breaking capacity
Mechanical endurance, Unloaded
IEC60255-1
IEC60255-1
220V
, 0.15A, at L/R≤40 ms
110V
, 0.30A, at L/R≤40 ms
50,000,000 cycles (3 Hz switching
frequency)
Mechanical endurance, making
IEC60255-1
≥1000 cycles
Mechanical endurance, breaking
IEC60255-1
≥1000 cycles
Specification state verification
IEC60255-1
UL/CSA、TŰV
IEC60255-23
IEC61810-1
39
Technical data
Contact circuit resistance
IEC60255-1
measurement
IEC60255-23
30mΩ
IEC61810-1
Open Contact insulation test (AC
IEC60255-1
Dielectric strength)
IEC60255-27
Maximum temperature of parts and
IEC60255-1
AC1000V 1min
55℃
materials
Front communication port
Item
Data
Number
1
Connection
Isolated, RS232; front panel,
9-pin subminiature connector, for software tools
Communication speed
9600 baud
Max. length of communication cable
15 m
RS485 communication port
Item
Data
Number
0 to 2
Connection
2-wire connector
Rear port in communication module
Max. length of communication cable
1.0 km
Test voltage
500 V AC against earth
For IEC 60870-5-103 protocol
Communication speed
Factory setting 9600 baud,
Min. 1200 baud, Max. 19200 baud
Ethernet communication port
Item
Data
Electrical communication port
Number
0 to 3
Connection
RJ45 connector
Rear port in communication module
Max. length of communication cable
100m
For IEC 61850 protocol
40
Technical data
Communication speed
100 Mbit/s
For IEC 60870-5-103 protocol
Communication speed
100 Mbit/s
Optical communication port ( optional )
Number
0 to 2
Connection
SC connector
Rear port in communication module
Optical cable type
Multi-mode
Max. length of communication cable
2.0km
IEC 61850 protocol
Communication speed
100 Mbit/s
IEC 60870-5-103 protocol
Communication speed
100 Mbit/s
Time synchronization
Item
Data
Mode
Pulse mode
IRIG-B signal format
IRIG-B000
Connection
2-wire connector
Rear port in communication module
Voltage levels
differential input
Fiber optic communication ports for remote communication
Item
Data
Number
1 to 2
Fiber optic cable type
Single-mode
Optic wavelength
1310nm, when the transmission distance <60km;
1550nm, when the transmission distance >60km
Optic received sensitivity
-38dBm
Emitter electric level
>-8dBm; (the transmission distance <40km)
>-4dBm; (the transmission distance 40～60km)
>-3dBm; (the transmission distance >60km)
Fiber optic connector type
FC, when the transmission distance <60km)
SC, when the transmission distance >60km
Data transmission rate
64 kbit/s, G703;
2,048 kbit/s, G703-E1
Max. transmission distance
100kM
41
Technical data
Environmental influence
Item
Recommended permanent operating temperature
Data
-10 °C to +55°C
(Legibility of display may be impaired above
+55 °C /+131 °F)
Storage and transport temperature limit
-25°C to +70°C
Permissible humidity
95 % of relative humidity
IED design
Item
Data
Case size
4U×19inch
Weight
≤ 10kg
42
Technical Data
Product safety-related Tests
Item
Standard
Data
Over voltage category
IEC60255-27
Category III
Pollution degree
IEC60255-27
Degree 2
Insulation
IEC60255-27
Basic insulation
Degree of protection (IP)
IEC60255-27
Front plate: IP40
IEC 60529
Rear, side, top and bottom: IP 30
IEC 60255-5
2KV, 50Hz
EN 60255-5
2.8kV
ANSI C37.90
between the following circuits:
GB/T 15145-2001
 auxiliary power supply
DL/T 478-2001
 CT / VT inputs
Power
frequency
withstand test
high
voltage
 binary inputs
 binary outputs
 case earth
500V, 50Hz
between the following circuits:
 Communication ports to case
earth
 time synchronization terminals
to case earth
Impulse voltage test
IEC60255-5
5kV (1.2/50μs, 0.5J)
IEC 60255-27
If Ui≥63V
EN 60255-5
1kV if Ui<63V
ANSI C37.90
Tested between the following
GB/T 15145-2001
circuits:
DL/T 478-2001
 auxiliary power supply
 CT / VT inputs
 binary inputs
 binary outputs
 case earth
Note: Ui: Rated voltage
Insulation resistance
IEC60255-5
IEC 60255-27
EN 60255-5
ANSI C37.90
GB/T 15145-2001
43
≥ 100 MΩ at 500 V
Technical Data
DL/T 478-2001
Protective bonding resistance
IEC60255-27
≤ 0.1Ω
Fire withstand/flammability
IEC60255-27
Class V2
Electromagnetic immunity tests
Item
1 MHz burst immunity test
Standard
Data
IEC60255-22-1
Class III
IEC60255-26
2.5 kV CM ; 1 kV DM
IEC61000-4-18
Tested on the following circuits:
EN 60255-22-1
 auxiliary power supply
ANSI/IEEE C37.90.1
 CT / VT inputs
 binary inputs
 binary outputs
1 kV CM ; 0 kV DM
Tested on the following circuits:
 communication ports
Electrostatic discharge
IEC 60255-22-2
Level 4
IEC 61000-4-2
8 kV contact discharge;
EN 60255-22-2
15 kV air gap discharge;
both polarities; 150 pF; Ri = 330 Ω
Radiated electromagnetic field
IEC 60255-22-3
Frequency sweep:
disturbance test
EN 60255-22-3
80 MHz – 1 GHz; 1.4 GHz – 2.7 GHz
spot frequencies:
80 MHz; 160 MHz; 380 MHz; 450
MHz; 900 MHz; 1850 MHz; 2150
MHz
10 V/m
AM, 80%, 1 kHz
Radiated electromagnetic field
IEC 60255-22-3
Pulse-modulated
disturbance test
EN 60255-22-3
10 V/m, 900 MHz; repetition rate
200 Hz, on duration 50 %
Electric fast transient/burst immunity
IEC 60255-22-4,
Class A, 4KV
test
IEC 61000-4-4
Tested on the following circuits:
EN 60255-22-4
 auxiliary power supply
ANSI/IEEE C37.90.1
 CT / VT inputs
 binary inputs
 binary outputs
44
Technical Data
Class A, 1KV
Tested on the following circuits:
 communication ports
Surge immunity test
IEC 60255-22-5
4.0kV L-E
IEC 61000-4-5
2.0kV L-L
Tested on the following circuits:
 auxiliary power supply
 CT / VT inputs
 binary inputs
 binary outputs
500V L-E
Tested on the following circuits:
 communication ports
Conduct immunity test
IEC 60255-22-6
Frequency sweep: 150 kHz – 80
IEC 61000-4-6
MHz
spot frequencies: 27 MHz and 68
MHz
10 V
AM, 80%, 1 kHz
Power frequency immunity test
IEC60255-22-7
Class A
300 V CM
150 V DM
Power frequency magnetic field test
IEC 61000-4-8
Level 4
30 A/m cont. / 300 A/m 1 s to 3 s
100 kHz burst immunity test
IEC61000-4-18
2.5 kV CM ; 1 kV DM
Tested on the following circuits:
 auxiliary power supply
 CT / VT inputs
 binary inputs
 binary outputs
1 kV CM ; 0 kV DM
Tested on the following circuits:
 communication ports
DC voltage interruption test
Item
DC voltage dips
Standard
IEC 60255-11
45
Data
100% reduction 20 ms
Technical Data
60% reduction 200 ms
30% reduction 500 ms
DC voltage interruptions
IEC 60255-11
100% reduction 5 s
DC voltage ripple
IEC 60255-11
15%, twice rated frequency
DC voltage gradual shut–down
IEC 60255-11
60 s shut down ramp
/start-up
5 min power off
60 s start-up ramp
DC voltage reverse polarity
IEC 60255-11
1 min
Electromagnetic emission test
Item
Standard
Radiated emission
Data
IEC60255-25
30MHz to 1GHz ( IT device may up
EN60255-25
to 5 GHz)
CISPR22
Conducted emission
IEC60255-25
0.15MHz to 30MHz
EN60255-25
CISPR22
Mechanical tests
Item
Sinusoidal
Vibration
Standard
response
test
Data
IEC60255-21-1
Class 1
EN 60255-21-1
10 Hz to 60 Hz: 0.075 mm
60 Hz to 150 Hz: 1 g
1 sweep cycle in each axis
Relay energized
Sinusoidal Vibration endurance
IEC60255-21-1
Class 1
test
EN 60255-21-1
10 Hz to 150 Hz: 1 g
20 sweep cycle in each axis
Relay non-energized
Shock response test
IEC60255-21-2
Class 1
EN 60255-21-2
5 g, 11 ms duration
3 shocks in both directions of 3 axes
Relay energized
Shock withstand test
IEC60255-21-2
Class 1
EN 60255-21-2
15 g, 11 ms duration
3 shocks in both directions of 3 axes
46
Technical Data
Relay non-energized
Bump test
IEC60255-21-2
Class 1
10 g, 16 ms duration
1000 shocks in both directions of 3
axes
Relay non-energized
Seismic test
IEC60255-21-3
Class 1
X-axis 1 Hz to 8/9 Hz: 7.5 mm
X-axis 8/9 Hz to 35 Hz :2 g
Y-axis 1 Hz to 8/9 Hz: 3.75 mm
Y-axis 8/9 Hz to 35 Hz :1 g
1 sweep cycle in each axis,
Relay energized
Climatic tests
Item
Standard
Cold test - Operation
IEC60255-27
Data
-10°C, 16 hours, rated load
IEC60068-2-1
Cold test – Storage
IEC60255-27 IEC60068-2-1
-25°C, 16 hours
Dry heat test – Operation
[IEC60255-27
+55°C, 16 hours, rated load
IEC60068-2-2
Dry heat test – Storage
IEC60255-27
+70°C, 16 hours
IEC60068-2-2
Change of temperature
Damp heat static test
IEC60255-27
Test Nb, figure 2, 5 cycles
IEC60068-2-14
-10°C / +55°C
IEC60255-27
+40°C, 93% r.h. 10 days, rated load
IEC60068-2-78
Damp heat cyclic test
IEC60255-27
+55°C, 93% r.h. 6 cycles, rated load
IEC60068-2-30
CE Certificate
Item
EMC Directive
Low voltage directive
Data
EN 61000-6-2 and EN61000-6-4 (EMC Council
Directive 2004/108/EC)
EN 60255-27 (Low-voltage directive 2006/95 EC).
47
Technical Data
Functions
NOTE:
Ir: CT rated secondary current, 1A or 5A;
Distance protection (ANSI 21, 21N)
Item
Number of settable zone
Rang or Value
5
zones ， with
Tolerance
additional
extended zone
Distance characteristic
Polygonal
Resistance setting range
0.01Ω～120Ω, step 0.01Ω, when
≤± 5.0% static accuracy
Ir=5A;
Conditions:
0.05Ω～600Ω, step 0.01Ω, when
Voltage range: 0.01 Ur to 1.2 Ur
Current range: 0.12 Ir to 20 Ir
Ir=1A;
Reactance setting range
0.01Ω～120Ω, step 0.01Ω, when
Ir=5A;
0.05Ω～600Ω, step 0.01Ω, when
Ir=1A;
Time delay of distance zones
0.00 to 60.00s, step 0.01s
≤±1% or +20 ms, at 70%
operating setting and setting
time > 60ms
Operation time
22ms typically at 70% setting of
zone 1
Dynamic overreaching for zone 1
≤±5%, at 0.5<SIR<30
Tele-protection (ANSI 85 – 21, 21N, 67N)
Item
Operating time
Rang or Value
Tolerance
25ms typically in permission
mode for 21/21N, at 70% setting
Overcurrent protection (ANSI 50, 51, 67)
Item
Rang or Value
Tolerance
Definite time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00 to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at 200%
operating setting
48
Technical Data
Inverse time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
IEC standard
Normal inverse;
≤ ±5% setting + 40ms, at 2
Very inverse;
<I/ISETTING < 20, in accordance
Extremely inverse;
with IEC60255-151
Long inverse
ANSI
Inverse;
≤ ±5% setting + 40ms, at 2
Short inverse;
<I/ISETTING < 20, in
Long inverse;
accordance with ANSI/IEEE
C37.112,
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
user-defined characteristic
≤ ±5% setting + 40ms, at 2
T=
<I/ISETTING < 20, in accordance
with IEC60255-151
Time factor of inverse time, A
0.005 to 200.0s, step 0.001s
Delay of inverse time, B
0.000 to 60.00s, step 0.01s
Index of inverse time, P
0.005 to 10.00, step 0.005
set time Multiplier for step n: k
0.05 to 999.0, step 0.01
Minimum operating time
20ms
Maximum operating time
100s
Reset mode
instantaneous
Directional element
Operating area range
Characteristic angle
≤ ±3°, at phase to phase
voltage >1V
0°to 90°, step 1°
Earth fault protection (ANSI 50N, 51N, 67N)
Item
Rang or value
Tolerance
Definite time characteristic
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00 to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at 200%
operating setting
Inverse time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
IEC standard
Normal inverse;
IEC60255-151
Very inverse;
≤ ±5% setting + 40ms, at 2
Extremely inverse;
<I/ISETTING < 20
49
Technical Data
Long inverse
ANSI
Inverse;
ANSI/IEEE C37.112,
Short inverse;
≤ ±5% setting + 40ms, at 2
Long inverse;
<I/ISETTING < 20
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
user-defined characteristic
IEC60255-151
T=
≤ ±5% setting + 40ms, at 2
<I/ISETTING < 20
Time factor of inverse time, A
0.005 to 200.0s, step
0.001s
Delay of inverse time, B
0.000 to 60.00s, step 0.01s
Index of inverse time, P
0.005 to 10.00, step 0.005
set time Multiplier for step n: k
0.05 to 999.0, step 0.01
Minimum operating time
20ms
Maximum operating time
100s
Reset mode
instantaneous
Directional element
≤ ±3°, at 3U0≥1V
Operating area range of zero
sequence directional element
Characteristic angle
0°to 90°, step 1°
≤ ±3°, at 3U2≥2V
Operating area range of negative
sequence directional element
Characteristic angle
50°to 90°, step 1°
Emergency/backup overcurrent protection (ANSI 50, 51)
Item
Rang or Value
Tolerance
Definite time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00 to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at 200%
operating setting
Inverse time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
IEC standard
Normal inverse;
≤ ±5% setting + 40ms, at 2
Very inverse;
<I/ISETTING < 20, in accordance
Extremely inverse;
with IEC60255-151
Long inverse
50
Technical Data
ANSI
Inverse;
≤ ±5% setting + 40ms, at 2
Short inverse;
<I/ISETTING < 20, in
Long inverse;
accordance with ANSI/IEEE
Moderately inverse;
C37.112,
Very inverse;
Extremely inverse;
Definite inverse
user-defined characteristic
≤ ±5% setting + 40ms, at 2
T=
<I/ISETTING < 20, in accordance
with IEC60255-151
Time factor of inverse time, A
0.005 to 200.0s, step 0.001s
Delay of inverse time, B
0.000 to 60.00s, step 0.01s
Index of inverse time, P
0.005 to 10.00, step 0.005
set time Multiplier for step n: k
0.05 to 999.0, step 0.01
Minimum operating time
20ms
Maximum operating time
100s
Reset mode
instantaneous
Emergency/backup earth fault protection (ANSI 50N, 51N)
Item
Rang or value
Tolerance
Definite time characteristic
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00 to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at 200%
operating setting
Inverse time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
IEC standard
Normal inverse;
≤ ±5% setting + 40ms, at 2
Very inverse;
<I/ISETTING < 20, in accordance with
Extremely inverse;
IEC60255-151
Long inverse
ANSI
Inverse;
≤ ±5% setting + 40ms, at 2
Short inverse;
<I/ISETTING < 20, in accordance
Long inverse;
with ANSI/IEEE C37.112,
Moderately inverse;
Very inverse;
Extremely inverse;
Definite inverse
user-defined characteristic
≤ ±5% setting + 40ms, at 2
T=
<I/ISETTING < 20, in accordance with
51
Technical Data
IEC60255-151
Time factor of inverse time, A
0.005
to
200.0s,
step
0.001s
Delay of inverse time, B
0.000 to 60.00s, step 0.01s
Index of inverse time, P
0.005 to 10.00, step 0.005
set time Multiplier for step n: k
0.05 to 999.0, step 0.01
Minimum operating time
20ms
Maximum operating time
100s
Reset mode
instantaneous
Inrush restraint function
Item
Upper function limit
Range or value
0.25 Ir to 20.00 Ir
Tolerance
≤ ±3% setting value or ±0.02Ir
Max current for inrush restraint
Ratio of 2
nd
harmonic current to
0.10 to 0.45, step 0.01
fundamental component current
Cross-block (IL1, IL2, IL3)
0.00s to 60.00 s, step 0.01s
≤ ±1% setting or +40ms
(settable time)
Switch-onto-fault protection (ANSI 50SOTF)
Item
Rang or Value
Tolerance
Phase current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Zero-sequence current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay of phase overcurrent
0.00s to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at
200% operating setting
Time delay of zero sequence
0.00s to 60.00s, step 0.01s
current
≤ ±1% setting or +40ms, at
200% operating setting
Breaker failure protection (ANSI 50 BF)
Item
Rang or Value
Tolerance
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay of stage 1
0.00s to 32.00 s, step 0.01s
≤ ±1% setting or +25 ms, at
Time delay of stage 2
0.00s to 32.00 s, step 0.01s
200% operating setting
phase current
Negative sequence current
zero sequence current
52
Technical Data
Reset time of stage 1
< 20ms
Dead zone protection (ANSI 50DZ)
Item
Rang or Value
Tolerance
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00s to 32.00s, step 0.01s
≤ ±1% setting or +40 ms, at
200% operating setting
Pole discordance protection (ANSI 50PD)
Item
Rang or Value
Tolerance
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00s to 60.00s, step 0.01s
≤ ±1% setting or +40 ms, at
200% operating setting
STUB protection (ANSI 50STUB)
Item
Rang or Value
Tolerance
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00s to 60.00s, step 0.01s
≤ ±1% setting or +40 ms, at
200% operating setting
Undervoltage protection (ANSI 27)
Item
Voltage connection
Rang or Value
Phase-to-phase voltages or
Tolerance
≤ ±3 % setting or ±1 V
phase-to-earth voltages
Phase to earth voltage
5 to 75 V , step 1 V
≤ ±3 % setting or ±1 V
Phase to phase voltage
10 to 150 V, step 1 V
≤ ±3 % setting or ±1 V
Reset ratio
1.01 to 2.00, step 0.01
≤ ±3 % setting
Time delay
0.00 to 120.00 s, step 0.01 s
≤ ±1 % setting or +50 ms, at 80%
operating setting
Current criteria
0.08 to 2.00 Ir
Reset time
≤ 50 ms
≤ ±3% setting or ±0.02Ir
53
Technical Data
Overvoltage protection (ANSI 59)
Item
Rang or Value
Voltage connection
Phase-to-phase voltages or
Tolerance
≤ ±3 % setting or ±1 V
phase-to-earth voltages
Phase to earth voltage
40 to 100 V, step 1 V
≤ ±3 % setting or ±1 V
Phase to phase voltage
80 to 200 V, step 1 V
≤ ±3 % setting or ±1 V
Reset ratio
0.90 to 0.99, step 0.01
≤ ±3 % setting
Time delay
0.00 to 60.00 s, step 0.01s
≤ ±1 % setting or +50 ms, at
120% operating setting
Reset time
<40ms
Synchro-check and voltage check (ANSI 25)
Item
Rang or Value
Tolerance
Synchronization check:
Operating mode

Synch-check

Energizing check, and
synch-check if energizing
check failure

Override
Energizing check:

Dead V4 and dead V3Ph

Dead V4 and live V3Ph

Live V4 and dead V3Ph
Voltage threshold of dead line or
10 to 50 V (phase to earth), step
bus
1V
Voltage threshold of live line or
30 to 65 V (phase to earth), step
bus
1V
∆V-measurement
Voltage
difference
Δf-measurement
1 to 40 V (phase-to-earth), steps
≤ ± 3 % setting or 1 V
≤ ± 3 % setting or 1 V
≤ ± 1V
1V
(f2>f1; f2<f1)
Δα-measurement (α2>α1;
0.02 to 2.00 Hz, step, 0.01 Hz,
≤ ± 20 mHz
1 °to 80 °, step, 1 °
≤ ± 3°
0.05 to 60.00 s, step,0.01 s,
≤ ± 1.5 % setting value or +60
α2<α1)
Minimum measuring time
ms
Maximum synch-check
0.05 to 60.00 s, step,0.01 s,
extension time
54
≤ ± 1 % setting value or +50 ms
Technical Data
Auto-Reclosing (ANSI 79)
Item
Number of reclosing shots
Rang or Value
Tolerance
Up to 4
Shot 1 to 4 is individually
selectable
AR initiating functions
Internal protection functions
External binary input
Dead time, separated setting for
0.05 s to 60.00 s, step 0.01 s
≤ ± 1 % setting value or +50 ms
shots 1 to 4
Reclaim time
0.50 s to 60.00s, step 0.01 s
Blocking duration time (AR reset
0.05 s to 60.00s, step 0.01 s
time)
Circuit breaker ready supervision
0.50 s to 60.00 s, step 0.01 s
time
Dead time extension for
0.05 s to 60.00 s, step 0.01 s
synch-check (Max. SYNT EXT)
VT secondary circuit supervision (97FF)
Item
Range or value
Tolerances
Minimum current
0.08Ir to 0.20Ir, step 0.01A
≤ ±3% setting or ±0.02Ir
Minimum zero or negative
0.08Ir to 0.20Ir, step 0.01A
≤ ±5% setting or ±0.02Ir
Maximum phase to earth voltage
7.0V to 20.0V, step 0.01V
≤ ±3% setting or ±1 V
Maximum phase to phase
10.0V to 30.0V, step 0.01V
≤ ±3% setting or ±1 V
40.0V to 65.0V, step 0.01V
≤ ±3% setting or ±1 V
sequence current
voltage
Normal phase to earth voltage
55
Ordering
Pre-configure schemes
Pre-configure scheme
M01
M02
Full function
single busbar
Double or
Application
arrangement
M03
breaker
arrangement
Distance protection (21, 21N)
1
1
1
Power-swing function (68)
1
1
1
1
1
1
1
1
1
(1)
(1)
(1)
Communication scheme for distance protection
(85–21,21N)
Communication scheme for earth fault protection
(85–67N)
Phase segregated scheme communication logic
Overcurrent protection (50, 51, 67)
1
Earth fault protection (50N, 51N, 67N)
1
1
1
Emergency/backup overcurrent protection (50, 51)
1
1
1
Emergency/backup earth fault protection (50N, 51N)
1
1
1
Switch-onto-fault protection (50SOTF)
1
1
1
Overload protection (50OL)
1
1
1
Overvoltage protection (59)
1
1
1
Undervoltage protection (27)
1
1
1
Breaker failure protection (50BF)
1
Dead zone protection (50DZ)
1
STUB protection (50STUB)
1
Poles discordance protection (50PD)
1
1
Synchro-check and energizing check (25)
1
1
Auto-reclosing (79)
1
1
Single and/or three pole tripping (94)
1
1
1
CT secondary circuit supervision
1
1
1
VT secondary circuit supervision (97FF)
1
1
1
Analogue input module (5I + 4U)
1
1
1
CPU modules
2
2
2
1
1
1
1
1
1
2
2
2
2
2
2
1
1
Communication module(with Ethernet interfaces,
RS485 interfaces and time synchronizing interface)
Binary input module (30 BI)
Binary output modules (16 relays for tripping and
initiation)
Binary output modules (16 relays for signal)
56
Ordering
Power supply module
1
1
1
Programmable LEDs
18
18
18
Case, 4U,19”
1
1
1
Note:
n : Quantity of standard function or standard hardware, n= 1, 2, ….;
(n) : Quantity of optional function or optional hardware, n= 1, 2, ….;
57
Ordering
Ordering code
No.1~16
C S C 1 0 1 -
No.17~37
L
F
T
Pre-configure scheme
Pre-configure scheme code
M
Pre-configure scheme number 1
0~9
Pre-configure scheme number 2
0~9
HMI Language (L) note
English
1
Russian
2
French
Portuguese
3
Spanish
5
4
Rated Frequency (F)
50 Hz
5
60 Hz
6
Station Communication Protocols (T)
Ethernet interface:IEC61850-8; RS485 interface: IEC60870-5-103
1
Ethernet interface:IEC60870-5-103; RS485 interface: IEC60870-5-103
2
Note: Chinese is always offered as default HMI language.
58
Ordering
No.17~23
No.1~16
C S C 1 0 1 -
A
M
No.24~37
C
Slot 1
Analogue Input Module (A)
5I (1A)+4U
5
5I (5A)+4U
6
Slot 2
CPU Module 1 (M)
without FDDI
4
1 FDDI, 2Mbps, single mode, SC type, transmission distance <40 kM
5
1 FDDI, 2Mbps, single mode, SC type, transmission distance 40~60kM
6
1 FDDI, 2Mbps, single mode, SC type, transmission distance 60~100kM
7
2 FDDIs, 2Mbps, SC type, Channel A: transmission distance 40~60 kM;
Channel B: transmission distance <40 kM
8
2 FDDIs, 2Mbps, SC type, Channel A: transmission distance 60~100 kM;
Channel B: transmission distance <40 kM
9
2 FDDIs, 2Mbps, SC type, Channel A: transmission distance <40 kM;
Channel B: transmission distance <40 kM
e
2 FDDIs, 2Mbps, SC type, Channel A: transmission distance 60~100 kM;
Channel B: transmission distance 60~100 kM
f
Slot 3
CPU Module 2 (M)
without FDDI
4
Slot 4
Communication module (C)
3 electrical Ethernet ports, 1 RS485 ports, IRIG-B
1
3 electrical Ethernet ports, 1 RS485 ports, Pulse
2 electrical Ethernet ports, 2 RS485 ports, IRIG-B
2
2 electrical Ethernet ports, 2 RS485 ports, Pulse
2 optical Ethernet ports, 2 RS485 ports, IRIG-B
4
5
2 optical Ethernet ports, 2 RS485 ports, Pulse
6
3
59
Ordering
No.24~31
No.1~23
C S C 1 0 1 -
I
No.32~37
O
Slot 5
Binary Input Module (I)
30BI (220V DC), with startup blocking relay
1
30BI (110V DC), with startup blocking relay
2
Slot 6
Binary Output Module (O)
16 relays for tripping
1
Slot 7
Binary Output Module (O)
16 relays for tripping
1
16 relays (with 19 contacts) for signalling
3
Null
x
Slot 8
Binary Output Module (O)
16 relays for tripping
1
16 relays (with 19 contacts) for signalling
3
Null
x
Slot 9
Binary Output Module (O)
16 relays for tripping
1
16 relays (with 19 contacts) for signalling
3
Null
x
Slot 10
Binary Output Module (O)
16 relays for tripping
1
16 relays (with 19 contacts) for signalling
3
Null
x
60
Ordering
No.1~31
C S C 1 0 1 -
No.32~37
P
K
Z
Slot 11
Power Supply Module (P)
1
110V - 250V DC
Case and Front Plate (K)
Case: 4U, 19'
Front plate: Medium size LCD; 20 LEDs
3
Accessories (Z)
Null
x
61
Address: No.9 Shangdi 4th Street, Haidian District,
Beijing, P.R.C. 100085
Tel: +86 10 62962554, +86 10 62961515 ext.8998
Fax: +86 10 82783625
Email:sf_sales@sf-auto.com
Website: http://www.sf-auto.com