ST266F Intelligent General Protection and measurement
device
Operation Instruction
Wenzhou Boerstn Electric Co., Ltd
Preface
Please read this chapter carefully before using this product!
This chapter introduces the safety precautions before using this product. Please
make sure the content of this chapter is fully read and understood before installation and
usage. Our company will not undertake any responsibilities for any damage or injury
caused by improper operations because of ignoring relevant warnings in this operation
instruction.
Before operating this device, relevant professional personnel shall read this
instruction carefully and well understand the content.
Operation instructions and warnings:
The following standard definitions will be adopted in this operation
instruction.。
Danger! Ignoring of safety precautions may cause personal death, serious
personal injury or serious equipment damage.
Warning! Ignoring of safety precautions may cause personal death, serious
personal injury or serious equipment damage.
Caution! Ignoring of safety precautions may cause a slight personal injury or
equipment damage, especially the damage of device or the equipment
protected by the device.
 Danger!
When the primary system is live working, secondary open circuit for the current
transformer connected to the device is absolutely forbidden, and the open of this
circuit may cause extremely dangerous high voltage.
 Warning!
Some parts of the device may have high voltage when the electrical device is running.
Improper operation may cause serious personal injury or equipment damage.。
Only qualified professional personnel are allowed to operate the device or work
nearby the device. The operators shall well understand the precautions, working
flows and safety regulations mentioned in this instruction.
Special attention: General working regulations for high voltage live equipment shall
be abided; otherwise it may cause serious personal injury and equipment damage.
 Caution!
Grounding terminals of the device shall be firmly grounded.
The device is only permitted to run in atmospheric environment that specified in
the technical specifications, and abnormal vibrations shall be avoided in its running
environment.
When connect the AC voltage current circuit or power circuit, please make sure
they conform to the rated parameters of the device.
When the output terminals of the device are connected to external circuit, please
check carefully the voltage of external power to prevent overheating of the circuit.
Carefully check the cable connected to the device, preventing applying too
much external force on it.
Content
1.Introduction of the Device .................................................................................................. 1
1.1 Application scope ································································································1
1.2 Function feature。 ·······························································································1
2. Technical Performance Indexes......................................................................................... 3
2.1 Conditions of Working Environment ··········································································3
2.2 Electrical technical parameters ·················································································3
2.3 Insulation property ·······························································································5
2.4 Electromagnetism immunity property ·········································································7
2.5 Mechanical property ·····························································································7
2.6 Protection grade ··································································································7
3. Model Selection instuction ................................................................................................. 8
4. Function configuration....................................................................................................... 9
4.1 The surge current blocking function ···········································································9
4.2 Three –steps inter-phase overcurrent protection ·····························································9
4.3 Two-section zero-sequence(grounding) current protection ················································11
4.4 over-voltage protection ·························································································11
4.5 Low voltage protection ·························································································11
4.6 Multipule reclosing ·····························································································11
4.7 Post-acceleration later ··························································································12
4.8 Over –load protection ···························································································12
4.9 PT wire-breakage alarm ························································································12
4.10 The intellegence switching input ············································································13
4.11 Signal inditactor ································································································14
4.12 Event record ····································································································14
5. Structure Installation and Connection............................................................................ 15
5.1 Structure and Installation ·······················································································15
5.2 Connection ·······································································································18
6. Setting of parameters ....................................................................................................... 19
6.1 System Parameters ······························································································19
6.2 Fixed value parameters ·························································································20
7. Operation of Man-machine Interface ............................................................................. 25
Operation instruction of ST266F Intelligent general protection and measurement control Device
1.Introduction of the Device
1.1 Application scope
ST266Fintelligent general protection device is developed for application of ring
power grid. It contains function such as three-section inter-phase over current protection、
inverse time limited over current protection with several curve action characteristics、
two-section zero-sequence over current （earth grounding） protection 、many times
reclosing、over voltage、low voltage protection and intelligent switching input, and
monitoring function includes electric-quantity measurement、remote control、remote
signals and so on.
1.2 Function feature。
ST266F intellectual protect device adopts high integrating micro processor with bus in
the chip to process the signals both from the voltage and current transformers, and output
these signals through digital logical operation control. The device sdopts seal case,
maintenance-free design, sound anti-interference performance, and it specially suits for
ring power grid running in worse environment and with limited installation position.
 Low power consumption design technology is adopted for the whole machine,
to ensure the protection functions can start quickly reliably at any conditions.
 The structure of the device is simple and smart, easy and flexible to install,
suiting for the compact installation conditions of ring network system.
 The functions of this device includs:three-section inter-phase over current
protection,two-section zero-sequence (earth grounding )current protection, a variety
inverse curve options of IEC standard,and votage protection.
 With surge current blocking function, to prevent incorrect tripping due to
transformer no-load switching.
 Instantaneous trip protection uses a fast algorithm of Short Data Window, to
ensure rapid removal of short-circuit fault to avoid override trip.
 Protection configuration is flexible and compelete , all protection functions
can freely switch on or switch off through control figure.
 The device has perfect measuring and controlling functions , and may
measure electrical parameters such as voltage、current、active power、reactive power、
apparent power、power factor and so on; provides special remote control relays to
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Operation instruction of ST266F Intelligent general protection and measurement control Device
realize remote control function; owns seven switching input circuit with customized
pre-define function.
 Chinese LED display interface and multi-layer menu display is adopted,there
are chinese menu or english menu optional, time alarming window design,with frendly
human-machine interface.
 With automatic-dynamic-gain current measurement circuit design, the device
has an extremely wide measuring range, so as to meet the transformers of secondary
rated1A or 5A current.
 50Hz, 60Hz system is customizable by the user; the mode of zero-sequence
collection is optional (external connection or internal algorithms).
 With a very wide operating temperature range and waterproof and dustproof
design, it ensures reliable operations under extreme conditions.
 The device can record at least 60 times of historical events record, and no data
will lose even the power is off,it is convenient to accidents recall.
 The device provides RS-485 communication bus interface and provides open
communication protocols to clients, so as to realize SCADA function.
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Operation instruction of ST266F Intelligent general protection and measurement control Device
1.3 Series Device List
ST266F intelligent general protection and measurement control device is one model
among our ST26x RMU special protection device series. The Series Device List is shown
as table below.
Device
Model
ST260E
ST260M
ST268N
ST266B
ST266F
Device Name
Device Function
Device Features
Intelligent
Three-sect
inter-phase
overcurrent
(self-powered) protection,
two-sect
zero-sequence
LCD graphic display interface
passive
overcurrent protection, gas (temperature)
protection device protection
Intelligent
Three-sect
inter-phase
overcurrent
(self-powered) protection,
one-sect
zero-sequence Rotate the coding switch to set
passive
overcurrent protection, gas (temperature) the value; very wide range of
protection device protection
temperature adaptation
Intelligent
Two-sect
inter-phase
overcurrent Rotate the coding switch to set
(self-powered) protection,
one-sect
zero-sequence the value; very wide range of
passive
overcurrent protection, gas (temperature) temperature adaptation; slim
protection device protection
modular structure
Spare
power
automatic
switching, Spare power automatic
Intelligent spare three-sect inter-phase overcurrent, two-sect switching protection device;
power automatic zero sequence overcurrent, voltage monitoring and control
switching
protection, gas (temperature) protection, function with lead-in
protection device monitoring and control functions, etc.
line protection; LCD graphic
display interface
Intelligent
Three-sect
inter-phase
overcurrent, Active protection device;
integrated
two-sect
zero-sequence
overcurrent, multifunctional protection and
protection
multiple reclosing, voltage protection, control
functions;
LCD
monitoring and intelligent switch input, monitoring and graphic display interface
control device control functions
2. Technical Performance Indexes
2.1 Conditions of Working Environment
2.1.1 Environment temperature: Working temperature -20°C
- 60°C
Reservation temperature -40°C
2.1.2
Relative humidity:
5%
2.1.3
Atmospheric pressure: 70 KPa
2.1.4
Altitude:
- 85°C
- 95%
- 110KPa
Less than or equal to 4000 m
2.2 Electrical technical parameters
2.2.1Rated data:
AC voltage：100V or 220V (indicate the order)
AC current：5A / 1A(General)
Frequency: 50Hz/60Hz(General)
DC220(110)V，±20%
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Operation instruction of ST266F Intelligent general protection and measurement control Device
DC48V，±20%
DC24V，±20%
Power:
AC220(110)V，±20%
DC220(110)V，±20%
DC48V，±20%
DC24V，±20%
2.2.2Overload ability:
voltage circuit: long-time running-------1.5Un
current circuit:
long-time running-------10A
10s-----------------50A
1s------------------100A
2.2.3Power consumption: The source power shall not be greater than 5W.
Each of AC input circuit power shall not be greater than0.5VA.
2.2.4Measuring scope:
Voltage
0.01Un -- 2Un
Phase Current:
0.05A
Zero sequence current:
0.005A - 5A
2.2.5 Measuring precision：Voltage
- 50A
<1% or no larger than 0.01A
Phase current :
<1% or no larger than 0.01A
Zero sequence current :<1% or no larger than 0.01A
2.2.6 Scope of protection：The range of protection current: 0.1A
—50A
2.2.7 Operate time of protection:
The national actuation time of quick-break protection under 2 times fixed value is not
larger than 20ms.
The national actuation time of all protection under 1.5 times fixed value is not larger than
35ms.
2.2.8Input circuit:
External power supply, type of voltage is customized ; current consumption is 2mA
2.2.9Output circuit:
DC220V, 5A current can pass the contact point continuously.
2.2.10Communication interface: panel communication intrface, special debugging interface
The terminal interface --RS-485interface
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Operation instruction of ST266F Intelligent general protection and measurement control Device
2.3 Insulation property
2.3.1
Insulation resistance
No.
Test Position
1
Test requirements
Remark
AC current to the ground
Between the AC circuit and
2
Measure with
3
power circuit
Insulation
Power circuit to the ground
resistance>100mego
Switching value input
4
distant-reading
hm
manometer
circuit to the ground
5
1000V
Output circuit to the ground
Between switching value
6
2.3.2
input and output circuit
Dielectric strength
Test
No.
Test position
Test condition
requirements
1
Power circuit to the ground
Under normal
Communication circuit to
test atmospheric
2
the ground
conditions, carry out
Non-breakdo
3
AC circuit to the ground
1 minute power
Between AC circuit and
frequency
wn flashover and
damage status of
4
anti-voltage test
power circuit
components
under specific
Switching value input
5
voltage, wherein 2
circuit to the ground
6
tests are under
Output circuit to the ground
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Operation instruction of ST266F Intelligent general protection and measurement control Device
1000V，others are
under 2000V）, the
other circuits shall
connect each other
Between switching value
7
to the ground with
input and output circuit
equal electric
potential，when
applying voltage to
the tested voltage.
2.3.3
Impulse voltage
Test
No.
Test
Test position
conditions
1
AC circuit to the ground
Under normal test
Between AC circuit and
atmosphere
requirements
2
conditions, the
power circuit
3
Power circuit to the ground
device undertakes
Non-breakdo
Switching value input
1.2/50us standard
wn flashover,
lightning short
insulation damage
time impulse
and component
voltage test,
damage
4
circuit to the ground
5
Output circuit to the ground
switching value
Between switching value
6
output test voltage
input and output circuit
is 5KV.
2.3.4Anti-humidity and anti-heat property
The device shall be able to bear the permanent humidity and heat test specified in GB/T
2423.9. Test temperature: +40℃±2℃; relative humidity: （93±3）%; test period: 48h.
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Operation instruction of ST266F Intelligent general protection and measurement control Device
According to the requirements in 2.3.1, 2 hours before the termination of the test, the
insulation between each circuit shall be measured and the resistance shall not be less than
1.5 MΩ；the anti-voltage strength of the dielectric shall not be lower than 75% of the
dielectric strength test voltage amplitude specified in 2.3.2.
2.4 Electromagnetism immunity property
2.4.1
Electrostatic discharge immunity
Pass the standard of GB/T 17626.2-1998 and the test for electrostatic discharge
immunity Grade 4.
2.4.2
Radiated radio frequency electromagnetic field immunity
Pass the standard of GB/T 17626.3-1998 and the test for radiated radio frequency
electromagnetic field immunity Grade 4.
2.4.3
Electrical fast transient/burst (EFT/B) immunity
Pass the standard of GB/T 17626.4-1998 and the test for electrical fast transient/burst
(EFT/B) immunity Grade 4.
2.4.4
Surge immunity
Pass the standard of GB/T 17626.5-1998 and the test for surge immunity Grade 4.
2.5 Mechanical property
2.5.1 Vibration
Pass the Grade I vibration response test specified in Section 16.2 of GB/T 7261.
2.5.2 Impulse
Pass the Grade I impulse response test specified in Section 17.4 of GB/T 7261.
2.5.3 Impact
Pass the Grade I impact response test specified in Chapter 18 of GB/T 7261.
2.6 Protection grade
IP54
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Operation instruction of ST266F Intelligent general protection and measurement control Device
3. Model Selection instuction
ST
266F
XX
xx
X
X
S
ele
cti
on
of
Selection of installation direction:
L —vertical installation
H —horizontal installation
Selection of terminal mode:
B —The back extraction
cT
External input contact power
selection:
A1 — External power, AC220V
A2 — External power, AC110V
D1 — External power, DC220V
D2 — External power, DC110V
D3 — External power, DC48V
D4 — External power, DC24V
The device power selection:
A1 — External power, AC220V
A2 — External power, AC110V
D1 — External power, DC220V
D2 — External power, DC110V
D3 — External power, DC48V
D4 — External power, DC24V
Products series code
Company code
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Operation instruction of ST266F Intelligent general protection and measurement control Device
4. Function configuration
4.1 The surge current blocking function
If the function is put into use, the line is running detected by device, When the
secondary harmonic content of the line exceeds 15% current of the fundamental, it will
lock the protection trip output. If the lines without transformer load, the function will sends
no action.
4.2 Three –steps inter-phase overcurrent protection
The functions of three- section inter-phase overcurrent protection for devices are
respectively quick-break protection、time-limited quick-break protection、overcurrent
protection. Both the quick-break protection and time limited quick-break protection are
defined time limited characteristics; The over current protection can provides four types of
curves as: Definite curve、Normally Inverse Curve, Very Inverse Curve, and Extremely
Inverse Curve. The time-current formulas for the last three curves are as following:
Normally Inverse Curve:
Very Inverse Curve:
Extremely Inverse Curve
Wherein:
t
-
Tripping time
tI〉
-
Times
I
-
Fault current
Is
-
Current setting
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Operation instruction of ST266F Intelligent general protection and measurement control Device
Please see Fig. 4.2, Fig.4.3 and Fig. 4.4 for these three types of inverse time action
curves.
Fig. 4.1 Operating characteristics of definite time-lag
Fig. 4.3 Operating characteristics of very inverse curve
Fig. 4.2
Operating characteristics of normally inverse time-lag
Fig. 4.4 Operating characteristics of extremely inverse curve
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Operation instruction of ST266F Intelligent general protection and measurement control Device
4.3 Three-section zero-sequence(grounding) current protection
The device set three-section definite time limited zro-sequence protection detecting
the earth grounding current.,and it is mainly used for the neutrol point insulation or
compensation system.The first is definite time limited characteristic ,the second and the
third includes four types performance curve：Definite Curve、Normally Inverse Curve、
Very Inverse Curve、Very Inverse Curve.
The mode of zero-sequence collection can be selected to access to pecial
zero-sequence CT or internal calculation of device.（“zero-sequence mode” can be choosen
in system menu）
Because the zero sequence current in the indirect grounding system is relatively small,
the relatively higher detection precision is necessory for the zero-sequence collected by
device, generally,the connection way is advised to adopt instaling special zero-sequence
CT.
4.4 over-voltage protection
The device check Uab、Ubc、Uca , when anyone of the three linevoltage is larger than
set value,after the set delaying,it output tripping order, turn on the tripping signal indicate.
Protection can select switch on or switch off respectively, also,current and time value can
be set respectively.
4.5 Low voltage protection
The device check Uab、Ubc、Uca , when the three line-voltage are eighty percentage
greater rated line-voltage and after keeping two seconds,the device is judged running
normal; at the moment ,if the three line-voltage are lower than set voltage, after .set time
value delaying , the device output corresponding order. This protection can select trip
directly or only alam no tripping.
4.6 Multipule reclosing
The device has reclosing function up to four times. When Over voltage protection、
low-voltage protection、zero-sequence protection trip, the device can block reclosing
function. The motion logic of reclosing simulate to the way of traditional capacitor
charging and discharging. The reclosing charging conditions as followings:
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Operation instruction of ST266F Intelligent general protection and measurement control Device
1、Switching on the soft link of reclosing；
2、No external contact blocking reclosing；
3、Circuit- breaker closing position.
The above conditions have realized for 15seconds, the reclosing finishes charging.
The device will discharge immediately if any of the conditions is not met or device
receives remote order.
After power charging of function reclose is finished, when the position of Circuit
Breaker changed from closed to opening,
the device immediately start function of
reclosing ,then the device output tripping order with time delaying.
There are two methods to start the function of reclosing in the software of device,
protection starting mode (which is described above) is default in device, if it is necessary,
the non-corresponding way which is other method ,can be set via connect to after-sale
officer to modify the hidden menu.
4.7 Post-acceleration later
When the post-acceleration protection switched on, the device should judge whether
the fault of line is disappeared after reclosing, if the fault meet three- section phase current
protection tripping, and the acceleration time less than three-section phase protection
motion time, the device will start the set time delay of acceleration in two seconds.
4.8 Over –load protection
The three-phase current collected by devices,comparad to the set value of over-load
current, when the current is larger than the set value ,the device will send out alarm signal.
4.9 PT wire-breakage alarm
The collection voltage of the device is line-voltage. The device judges whether
voltage circuit wired-breakage or not automatically, the criterion is as following:
i. No action signal of inter-phase over current protection ；
ii. Each of phase current is larger than 0.2A, each of line-voltage is less than 2V;
As soon as both above conditions are met that the PT is wired-breakage, if it is true,
the device will sent alarm signal after 5 seconds time delay.
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Operation instruction of ST266F Intelligent general protection and measurement control Device
4.10 The intellegence switching input
The device is designed seven switching input loops supplied by external power, the
power source voltage shown in order can be customized h by users. Generally, without any
special instruction, the power is similar to the device power voltage. The device take
measurement enough to remove jitter in both the hardware and software, without special
requirement the device can distinguish 10ms width impulse, with resolution accuracy of
1ms.
The intelligence characteristics of switching input are include two sides ：
1 、The name of each the switching input can be defined by user-self，the user can
input the names in the “system” menu in order to keep the displaying names are similar to
the real collecting contact name, the types of input signal are as followings：
 the normal switching input signal
 the circuit- breaker closing position signal
 the circuit-breaker open position signal
 the isolation switch closing position signal
 the isolation switch open position signal
 the grounding switch closing position signal
 the grounding switch open position signal
 the carrier work position signal
 the carrier test position signal
 the spring stored signal
 the spring un stored signal
 the transformer door open signal
 the heavy gas signal
 the light gas signal
 the over-temperature signal
 the high-temperature signal
 the pressure release signal
 blocking reclosing signal
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Operation instruction of ST266F Intelligent general protection and measurement control Device
 blocking back-up switching signal
 remote control signal
2、loops are pre-defined, the protection device software will automatically scan the
position of each input status signal, which will involve in the analysis of relevant protection
logic based on the definition e.g. reclose, backup power auto input, which renders the
secondary design of protection device more flexible and meets the need for contingent
adjustment of wiring out of certain cause on site.
3、According to the set parameters above，the device detects whether alarming signal
input, if the device detect signal input such as “heavy gas”、“over-temperature” or
“pressure release” ,then the device will output tripping order and alarm information
automatically.
4.11 Signal inditactor
There are two signal indicators on the device panel, i.e. "RUN" (green) and "TRIP"
(red).
The indicator "RUN" (green) has three flicker frequencies: 5 rapid flashings per
second (5Hz) indicate that a internal fault needs to be repaired; 2 normal speed flashings
per second (2Hz) indicate that the device is running properly; 2 slow flashings per second
(0.5Hz) indicate that the protection function is under the exit status.
Indicator "TRIP" (red) lighting up indicates that trip output will appear.
4.12 Event record
The device can record a total of 100 historical events. Records include overcurrent
protection actions, switch quantity input displacement, equipment failures and other types
of events,
Event records are stored by the order of occurrence time. When there are more than 60
events, the latest records will automatically overwrite the oldest records sequentially.
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Operation instruction of ST266F Intelligent general protection and measurement control Device
5. Structure Installation and Connection
5.1 Structure and Installation
5.1.1 Panel Layout
Fig. 5.1 Diagram of the panel
5.1.2. External dimension and installation
ST266F protection device has a structure with uniform dimention,it has one terminal
outlet way(back outlet way(B- type))and two intallation directions(vertical (L-type)、
horizontal(H-type).The horizoncal(H-type) installation direction is 90°counter clock wise
to vertical direction. All diagrams in the chapter are shown vertical (L-type) installation
dimensional diagram of device.
The following gives introductions respectively according to the different terminal
outlet methods. All the dimensions units are in millimeter (mm).
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Operation instruction of ST266F Intelligent general protection and measurement control Device
5.1.2.1Back terminal outlet (B-type) method
2.5 6.5
74
110
22
142 137
Figure5.3 right-side view diagram（B-type）
Figure 5.2 front view diagram（B-type）
68
70
136
138
Figure5.4Back view diagram （B-type）
Figure 5.5 opening dimension chart of L-type embedded switch cabinet（B-type）
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Operation instruction of ST266F Intelligent general protection and measurement control Device
M4 installation screw hole
M4 安装螺孔
32
图 5.6 底面视图（B 型）
77
Figure 5.6 button view diagram (B-type)
Allow screwing depth no longer than 6mm
允许拧入深度≤6mm
33
Figure 5.7 Installation method suggested diagram (B-type)
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Operation instruction of ST266F Intelligent general protection and measurement control Device
5.2 Connection
Fig 5.8 Terminal wiring diagram
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Operation instruction of ST266F Intelligent general protection and measurement control Device
6. Setting of parameters
Three types of parameters of the device shall be set, namely system parameters; fixed
value parameters and channel parameters. The three types of parameters shall be
respectively set correspongding to the System, Fixed Value and Calibration menus. For the
setting of channel parameters is the compensation to the AC channel of the hardware, it is
finished setting before shipped with no introduction here. The following introduct
respectively setting of system parameters and fixed value parameters.
6.1 System Parameters
Before formally put into operation, the system parameters shall be correctly input to
ensure the normal operating of the device. The system parameters chart as following:
No. Parameter name
Parameter introduction
Setting score
1
Equipment
language
The language of the Human-machine is set in
Chinese/English
device.
2
Rated frequency
The rated frequency of device AC quantity is set
50Hz/60Hz
in device.
3
Open time
To set the time of breaker.
4
The rated value of
To set the secondary rated value of PT
PT secondary side
0~9999V
5
The rated value of
To set the primary rated value of PT
PT primary side
0~99.99KV
6
Ratio of CT
Setting the ratio of current in device.
0~9999
7
Zero-sequence
mode
Zero-sequence current collection mode.
External input/internal arithmetic
8
Ratio
of
Setting the ratio of zero-sequence CT in device
zero-sequence CT
9
Data display mode
10 DI filtering
0~9999
Setting the data display mode of human-machine
Secondary value/original value
“RUN” menu in device.
To set the time of Binary filtering in device.
0~9999ms
11
Communication
protocol
To set the communication protocol of RS485 in
Modbus/IEC101/IEC103/IEC104
device.
12
Communication
address
Rs485 communication bus address
0~254
13
Communication
baud rate
Rs485 communication bus baud rate
1200/2400/4800/9600/14400/19200bps
The check mode of RS485communication
None/odd/even
14 Check mode
15
Display contrast
To set contrast value of the human-machine
interface LCD screen, for the contrast will 0~9
change as the environment changed, through
19
Operation instruction of ST266F Intelligent general protection and measurement control Device
adjusting this value to gain the best result.
16
Operation
word
pass
When the authorization menu is entered from the
human-machine interface in device, password 0000~9999
must be input.
17 S1 define
To define the type of switch S1 input.
18 S2 define
To define the type of switch S2 input.
19 S3 define
To define the type of switch S3 input.
20 S4 define
To define the type of switch S4 input.
21 S5 define
To define the type of switch S5 input.
22 S6 define
To define the type of switch S6 input.
23 S7 define
To define the type of switch S7 input.
24 Equipment date
To set the data of system clock in device.
25 Equipment time
To set the time of system clock in device
26 Software Version To set the software version of the device
To see section 4.9
V1.0021
Note:
1、Both the “phase CT ratio” and “zero-sequence CT ratio” are value of the ratio, for
example，for the CT ratio 500A/5A,set value is 500/5=100;
2、”The mode of data display” is only valuable to “run” men, under the other menus
(includes “value”、“record”、“calibration”) of the device, the data appear in secondary
value.
3、Switch inherent action time: The time scope is from tripping coil of Circuit breaker
energized by the power until the Circuit breaker tripping contact is trigged to close. The
real action time of protection device is that the value of set time reduces the inherent time
of circuit breaker. The default value of circuit breaker inherent time is 50ms.
6.2 Fixed value parameters
Fixed value parameters include all controlling parameters of protection function,
please set correctly according to the introduction in Section 4
20
Operation instruction of ST266F Intelligent general protection and measurement control Device
Name of Fixed
No.
Protection
Explanation to setting
Value
1
2
3
Surge current
blocking on/off
Short for(Inrush)
Value of Surge current
blocking
Short for(Value)
Inter-Phase
current quick-break
on/off
Short for(I>)
function
Fixed value of soft strap, options:“Switch On”
and “Switch Off”.
Fixed value of current, setting scope: 0~50A
Fixed value of soft strap, options:“On and
“Off”.
4
Inter-Phase
current quick-break
current
Short for(Current)
5
Inter-Phase
current quick-break
time
Short for(Delay)
6
Inter-Phase
current
time-limited
quick
break on/off
Short for(I>>)
7
Inter-Phase
current time-limited
quick break current
Short for(Current)
Fixed value of current, setting scope: 0~50A
8
Inter-Phase
current time-limited
quick break time
Short for(Delay)
Fixed value of time, setting scope: 0s~600s
9
Curve options of
Inter-Phase over
current
Short for(I>>>)
10
Inter-Phase
over-current current
Short for(Current)
11
Inter-Phase
over-current time
Short for(Delay)
Surge current
blocking
Fixed value of current, setting scope: 0~50A
Fixed value of time, setting scope: 0s~600s
Inter-phase
quick-break
Fixed value of soft strap, options:“On” and
“Off”.
Curve set value selection, optional:, “definite
curve” 、 “Normal inverse curve”, “Very
inverse curve”, “Extremely inverse curve”
，
“Cut Off”.
Fixed value of current, setting scope: 0~50A
Fixed value of time, setting scope: 0s~600s
21
Inter-Phase
current
time-limited
quick break
Inter-Phase
over-current
protection
Operation instruction of ST266F Intelligent general protection and measurement control Device
12
Inter-phase
over-current protection
time multiple
Short
for(Timemul)
Time multiple set value, setting scope:
0.05~20
13
Zero sequence
over-current 1 section
current switch
on/switch off
Short for(I0>)
Fixed value of soft strap, options:“On” and
“Off”.
14
Zero-sequence current
control
Short for(Outstyle)
15
Zero sequence
over-current 1 section
current
Short for(Current)
16
Zero sequence
over-current 1 section
time
Short for(Delay)
17
Zero-sequence
over-current 2 section
curve option
Short for(I0>>)
To select set value Curve, options:,
“definite curve” 、 “Normal inverse curve”,
“Very inverse curve”, “Extremely inverse
curve”
，“Cut Off”.
18
Zero-sequence current
control
Short for(Outstyle)
Fixed value of control，options:”alarm” 、
“trip”.
19
Zero
sequence
over-current 2 section
current
Short for(Current)
Fixed value of current, setting scope: 0~5A
20
Zero sequence
over-current 2 section
time
Short for(Delay)
21
Zero-sequence
over-current 3 section
curve option
Short for(I0>>>)
To select set value Curve, options:,
“definite curve” 、 “Normal inverse curve”,
“Very inverse curve”, “Extremely inverse
curve”
，“Cut Off”.
22
Zero-sequence current
control
Short for(Outstyle)
Fixed value of control ， options:”alarm” 、
“trip”.
Fixed value of control，options:“alarm”
、
“trip”.
Zero-sequence
over-current
1section
Fixed value of current, setting scope: 0~5A
Fixed value of time, setting scope: 0s~600s.
Zero-sequence
over-current 2
section
Fixed value of time, setting scope: 0s~600s.
22
Zero-sequence
over-current 3
section
Operation instruction of ST266F Intelligent general protection and measurement control Device
23
Zero sequence
over-current 3 section
current
Short for(Current)
24
Zero sequence
over-current 3 section
time
Short for(Delay)
25
Inter-phase
over-current protection
time multiple
Short for(Timemul)
Time multiple set value, setting scope:
0.05~20
26
Over-voltage
protection switch on
/switch off
Short for(Over vol)
Fixed value of soft strap,options: “On” and
“Off”.
27
Over-voltage
protection voltage
Short for(Voltage)
Fixed value of voltage, setting scope:
0~20xUn.
28
Over-voltage
protection time
Short for(Delay)
29
low-voltage
protection switch on
/switch off
Short for(Under vol)
Fixed value of current, setting scope: 0~5A
Fixed value of time, setting scope: 0s~600s.
Over-voltag
e protection
Fixed value of time, setting scope: 0s~600s.
Fixed value of soft strap,options: “On” and
“Off”.
30
Low-voltage protection
control
Short for(Outstyle)
31
Low-voltage
protection voltage
Short for(Voltage)
32
Low-voltage
protection time
Short for(Delay)
33
Time
multiple
of
reclose
Short
for(Reclose
times)
Setting score: 0~4, 0 stands for function
reclose switch off.
34
The fist time of reclose
Short for(delay1st)
Fixed value of time, setting scope: 0s~600s.
35
The second time of
reclose
Short for(delay2nd)
Fixed value of control ， options:”alarm” 、
“trip”.
Low-voltag
e protection
Fixed value of voltage, setting scope:
0~20xUn.
Fixed value of time, setting scope: 0s~600s.
Fixed value of time, setting scope: 0s~600s.
23
Reclose
protection
Operation instruction of ST266F Intelligent general protection and measurement control Device
36
The third time of
reclose
Short for(delay3rd)
Fixed value of time, setting scope: 0s~600s.
37
The forth time of
reclose
Short for(delay4th)
Fixed value of time, setting scope: 0s~600s.
38
Post-acceleration
protection switch on
/switch off
Short for(Accafter)
Fixed value of soft strap,options: “On” and
“Off”.
39
Post-acceleration
protection time
Short for(delay)
40
Over-load protection
switch on /switch off
Short for(Overload)
Fixed value of soft strap,options: “On” and
“Off”.
41
Over-load protection
current
Short for(current)
Fixed value of current, setting scope: 0~50A.
42
Over-load protection
time
Short for(delay)
Fixed value of time, setting scope: 0s~600s.
43
PT wired-breakage
switch on /switch off
Short for(PT line)
Fixed value of soft strap,options: “On” and
“Off”.
Post-accele
ration protection
Fixed value of time, setting scope: 0s~600s
24
Over-load
protection
PT
wire-breakage
Operation instruction of ST266F Intelligent general protection and measurement control Device
7. Operation of Man-machine Interface
The device owns two operation modes for man-machine interface: one is operation from the device,
composed of signal indicators, small touch button board, large LCD screen Chinese; the other operation
mode is to realize man-machine operation through background debugging assistant software.
Man-machine operation from the device is introduced in this section.
A 2*2 small touch button board is provided on the bottom of the panel, which has four
buttons, namely “ENT” (Confirmation, Exit), “↑/+” (move the cursor upward /plus one),
“↓/-” (move the cursor downward /minus one), “→” (move the cursor rightward). “ENT” is
used for entering the submenu or returning to the main menu; “↑/+” is used for moving the
cursor one step upward or plus one during modification of the parameter; “↓/-” is used to
move the cursor one step downward or minus one when modifying the parameters; “→” is
used to move the cursor rightward.
On the button of left panel, there is a round key that pressed to start the device
debugging state, using high energy battery self-carried by the device, user can do these
operation as checking , setting and so on. If the key do not press in 20 seconds, the device
will cut off the power.
The LCD screen cabinets adopt for the displaying mode with layering menus
including five main menus: MONITOR、SYSTEM、VALUE、EVENT、CALIBRITION.
The following are respectively introduction of different menus.
7.1 Monitor menu
When the device is normally connected to the power, the LCD
screen will enter the run menu automatically. Both the real-time
Ia
301.5A
Ib
monitoring AC quantities and switching input quantities of device are
displayed on the sixth row in front of the screen. If one of the switch
define is switch position or energy stored state signal in system menu,
the corresponding signal icon will show in the first row of LCD
screen. As shown in fig.7.1, the display data refresh every one second
automatically in the LCD screen. This screen has two pages of screen
25
284.3A
Ic:
321.8A
：
Figure 7.1 monitor menu
Operation instruction of ST266F Intelligent general protection and measurement control Device
to display, and every 10 seconds, screen will turn automatically from
one to another page, also, can turn over manually with “↑/+” and
“↓/-” keys.
7..2 Main menu
Pressing the “ENT” key can enter main menu from run menu.
Main menu
The main menu picture is shown as Fig 7.1.
The main menu contain five parts as: run, system, value,
calibration, and event. Via “↑/+”、“↓/-”keys to choose the menu need
Monitor
system
value
event
calibration
to enter, black color cursor position color is anti-black. Pressing the
“ENT key can enter sub menu of cursor position.
output
Figure 7.2Main menu
7.3 System menu
After entering the system menu from the main menu “Brose”,
“Modification” are displayed on the LED screen, in case“browse” is
selected, the system parameters will be displayed directly, but the
Brose
Modify
parameter can not be modified or set; in case “Modify is selected”,
the parameters can be set, However, correct operation password
should be input before modifying the system parameters.
Figure 7.3 Brose/modify menu
Switching selections with “↑/+” and “↓/-” buttons in “Browse”
and “Modification” interface, then press “ENT” button to confirm the
selection. In the operating password input interface，entering the
Password:
0208
modification status with “→”button, and then select the digit of
digitals to be input, then input the numbers with “↑/+” and “↓/-”
buttons, then confirm the operating password with “ENT” button. In
case the password is wrong, the device will return to the main menu
Figure 7.4 operation password input
automatically.
Under the interface of system parameter modification, select
the parameters to be modified with “↑/+” and “↓/-” buttons, and then
enter modification status and select the digit of inputting
Password
0000
CT ratio
500/5A
Address
0003
modification status and select the digit of inputting digitals with “→”
Figure 7.5 system menu
26
2/7
Operation instruction of ST266F Intelligent general protection and measurement control Device
buttons, and then input numbers with “↑/+” and “↓/-” buttons. After
input the numbers, move to the cursor parameter selection status with
“→” button and select the next parameter. Finally, press “ENT”
button to confirm all modifications and save the parameters and exit
the system menu.
7.4 Fixed value menu
The operation procedure of the fixed value menu is basically the
same with the system menu, fisrtly, select “Browse” and
Current Time limited
quick-break
“Modification”, then input the operating password, and then entering
Turn On/Off
On
the fixed value display screen。
The current value
21.05A
The top status colum indicates the protection type of the fixed
09/21
value.
The bottom line of status colum indicates the order/total number
Figure 7.6 value menu
of the current fixed value
All the voltage、current value are descriped by secondary value.
7.5 Event record menu
Entering the event record menu, shown as Fig.7.7
The device record and show the fresh 100 recoed,each one
contains timemark accurated to millisecond,and two pages screen for
10-10-28
08:24:35
235ms
Definite quick-break
data shown.the first is shown types of event,timemark of event
happening;the secomd is shown all AC volumn value when events
start
002/200
happening. Check the records with “↑/+” and “↓/-” buttons, and then
switch among screens of one record with “→” button.
Figure 7.7event menu
The voltage and the current in the event record menu are shown
with secondary value.
Ia: 1.543
3.001A
7.6Calibration menu
Ib: 1.534
3.002A
In order to eliminate the difference caused of different hardware
Ic: 1.527
among AC volumn imput, the calibritation menu is set especially to
2.999A
3/5
09/21
Figure 7.8 calibration menu
27
Operation instruction of ST266F Intelligent general protection and measurement control Device
adjust the channel balance through software. Operation course of
calibration menu is basically similar to the system menu.
For all channel parameters are input correctly before device for ship, it is not
necessary to change these parameters when the device normal operation. Do not enter the
modification state freely to avoid bad operation and error modification of parameters. If
you enter this menu wronged, please press ENT key to turn back to main menu.
7.7 Output menu
The output menu is used for relays testing in device. Before
operation, you should take attention to the consequence to primary
equipment. The right password must be input to enter output menu.
Relay1
Relay2
Relay3
Relay4
As shown figure 7.9.entering the menu, you can choose the
relay need to be driving by “↑/+”、 “↓/-” keys, press the key “→” to
drive relay, the relay will be return after 0.5seconds.
2/4
Figure 7.9 output menu
Note:
1. In order to prevent the protection device from malfunctioning in the process of
modifying various parameters, when the man-machine interface entering the
interface of modifying various parameters (including system parameter, setting
parameter, channel parameter), the device will automatically exit all protection
functions. Therefore, after modifying the parameters, one should timely return to the
main menu or running menu to ensure the timely switching on of protection
functioning.
28
Operation instruction of ST266F Intelligent general protection and measurement control Device
2. High energy stand-by battery is provided with the power self-supply device.
The stand-by battery can provide power for the device when there is not external
power. In case the power line can not provide enough power to the device, the device
will enter the status of low power consumption stand-by status, then the device can be
activate through low power consumption. The stand-by battery is a high performance
maintain free lithium cell and can work for over 15 years in normal conditions.
29