GVR Recloser
For Pole Mounting and Substation
Application
www.fki-et.com
www.fitandforget.com
www.fkiswitchgear.com
FkiFit&Forget
Technology
TM
GVR
FIT AND FORGET RECLOSER
From a new generation of intelligent switchgear, the GVR
With a Choice of Protection
brings the reliability of modern materials and technology
Polarr
to overhead distribution networks, achieving a lifetime of
maintenance free operation.*
The standard Polarr relay offers full auto-reclose
protection and control functionality. Its long life
lithium batteries eliminate the need for an auxiliary
supply.
Key Features
The Whipp & Bourne patented, single coil magnetic
actuator mechanism which allows the GVR to operate
independently of the MV supply and to be tested in an
ordinary workshop.
Environmentally friendly vacuum interruption
produces no by-products.
The lightweight aluminium tank makes the GVR
easier to transport and install.
The EPDM or silicone rubber bushings are resistant
to damage from vandalism or mishandling.
By extensive use of insulated mouldings, in particular
the bushings, the total number of parts has been
reduced by a factor of x20 and the number of moving
parts by x50.
No scheduled maintenance for 30 years*
*
Excludes control battery replacement
10 yrs or 10,000 ops for lithium batteries, 5 yrs for lead acid batteries.
Panacea
Alternatively, the Panacea offers the highest levels
of control and protection for improved distribution
network performance, from directional auto-reclosing
for closed loop schemes to full remote control
utilising the DNP3.0 protocol.
Environmental Design
The award-winning* GVR gas-filled vacuum recloser
combines the high reliability of vacuum interruption
with the controlled environment and high dielectric
strength of SF6, in a compact, maintenance-free
unit. Since SF6 is only used as insulation, there is
no health hazard from toxic by-products of arcing.
Electrical life is well in excess of ANSI requirements.
The patented, single coil magnetic actuator provides
consistent performance and a dramatic reduction in
the number of moving parts. Materials and finishes
have been carefully chosen for reliability - from
EPDM bushings, tested for tracking and erosion to
IEC 61109, in salt, fog and other environments, to the
neodymium iron boron permanent magnets used in
the mechanism.
Application
The GVR can be pole mounted or substation mounted
and can operate as a stand alone recloser without
the need for an additional auxiliary supply, or it can
be integrated into the most advanced distribution
automation schemes.
By using the advanced control and protection
functions of the Panacea, the GVR can also be used
in applications where reclosers have not traditionally
been used such as closed rings and underfrequency
load shedding schemes.
* Queens Award for Technological Achievement
and the MacRobert Award, both awarded in 1997.
ATTENTION TO ENGINEERING DETAIL
Vacuum Bottles
in Monoblock
Magnetic Actuator
1
Main Features
1
Single piece, aluminium or copper-cored EPDM
or silicone rubber bushings, with grooves to take
optional wildlife guards/MV boots.
2
Current transformers are mounted within the tank's
controlled environment, while optional capacitive
4
voltage dividers provide voltage signals for use by
the Panacea or an RTU.
2
3
Aluminium housing with lightweight, moulded
baseplate, secured by stainless steel bolts and
3
incorporating rubber 'O' ring seals.
4
Pressure-relief disc, to comply with IEC 60298
Appendix AA, offers the highest levels of safety.
5
Mechanical ON/OFF position indication visible through
clear viewing window from ground level.
6
Hook stick-operated manual trip and lockout control.
7
A single moulding supports the three phase vacuum
7
interrupter assembly, magnetic actuator mechanism
and one-piece drive beam.
8
8
The patented, single coil magnetic actuator is based
on a solenoid plunger, held in the tripped or closed
position by a permanent magnet.
6
5
6
Position Indication
Umbilical Cable Plug and
Socket on GVR Tank
Armature
Magnetic flux
from Permanent
magnet
Permanent
magnet
Non magnetic
drive rod
Actuator coil
1
Drive rod
movement
Patented, Single Coil Magnetic Actuator
Magnetic flux
from actuator
coil
The actuator coil is energised in one direction to
'power close' the GVR and in the opposite direction
to open it by de-latching the holding force. This is a
Magnetic flux
from Permanent
magnet
unique feature of the single coil actuator design used
Closing current
in the GVR and ensures reliable tripping operation
2
under all battery conditions and even for manual trip.
Closing
Contact pressure springs
compressed
The bi-stable design ensures that the plunger is
held back in the open position (1) until the solenoid
current rises above the level required to guarantee
closure. Once the holding force is overcome (2), the
circuit breaker closes positively (3), due to the stored
energy in the solenoid and permanent magnets.
Tripping
3
The solenoid is energised in the reverse direction (4)
to overcome the magnetic hold-on force and delatch the actuator. Opening is then completed by the
Drive rod movement caused
by spring pressure
energy stored during the closing stroke in the contact
pressure and opening springs and is completely
independent of the power supply during electrical
opening, and of the operator during manual opening.
The energy required to trip is approximately 1/30th of
that required to close.
Tripping current
4
CONTROL AND PROTECTION
POLARR
Principle of Operation
The Polarr is the standard relay package for the
GVR. It measures the 3 phase and residual currents
using CTs located in the GVR, and performs autoreclosing over current, earth fault and sensitive earth
fault protection. The low power, microprocessor
architecture of the Polarr is unique to the power
industry. Its design has been perfected over several
years and offers the user significant benefits
through the elimination of the need for any external
power supply. In addition to this, the Polarr offers
several advanced auto-reclosing functions in a
comprehensive but cost effective package.
Weather Protection
The Polarr relay and control batteries are housed in
a control box located on the pole at ground height
underneath the GVR. Connection to the GVR is via an
umbilical cable and weather proof plug and socket
that is used to carry the CT currents and the GVR
control signals. The IP56 sealed control box is made
from stainless steel, with an outer double skinned
sun shield of polyester-coated galvatite.
It protects against the harshest environment and
maintains an even internal temperature keeping the
relay condensation-free.
Control Batteries
High energy density lithium battery technology makes
the GVR with Polarr ideal for applications where an
auxiliary power supply is not available.
Alternatively, where an auxiliary supply is already
available, or when one is required to power an
additional RTU and communications equipment,
rechargeable lead acid batteries can be supplied
as an option.
User friendly windows software for programming settings
and viewing history.
Programming Protection Settings
Local Control
Protection settings can be programmed via the dot
Push-buttons are provided for the standard auto-
matrix display and keypad or downloaded though the
recloser functions, while separate keys and LED
serial port from a notebook computer using libraries
indication are used for the circuit breaker control.
of settings created in Windows based software.
Remote Control
Data Logging
All of these functions are also available through
Historical, diagnostic and load current data can be
a parallel SCADA port on the back of the relay,
accessed through the local display or the serial port.
accessible through a gland plate in the control box.
The Polarr history is held in non-volatile memory, and
Voltage free contacts and opto-isolated inputs offer
includes the time and date of the last 20 sequences
a standard interface to a third party RTU of the
together with the number of trips in the sequence and
customer's choice. Alternatively, an enlarged control
fault magnitude of each of the elements.
box to house an RTU and rechargeable battery pack
can be provided. More advanced remote control
Minimum Trip Currents
The multi-ratio CTs located in the GVR and a wide
range of programmable minimum trip settings
ensure that the GVR and Polarr can be used at any
point in the network, from substation through to the
feeder ends with the earth fault currents as low as
one ampere.
Short Cut Keys
In addition to large, clear control keys, LED indication
and a menu-driven display for entering settings
and viewing historic data, the front panel also
incorporates three push-buttons for instant access
to load current, fault target and battery condition
information.
Sequence Co-ordination
The Polarr's advance sequence co-ordination logic
and fast response times of the relay allow coordinating delays as low as 60mS to ensure that
only the recloser closest to the fault operates.
functionality is provided by the Panacea.
CONTROL AND PROTECTION
PANACEA (351P)
The Panacea is based on the SEL 351R Relay and includes
many features only associated with substation class
protection, offering the optimum in the control and protection
of distribution networks. The Panacea includes:
Advanced control and protection functions including
directional protection, voltage synchronisation, load
encroachment logic and underfrequency load shedding.
An intelligent communications port for direct connection
to a radio or modem, eliminating the need for an
additional Remote Terminal Unit and so saving on the
overall purchase price.
The Power System Variables
The line and residual currents are measured using
CT's located inside the GVR. The voltage on both sides
of the GVR and the residual voltage are taken from
internal capacitive dividers or external VT's. The output
GVR Control and Diagnostics
of these transducers is produced in the Protection and
Operation of the GVR actuator is through energy
Measurement module using a combination of high speed
stored in long life capacitors.
analogue circuitry and digital signal processing.
Uninterruptable Power Supply
Protection
The Panacea Uninterruptable Power Supply (UPS)
In addition to directional over current, earth fault and
is suitable for 120 vac. It includes a long life 24 volt
sensitive earth fault auto-reclose protection, advanced
lead acid battery for standby use, with temperature
directional earth fault algorithms allow the Panacea
controlled charging and a battery test facility.
to make an automatic selection of the best earth fault
The UPS module monitors the auxiliary supply status,
directional element for the system conditions. Other
operating characteristics and battery temperature
protection features such as load encroachment logic and
to ensure continuity of supply under all operating
underfrequency load shedding increase the functionality
conditions.
of the GVR to levels previously only available in complex
substation schemes.
Metering and Load Profile
The Loop Scheme Control System (LSCS)
The power system variables including the volts, amps,
The Loop Scheme Control System (LSCS) is used to
watts and vars, can be viewed in real time on the
automatically restrict permanent faults to a smaller
Panacea front panel or remotely through the serial
section of a distribution system, whilst maintaining supply
port. It is also possible to average the current and
to the un-faulted sections. For a typical five recloser
voltage measurements over 5, 15, 30 or 60 minute
based Loop Scheme, a permanent fault anywhere on
periods to produce a load profile. This can be stored
either feeder should never result in the loss of more than
in memory and later downloaded through the local or
one third of the load on the affected feeder. Using the
remote serial ports.
power and flexibility of SELogic a customer specific logic
scheme can be developed.
Event Reporting
The Panacea can be set up to record various events
The SEL-351R Recloser Control
such as loss of auxiliary power or a protection
For recloser users whose policy it is to standardise
event. Up to 512 events can be stored in non-volatile
on the Schweitzer 351-R Protection and Control rather
memory, each one date and time-stamped. This is
than the Panacea, then the option is available. The SEL-
supported by a separate oscillogram report showing
351R Recloser Control combines traditional recloser
up to thirty 15-cycle or fifteen 30-cycle reports.
control functions with technologically advanced SEL
relaying features.
Local Control
The Panacea local control panel offers the same
In the USA, Schweitzer Engineering Laboratories provide
complete technical support for the entire control cabinet.
basic functionality as the Polarr. Local LED indication
has been increased to offer even greater operational
and system status information.
Remote Control
The Panacea controls, status indication, settings
and history are available remotely through one of 2
serial ports on the back of the relay. It is possible
to connect directly to a radio or modem and to
communicate with a SCADA system using the DNP3.0
protocol (other protocols available on request). Space
is provided in the control box to mount a suitable
radio or modem and the UPS provides a 12 volt 0.5
amp fused supply.
Capacitive Voltage Sensing (CVTs)
Located inside the GVR, these CVTs are a low cost
method of measuring source and load voltage. They
can be used with the Panacea for direct voltage
measurement.
User friendly Windows based software for EZ
settings and history retrieval (above)
SUMMARY OF PROTECTION CHARACTERISTICS
Operating Sequence
Up to 4 trips to lockout are available for over current,
earth fault and sensitive earth fault sequences. The
time between GVR clearing the fault and reclosing
Polarr
Trips to lockout
Dead times (S)
Panacea
1 to 4
0.25* to 180
0.25 to 180
Reclaim time (S)
5 to 180
is known as the dead time and is selectable for
each trip. If the fault is temporary, the protection
*0.25 for 1st dead time,
0.75 minimum for 2nd and 3rd dead times in sequence
will begin to reclaim after reclosing. If the fault is
permanent, the GVR will lockout after the last trip.
A Cold Load Pickup feature avoids spurious tripping
when manually closing onto de-energised loads.
Polarr
Time Current Characteristics
Panacea
Curves (t>)
IEC 255 (IDMTL, VIDMTL,
EIDMTL) & McGraw Edison
Inst. 1>> (xln)
1-20 times
Polarr
Panacea
CT Ratio
300/200/100
400:1 or 250:1
The combination of multi-tapped protection CTs and
1> (xln)
0.2 to 3.2
0.1 to 3.2
the range of trip settings within Polarr and Panacea
1o> (xln)
0.1 to 1.6
0.005 to 3.2
relays ensure suitable operation at any point in a
1osef>(xln)
0.01 to 0.16
0.005 to 1.5
Time current characteristics are programmable for
every trip in the sequence. There is a choice of time
1-30 times
dependant curves of definite time. The curves can be
modified using time multipliers, additional delays and
minimum response times. Instantaneous protection
offers the fastest fault clearing times and can be used
with additional delays for sequence co-ordination.
Minimum Trip Settings
network.
Directional Control
Phase and ground directional elements are standard
features of the Panacea. Direction and polarization
settings are available for the control of the phase
elements, earth fault elements and the negative
sequence elements.
Polarization quantities include positive sequence
voltage, negative sequence voltage and zero sequence
voltage.
Ratings (ANSI C37.60 or better)
GVR 15
GVR 27
GVR 38
Maximum System Voltage
kVrms
15.5
27
38
Continuous Current
Amp
630
630
630
Interrupting Current
kA
12.5 / 16
12.5
10
Impulse Voltage Withstand
kV peak
110
125 / 150
150 (internal)
170 (external)
Power Frequency Withstand Dry
kVrms
50 for 60 secs
60 for 60 secs
70 for 60 secs
Power Frequency Withstand Wet
kVrms
50 for 60 secs
50 for 60 secs
60 for 60 secs
Rated Gas Pressure for Above
Atmospheric
Atmospheric / 0.3 bar* 0.3 bar (gauge)
Number of Operations with No Maintenance
10,000
10,000
10,000
Weight
145
145 / 155*
155
kgs
* Ratings for 150kV impulse version.
Accuracy
Protection +/- 5% of time to IEC255
Umbilical Dimensions
Dimensions “L”
Cable Length
Instrumentation up to 1% for Panacea
Up to 2000
3000
Voltage measurement +/- 3% with CVTs or 1% with VT.
2001 - 3000
4000
3001 - 4000
5000
4001 - 5000
6000
Type Tests
Bushing Dimensions
Electromagnetic
Protection
ANSI C37.60
IEC 801
IEC 255
Substation Mounted
Dimensions
Voltage
Creepage
A
B
C
D
Up to 27kV
830mm
369
286
571
298
38kv
1178mm
469
312
623
272
Pole Mounted
c
d
b
Typical
Substation
Support
280
a
434
O620
Manual Trip/Lock Out
(hook stick)
Dimension "L"
General
Electronic
Control Unit
Battery Power pack
175
Low Voltage Umbilical Lead
Newport Road, Blackwood, South Wales UK NP12 2XH
Tel: +44 (0)1495 223001 Fax: +44 (0)1495 225674
sales@fkiswitchgear.com
Hawker Siddeley Switchgear Pty Brisbane Australia
PO Box 36, Kallangur, Qld 4503, Australia
Tel: +61 (0) 7 3888 1455 Fax: +61 (0) 7 3888 3241
sales@hssaustralia.com
www.hssaustralia.com
FKI Switchgear South America
Carrera 21 No 86A-31 of 101, Bogota, Colombia
Tel: +57 (0) 1 256 4617 Fax: +57 (0) 1 655 8915
sales@fkiswitchgear.com
Switchgear Works, Castleton, Rochdale, Lancashire UK OL11 2SS
Tel: +44 (0)1706 632051 Fax: +44 (0)1706 674236
sales@fkiswitchgear.com
Whipp & Bourne Inc.
2500 Almeda Avenue, Suite 115, Norfolk USA VA 23513
Tel: +1 (0) 757 858 8972 Fax: +1 (0) 757 858 8987
sales@fkiswitchgear.com
www.fki-et.com
www.fitandforget.com
www.fkiswitchgear.com
The Design and manufacture of our products are subject to constant
review, therefore slight variation may occur between the details given
and the equipment supplied.
Feb 2005
PART OF THE
FKI GROUP OF COMPANIES