GE Industrial Solutions Entellisys Installation - Manual (Page 76)

70
Entellisys Low Voltage Switchgear
Appendix D. Circuit Breaker Accessory Devices
Shunt Trip
The Shunt Trip allows the breaker to be opened remotely by
the EntelliGuard Messenger™. It is always provided on
electrically operated breakers. The catalog number and
operating voltage for the Shunt Trip are listed in Table D-1.
For installation instructions see DEH168 or DEH169.
Breaker Rating Catalog Number Voltage Rating
800A – 2,000A WPS1SF60120 120 Vac, 60 Hz
3,200A – 5,000A WPS1LF60120 120 Vac, 60 Hz
Table D-1. Catalog number and electrical rating for the Shunt Trip accessory.
The Shunt Trip causes the circuit breaker to trip when its coil
is energized. An “A” auxiliary switch, which is closed when
the breaker is closed, is in series with the Shunt Trip coil, as
illustrated in Figure D-1. The external tripping source is
connected to positions 5 and 7 on the secondary disconnect.
Figure D-1. Shunt Trip connections to the Secondary Disconnect
.
Charging Motor
The Charging Motor provides a means of electrically charging
the springs that close the breaker. The Charging Motor is
available only as a factory-installed option. It is always
provided on electrically operated breakers.
The circuit breaker closing springs are charged automatically
when 120Vac is applied to terminals 8 and 17 of the
secondary disconnect. When the springs are fully charged, a
cutoff switch automatically de-energizes the motor. The
closing springs will recharge automatically after the breaker
closes.
Breaker Rating Catalog
Number
Voltage
Range, Vac
800A – 2,000A 568B596G5 104–127
3,200A – 5,000A 568B596G2 104–127
Remote Close
The Remote Close accessory provides a means of remotely
closing the circuit breaker after the closing springs have
been charged. It is always provided on electrically operated
breakers. The catalog number and operating voltage for the
Remote Close accessory are listed in Table D-2. For
installation instructions see DEH-172 or DEH-173.
Breaker Rating Catalog Number Voltage Rating
800A – 2,000A WPRCSF60120 120 Vac, 60 Hz
3,200A – 5,000A WPRCLF60120 120 Vac, 60 Hz
Table D-2. Catalog number and operating voltage for the Remote Close
accessory.
A circuit breaker equipped with the Remote Close accessory
can be closed remotely by applying control voltage to
terminals 9 and 18 of the secondary disconnect.
The Remote Close accessory is continuously rated and has an
antipump feature that prevents a motor-operated breaker
from repeatedly closing if the closing signal is maintained.
The closing control voltage must be removed for 1–2.5
seconds and then reapplied for each breaker closure.
Open-Fuse Lockout
The Open-Fuse Lockout is supplied on integrally fused
breakers or when the breaker is used in combination with a
Fuse Rollout Element. When any fuse blows, the Open-Fuse
Lockout trips the breaker to prevent single-phasing. This
accessory is available only as a factory-installed option.
The Open-Fuse Lockout contains an individual trip solenoid
for each pole, connected directly across the fuse in that
phase. When any fuse blows, its solenoid is energized and
trips the breaker. An indicator shows which fuse has blown.
The breaker is mechanically trip-free and cannot be reclosed
until the Open-Fuse Lockout is reset.
The Open-Fuse Lockout is internally wired to the fuses on
800- and 1,600-ampere frame breakers. On 2,000-, 3,200-,
4,000-, and 5,000-ampere frame breakers, the Open-Fuse
Lockout is wired to the secondary disconnect as illustrated in
Figure D-3. The Open-Fuse Lockout connects to the fuses in
a Fuse Rollout Element through the secondary disconnect.
5
7
Aux Switch
3C
3
2
1
Shunt Trip