GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 User Manual
Page 9
2011-03-14 S47183De rev.01
Design and specifications are subject to change without notice
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3.2.9 Auxiliary switch
UL listed breaker is equipped with 3, 5 or 8 isolated, form C,
invertible auxiliary contacts (1 NO/NC each). The movable main
arm activates the contacts. The contacts are wired to 15-pin
control terminals (-X4 and -X5), on the front of the control box
[Fig. 30]. Conventional thermal current rating is10 A. Maximum
electrical ratings for switches are 1 A/230 V, 0.5 A/110 V and
0.3 A/220 V.
Fig. 12 Auxiliary contacts layout in control box
3.2.10 Indicators
POSITION INDICATOR is- mounted at the front of the closing
solenoid. It is mechanically switched by the solenoid’s shaft
and indicates position of the main contacts.
Green “OPEN” – means contacts are open
Red “CLOSED” – means contacts are closed
Fig. 13 Position indicator
Optionally, the circuit breaker can be equipped with following
indicators:
OC TRIP TARGET is a potential free, NO contact mounted at
the top of the OCT [Fig. 14]. Provides a signal when OCT
operates.
Fig. 14 OC trip target
ARC CHUTE INDICATOR – a potential free, NO contact mounted
on the sidewall. Locks electrically the closing drive when arc
chute is not installed on [Fig. 15].
Fig. 15 Arc chute indicator
3.2.11 Closing solenoid drive
A high power solenoid is used to perform fast closing
operation. This drive is mounted at the front of the breaker
and is enclosed in a grounded casing [Fig. 16].
Closing solenoid is supplied from an external power source,
independent from the breaker internal controls. Voltage level
must be defined at order placement. Rated power, depends
on breaker type, but is between 1.8 kW and 2.6 kW.
CLOSING is enabled by external dry contact closure (-X2 :4/:5).
Minimal close signal duration shall be 100 ms.
The closing drive system always includes a self-interrupt
control circuit (SU circuit board). This circuit enables short
activation with a time of ~150 ms. The SU switches power to
the solenoid and automatically disconnects it after ~400 ms.
The SU unit also prevents repeated drive closing, due to an
existing and continuous short circuit conditions and provides
an “anti-pumping” safety feature.
Fig. 16 Solenoid closing drive and control box
After a closing attempt, the switch-in mechanism is
electrically blocked for approximately 8 sec. Lock time
increases to 14 sec, if internal C-bank (NEKO) is present. This
prevents premature closing following a short circuit.
Operations Counter
Position Indicator