GE Industrial Solutions GERAPID 8007R, 10007R WITH ARC CHUTES 1X2, 1X3 - Manual (Page 38)

7.4 Troubleshooting
Breaker does not CLOSE. Breaker does not OPEN.
WARNING! Below operations are done with control voltage
connected. Only trained specialist or GE Service
representative shall perform them. Risk of electric shock!
A) Closing drive doesn't operate electrically but it is still
possible to close the breaker manually by mean of the
hand lever.
A) Shunt trip does not operate. Breaker is able to CLOSE
and OPEN by means of hand lever.
1) Check the supply voltage of the drive (-X2 :1/:2). The
voltage shall not be less than 80% of drive’s rated
voltage.
1) Check points A2 to A5.
2) Check the self cut off contacts HS11 and HS12. 2) Check the supply voltage of the controls (-X3 :4/:5).
The voltage shall not be less than minimum input voltage
required for installed voltage converter 3) Check the wiring and 24 V DC supply for ST PCBs.
4) Check the continuity of shunt trip coils.
5) Replace the ST PCB or ST coil if necessary. 3) Calculate the voltage drop at both supply lines and
check for adequate wire size.
Contact GE Service in case of problem is not solved. 4) Check the polarity of the supply connections.
5) Check continuity of the control connections.
B) Zero voltage release does not operate. Breaker is able to
CLOSE and OPEN by means of hand lever.
Open the control box:
1) Check points A2 to A5. WARNING! Following operations are done with control
voltage connected. Only trained specialist or GE Service
representative shall perform them. Risk of electric shock!
2) Check point B3 to B5.
3) Check the continuity of UVR’s coils.
4) Replace the UVR PCB or UVR coil if necessary.
6) Check if the PCBs’ plugs are connected and
screwed. Contact GE Service in case the problem is not solved.
7) Check if there is 24 V DC available at output of both
voltage converters. C) ED impulse release does not operate. Breaker is able to
CLOSE and OPEN by means of hand lever.
8) Check the status of the red LED diode on the SU
PCB.
1) Check points A2 to A5.
-
Does not light – power supply failure;
2) Check the wiring and 24 V DC supply for NEKO PCBs.
-
Weak light – system ready to CLOSE;
3) Check the voltage level and timing of firing signal.
Voltage signal shall be between 6-24 V DC and duration
of minimum 3 ms.
- Intensive red light – system not ready to
CLOSE. Closing STOP circuit is active, or NEKO PCB is
not charged, or “anti-pumping” is active for 15 sec.
4) Check if the NEKO is signaling C-bank charging correctly.
Relay is closed when NEKO is ready to operate.
9) Check if the Closing STOP circuit is not open. Measure
voltage at SU PCB, (-X12 5:/:6). There shall be ~24 V DC
available for actuation of “closing stop relay”. 5) Check the continuity of ED coils.
6) Replace the NEKO PCBs if necessary. 10) Replace any ST/UVR/NEKO PCB if necessary.
11) Replace the SU control PCB.
Contact GE Service in case the problem is not solved. 12) Switch OFF the power at control box! Check
continuity and resistance of solenoid winding. Replace
the solenoid in case of winding breakage.
Contact GE Service in case the problem is not solved.
B) Closing drive operates electrically, but it is not possible
to keep contacts closed.
1)
Check the forced tripping release (if installed). A
permanently blocked tripping device, during closing
operation, will cause closing failure and force contact
opening.
2) Check contact system area. Look for any parts that
may be stuck between contacts or into mechanism
module.
3) If the zero voltage release is installed, check
connection of (–S2) pushbutton..
Open the control box (only when UVR is installed).
4)
Check the wiring connections for UVR PCBs.
5) Check 24V DC supply for the UVR PCBs.
Contact GE Service in case the problem is not solved.
38 Design and specifications are subject to change without notice DTR01807 rev.02 2010-02-16