Features:
- Matches the EXHS G4 simplex breaker-mode configuration.
- Uses both the 41T trip relay and the 41 close relay.
- Conditions breaker, field-flashing and de-excitation status for EMIO.
Pilot relays on the board operate 41, 41T, 53A, 53B and KDEP control paths.
Contacts 41, 53A and 53B use a 70 V dc wetting supply for status feedback.
The G4 application must not be replaced with an EXHS group intended for contactor mode or redundant control.
Apter Power supports G4 configuration review, sourcing and documentation for the General Electric IS200EXHSG4A Exciter High-Speed Contactor Driver Board for GE EX2100 excitation-control service.
General Electric IS200EXHSG4A Exciter High-Speed Contactor Driver Board Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Contactor Drive for IS200EXHSG4A
- Application: G4 is used with simplex control and a breaker-mode field circuit.
- Close function: The 41 close relay is included in this group.
- Trip function: The 41T trip relay is also used for breaker control.
- Control path: EMIO commands reach the pilot-relay circuits through the exciter backplane.
De-Excitation Transfer for IS200EXHSG4A
- Initiation: The controller provides the de-excitation command through EMIO.
- Relay path: KDEP supports the de-excitation relay interface.
- Status return: EDEX de-excitation indications are conditioned before returning to EMIO.
- Protection result: Breaker opening and discharge control are coordinated in the trip sequence.
Auxiliary Contacts for IS200EXHSG4A
- Monitored points: Contacts 41, 53A and 53B are brought into EXHS.
- Wetting supply: The contact inputs are powered with 70 V dc.
- Flashing paths: Pilot relays control the 53A and 53B flashing contactors.
- Feedback: Conditioned contact states are sent to EMIO for monitoring.
Trip-Chain Testing for IS200EXHSG4A
- Configuration: Confirm the installed board is the G4 simplex breaker-mode group.
- Relay proof: Test the 41 close, 41T trip, 53A, 53B and KDEP pilot paths.
- Input proof: Verify wetting voltage and returned status for all three monitored contacts.
- System proof: Confirm EDEX and crowbar status reaches the assigned EMIO channel.