Features:
- Conditions three-phase ac feedback inside the exciter auxiliary cabinet.
- Combines PPT voltage transformers with two Flux/Air core current inputs.
- Distributes common measurements to M1, M2 and C through separate connectors.
The G1 hardware is the lowest-voltage member of the EACF range and is selected for sources that do not exceed 480 V rms.
Transformer isolation produces low-level voltage signals while the coil inputs capture bridge-current information without placing conventional CT secondaries on the board.
Input filtering and short shield-ground paths limit high-frequency interference before the shared feedback is divided among controllers.
Quotation help and access to official manufacturer literature are available from Apter Power for the General Electric IS200EACFG1A Exciter AC Feedback Board.
General Electric IS200EACFG1A Exciter AC Feedback 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.
From PPT terminals to control-level feedback
- Three phases: The input transformer network samples the exciter ac source across all phases.
- G1 ceiling: Application voltage must remain within the 480 V rms rating of this version.
- Low-level output: Transformer secondary signals are suitable for transfer into the controller rack.
- Shared source: One measurement set is distributed rather than recreated separately in each controller.
Managing Flux/Air core measurements
- Two channels: Independent coil terminals accept the ac current-related feedback signals.
- Entry filtering: High-frequency suppression is applied close to the point where the leads enter.
- Shield termination: Ground screws sit within three inches of the applicable input terminals.
- Lead discipline: Coil polarity and shield routing must stay consistent through cabinet work.
Keeping three feedback destinations distinct
- M1 connector: One DB9 cable carries the conditioned channels to the first controller.
- M2 connector: A separate path supplies the second control channel in a redundant arrangement.
- C connector: The third output provides the shared controller with the same measurement source.
- Cable reach: The board-to-backplane connection supports runs up to 90 m.
Protecting signal quality in the auxiliary enclosure
- Board location: The feedback terminal board mounts with the high-voltage interface equipment.
- Ground reference: Shield screws bond to chassis ground near the signal entry point.
- Route separation: Low-level outputs should remain separated from noisy power conductors.
- Post-work comparison: M1, M2 and C values should agree before the excitation system is returned to service.