Part Number IS200EACFG3A Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series Mark VI/VIe Function Module Availability In StockIS200EACFG3A is an Exciter AC Feedback Board manufactured and designed by General Electric as part of the EX2100 Series used in GE Excitation Control Systems. This board measures the exciter PPT ac supply voltage and current. It features terminals for two Flux/Air core coils and transformers for three-phase voltage measurement.
The board connects to controllers M1, M2, and C via three DB9 connectors. Up to 90 meters of cable can be used to connect the EBKP backplane board to the EACF. For the flux/air core input signals, the board provides high-frequency noise reduction close to the signal entrance point. The input screws are positioned no more than three inches from the cable shield terminal screws connected to the chassis ground. Exciter Voltage Measurement A single three-phase input voltage in the nominal range up to 480 V rms 脗卤20% at 50/60 Hz is supported by the G1 version. A single three-phase input voltage in the nominal range up to 1000 V rms 20% at 50/60 Hz is supported by the G2 version. From their secondary outputs, the potential transformers on both boards deliver a nominal 1.6 V rms. Application Data The layout of the EACF board is depicted in the image below.
The board uses three-phase voltage transformers T1 through T4. For the voltage inputs, use the individual screw connectors TB1, TB2, and TB3. The two Flux/Air core coils are wired through terminal block TB4. Cables for the EMIO boards connect to the EBKP backplane using the three 9-pin sub-D connectors J504, J509, and J514. Voltage test rings TP1-4 are used to measure the phase voltage output from the potential transformers as follows: Between TP1 and TP2, obtain Phase to Phase (or Line) Voltage AB. Between TP3 and TP4, obtain Phase to Phase Voltage BC. Between TP4 and TP1, obtain Phase to Phase Voltage CA.
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