IS200EACFG3A - Exciter AC Feedback Board

IS200EACFG3A - Exciter AC Feedback Board IS200EACFG3A - Exciter AC Feedback Board

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Part Number: IS200EACFG3A
Manufacturer: General Electric
Series: EX2100
Product Type: Exciter AC Feedback Board
Number of channels: 12
Technology: Surface Mount
Common Mode Voltage Range: ±5 V
Maximum Lead Resistance: 15Ω
Analog output current: 0-20 mA
Operating temperature: -30 to 65 °C
Size: 8.26 cm high x 4.19 cm
Repair: 3-7 Day
Availability: In Stock
Weight: 2lbs 4oz
Country of Origin: United States
Manual: GEI-100465


IS200EACFG3A is an Exciter AC Feedback Board manufactured and designed by General Electric as part of the EX2100 Series used in GE Excitation Control Systems. The exciter PPT ac supply voltage and current are measured by the IS200EACF Exciter Ac Feedback board (EACF). The terminal board comprises terminals for two Flux/Air core coils as well as transformers for a three-phase voltage measurement. Three DB9 connectors are used to link the voltage and current circuit outputs to the controllers M1, M2, and C. Up to 90 m of cable can be used to connect the EBKP backplane board to the EACF.

For the flux/air core input signals, high-frequency noise reduction is offered close to the signal entrance point. Where applicable, the input screws are positioned no more than three inches from the cable shield terminal screws connected to the chassis ground.


  • A single three-phase input voltage in the nominal range up to 480 V rms +20% at 50/60 Hz is supported by the G1 version.
  • A single three-phase input voltage in the nominal range of 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.


The image below depicts the EACF board's layout. Three-phase voltage transformers T1 through T4 are used. For the voltage inputs, use TB1, TB2, and TB3 individual screw connectors. The two Flux/Air core coils are wired through terminal block TB4. Cables for the EMIO boards are connected to the EBKP backplane using the three 9-pin sub-D connectors J504, J509, and J514. Voltage test rings TP1-4 are for measuring 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.

WOC has the largest stock of GE Excitation Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.


What is the Exciter AC Feedback Board?

The Exciter AC Feedback Board is a component used in exciter systems to regulate and control the output of an alternator or generator.

What does the Exciter AC Feedback Board do?

This board monitors the output voltage of the alternator and adjusts the excitation current to maintain a stable output voltage.

Why is the Exciter AC Feedback Board important?

It plays a crucial role in ensuring the stability and reliability of the power generation system by regulating the voltage output.