IS200EPCTG1A GE Fanuc Exciter PT/CT Board EX2100 Series

IS200EPCTG1A Exciter PT/CT Terminal Board – Precision Signal Conditioning for EX2100

• Manufacturer: General Electric — part of the EX2100 series.
• Function: Exciter PT/CT Terminal Board (EPCT) for generator voltage and current feedback.
• Input types: Two 3-phase PT inputs (115 V rms, 50/60 Hz) and two CT inputs (1 A or 5 A).
• Isolation: Onboard isolation transformers provide critical signal separation.
• Analog input: One non-isolated channel accepts 0–10 V dc or 4–20 mA (selectable via JP1).

Key Technical Specifications

• Model: IS200EPCTG1A — GE part number for the EPCT board.
• Power supply: 28 V dc (supplied from the control rack).
• PT input rating: 115 V rms ± , with internal fuses; burden less than 1 VA.
• CT input range: 1 A or 5 A ac; burden less than 1 VA.
• Scaled outputs: Isolation transformers produce 1.533 V rms for 115 V PT input (open delta).
• Analog input range: 0–10 V dc or 4–20 mA; cable resistance ≤15 Ω for 300 m max length.
• Operating temperature: -30 to 65 °C — suitable for harsh industrial environments.
• Dimensions & weight: 23.8 cm x 8.6 cm; 0.45 kg.
• Wiring: Accepts #10 AWG to #12 AWG; PT/CT cables up to 1000 ft.

Board Layout and Connectivity

• Three terminal blocks: TB1 for PT/CT field wiring; TB2, TB3 for CT shorting protection.
• Connectors J305, J308, J315 route signals to EMIO board in simplex or redundant controllers.
• Eight test points (TP1–TP8) allow direct monitoring of isolation transformer secondary legs.
• Switch configuration on TB1 matches generator PT wiring (wye or delta).
• Maximum wire size #12 AWG for PT circuits ensures low voltage drop over 1000 ft.

Measurement Accuracy & Isolation

• Generator voltage measurement uses two isolation transformers creating a three-wire open delta output.
• Generator current measurement uses dedicated CT isolation transformers preserving signal integrity.
• High reliability designs allow up to three IS200EPCTG1A boards in parallel for redundant systems.
• Built-in burden <1 VA minimizes loading on PTs and CTs.
• Analog input provides 0.1% resolution for 4–20 mA or 0–10 V signals.

Frequently Asked Questions

• What is the function of the IS200EPCTG1A? It conditions PT and CT feedback signals from generators providing isolated and scaled outputs to the EX2100 control system.
• What PT voltages and CT currents can this board handle? It accepts 115 V rms PT inputs at 50/60 Hz and CT inputs of 1 A or 5 A.
• Is the IS200EPCTG1A a new original part? Yes we supply brand new original sealed units.
• What are the shipping options and delivery time? We ship via FedEx UPS or DHL within 5 days of order with express courier taking 2–5 business days.
• Can I return the board if unused? Yes we support 30-day returns for unopened items in original packaging.

Contact Information
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