Description
GE IS200EGPAG1ABC EGPA Exciter Gate Pulse Amplifier Board
Technical Specifications
- Product Model: IS200EGPAG1ABC
- Brand: GE (General Electric) Mark VI / EX2100 Excitation System
- Warranty: One Year
- Power Supply: 125 V DC input supplied by EPDM exciter power distribution module; onboard DC‑DC converter for gate drive power
- Operating Temperature: ‑20 °C ~ +70 °C; 5‑95 %RH non‑condensing; conformal‑coated PCB
- Storage Temperature: ‑40 °C ~ +85 °C
- Protection Class: IP20 rack‑mount PCB board, non‑hot‑swap
- Channel: 6‑channel SCR gate pulse drive for 3‑phase full‑wave rectifier bridge
- Temperature threshold: heatsink thermal‑switch alarm @170 °F (76.7 °C), trip @190 °F (87.8 °C)
- Communication Interface: backplane connector; differential gate‑command input from ESEL board; external terminal block for bridge temperature, airflow, conduction‑current feedback; multi‑color status LED indicators; 5 on‑board configuration jumpers
- Supported System: EX2100 static excitation system, Mark VI turbine control platform; receives firing commands from ESEL board, drives SCR power bridge
- Overload Capacity: galvanic isolation per SCR gate; short‑circuit protection for gate outputs; thermal over‑temperature alarm & trip logic; monitors fan airflow and bridge conduction feedback signals
- Dimensions: 263 mm × 216 mm × 30 mm; weight approx. 1.95 kg
Product Overview
IS200EGPAG1ABC (EGPA) is exciter gate pulse amplifier board for GE EX2100 static generator excitation system. It accepts low‑level firing pulse commands from ESEL logic board, amplifies and isolates signals to generate high‑energy gate trigger pulses for six SCR thyristors in excitation power rectifier bridge. It acquires critical power‑bridge feedback signals: SCR heatsink temperature, cooling‑airflow status and conduction‑current feedback, feeds back status to control system for excitation protection. This board directly controls generator field excitation current to stabilise generator terminal voltage and reactive‑power output.
Important note: This board belongs to legacy Mark VI (not Mark VIe); must work with ESEL, EPDM and power‑bridge assembly, cannot run standalone.
Application Scenarios
- Thermal‑power‑plant turbo‑generator EX2100 static‑excitation cabinet: SCR firing drive for generator excitation rectifier bridge.
- Combined‑cycle gas‑turbine / steam‑turbine generator‑sets: Excitation power‑bridge gate‑pulse control.
- Industrial captive‑power‑plant synchronous‑generator excitation‑control racks.
- Legacy EX2100 / Mark VI‑system retrofit & spare‑part replacement: drop‑in spare hardware; back‑plane pin‑out, jumper‑setting and mechanical dimension compatibility minimizes cabinet‑rework and shortens generator‑unit downtime during board swap‑out.
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