The GE IS200EHPAG1A is an industrial Gate Pulse Amplifier Board designed for use in GE EX2100 Excitation Control Systems and Mark VI Speedtronic turbine automation platforms. It serves as a key power-stage support module that amplifies low-level firing commands from the controller into high-current gate pulses for SCRs (Silicon Controlled Rectifiers) in exciter bridges. This board ensures robust and reliable SCR gate drive, enhances firing accuracy, and supports fast switching performance — critical for excitation control, generator stability, and safe operation under dynamic load conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | IS200EHPAG1A |
| Module Type | Gate Pulse Amplifier (EHPAG) Board |
| System Series | GE EX2100 / Mark VI Speedtronic |
| Primary Function | Amplify controller firing signals to SCR gate drive currents |
| Input Signal Level | Low-level logic firing commands from EMIO or controller |
| Output Signal Level | High-current isolated gate pulses for SCR bridge |
| Isolation | Optical isolation from logic inputs to power outputs |
| Protection Features | Overcurrent gating protection, transient filtering |
| Operating Temperature Range | –30 °C to +65 °C (typical industrial cabinets) |
| Mounting | Backplane or panel mount in exciter cabinet |
| Dimensions (H × W × D) | ~263 mm × 58 mm × 28 mm (standard board form factor) |
| Weight | ~1.10 kg (approx.) |
| Typical Power Supply | Logic 24 V DC; internal high-current gate drive supply |
The IS200EHPAG1A board is built for durability and stable power conversion in demanding industrial environments, turning field excitation commands into robust SCR gate drive pulses for accurate control of field current and voltage.
Recommended Related Modules
To form a complete excitation control and power drive system, the EHPAG board is typically paired with:
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IS200EACFG3A – High-Voltage AC Feedback Board
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IS200EDCFG1B – DC Feedback Board
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IS200DSPXH1D – Digital Signal Processor Board
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IS200EISBH1A – ISBus Interface Board
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IS200EXAMG1A – Excitation Filter/Amplifier Board
These boards work together to provide feedback acquisition, control computation, and power conversion in a robust excitation system.
Popular GE EX2100 / Mark VI Control Modules
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IS200DRLYH1B – Relay Output Terminal Board
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IS200ECTBG1A – Current Transformer Bridge Board
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IS200EBKPG1C – Exciter Backplane Control Board
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IS200BICIH1A – Bridge Interface Controller Board
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IS200ACLEH1B – Application Control Layer Module
These modules often coexist within turbine and generator control cabinets to support distributed control and signal interfacing duties.
