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IS200EPSMG2AEC

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IS200EPSMG2AEC
April 24, 2026

IS200EPSMG2AEC

IS200EPSMG2AEC is an EPSM Group 2 excitation power PCB module designed exclusively by GE for Mark VI/Mark VIe and EX2100 excitation systems, serving as the core voltage regulation/distribution unit in the excitation system power supply chain. This module receives system DC bus input, converts and outputs multiple isolated DC voltages (including 24VDC, 5VDC), supplying power to exciters, excitation control loops, C/M1/M2 controllers, signal conditioning boards and actuators. It features electrical isolation, overvoltage/overcurrent/short-circuit/undervoltage/reverse-polarity protection, redundancy compatibility and wide-temperature industrial design, adapting to harsh environments such as power plants, petrochemical facilities and offshore platforms, supporting hot-swapping and online maintenance, and meeting SIL safety level requirements.

Description

Basic Information

  • Model: IS200EPSMG2AEC

  • Brand & Series: GE Speedtronic Mark VI / Mark VIe Turbine Control System, EX2100/EX2000 Excitation Control System, EPSM (Exciter Power Supply Module) Group 2 Series

  • Product Type: Dedicated Power Regulation & Distribution PCB for Excitation Systems, Exciter Auxiliary Power Board, Core Power Supply Component for Control Systems

  • Compatible Systems: GE Mark VI, Mark VIe TMR (Triple Modular Redundant) Control System, EX2100/EX2000 Synchronous Generator Excitation Regulation System, compatible with EPDM, EDCF, EDEX, EGDM excitation sub-modules

  • Country of Origin: USA

  • Function: Provides multiple isolated regulated DC power supplies for exciters, excitation regulation loops, control boards, sensors and relays; integrates power conversion, filtering, multi-protection and fault diagnostics to ensure stable operation of excitation systems and unit control

Product Overview

IS200EPSMG2AEC is an EPSM Group 2 excitation power PCB module designed exclusively by GE for Mark VI/Mark VIe and EX2100 excitation systems, serving as the core voltage regulation/distribution unit in the excitation system power supply chain. This module receives system DC bus input, converts and outputs multiple isolated DC voltages (including 24VDC, 5VDC), supplying power to exciters, excitation control loops, C/M1/M2 controllers, signal conditioning boards and actuators. It features electrical isolation, overvoltage/overcurrent/short-circuit/undervoltage/reverse-polarity protection, redundancy compatibility and wide-temperature industrial design, adapting to harsh environments such as power plants, petrochemical facilities and offshore platforms, supporting hot-swapping and online maintenance, and meeting SIL safety level requirements.
The module is installed in standard Mark VI cabinet slots, with on-board LED status indicators, protection circuits and diagnostic interfaces. It can pair with EPDM modules to output 125VDC, supports simplex/dual-redundant configurations for bumpless power switching, making it a critical power guarantee component for generator excitation control, voltage stabilization and unit safety protection.

Core Functions

  1. Multiple Isolated Regulated Outputs: Converts, regulates and isolates system DC bus voltage into multiple isolated DC outputs (core 24VDC, 5VDC), providing clean and stable power for exciters, control loops, sensors, relays and sub-modules (EDCF/EDEX/EGDM).

  2. Multiple Electrical Safety Protections: Built-in overvoltage, overcurrent, short-circuit, undervoltage, reverse polarity and over-temperature protection, automatically cutting off outputs during faults to prevent power abnormalities from damaging excitation equipment and control systems.

  3. Electrical Isolation & Anti-Interference: ≥1500VAC isolation between input/output and channels, suppressing industrial site EMI to ensure clean power, stable signals and system safety.

  4. Fault Diagnostics & Status Indication: On-board LED indicators for real-time display of power normal, fault, overvoltage/overcurrent alarms, supporting remote system diagnostics and fast power fault location.

  5. Redundancy & Expansion Compatibility: Supports simplex/dual-redundant power configurations with automatic switching; pairs with EPDM modules to output 125VDC, meeting power supply requirements for C/M1/M2 triple redundant controllers.

  6. Industrial-Grade Reliable Design: Wide temperature range, anti-vibration, moisture/dust resistant, UL94 V‑0 flame retardant, adapting to harsh industrial environments in power plants, offshore platforms and hazardous areas (ATEX), supporting hot-swapping and online replacement.

Technical Specifications

  • Input Power: System DC bus supply, nominal 24–28VDC, range 18–32VDC

  • Output Power: Multiple isolated regulated outputs, core 24VDC (max 2A), 5VDC (max 10A); pairs with EPDM to output 125VDC

  • Isolation Voltage: ≥1500VAC between input/output, channel-to-channel isolation, strong anti-EMI capability

  • Protection Functions: Overvoltage, overcurrent, short-circuit, undervoltage, reverse polarity, over-temperature protection, automatic fault shutdown

  • Power Consumption: Typical 10W, max ≤15W

  • Temperature: Operating -20°C to +65°C; Storage -40°C to +85°C

  • Relative Humidity: 5%–95% (non-condensing)

  • Dimensions: Standard Mark VI PCB size, approx. 8×18.6×26.1cm; Weight approx. 1.0–1.14kg (2.2–2.5lb)

  • Mounting: Standard Mark VI cabinet slot installation, VME backplane compatible, hot-swappable, online maintenance supported

  • Protection Rating: IP20 (cabinet-mounted), UL94 V‑0 flame retardant, anti-vibration/anti-EMI design

  • Certifications: IEC 61508 SIL 2, CE, UL 61010-1, ATEX (hazardous location approved)

Typical Applications

  • Core power distribution/regulation for EX2100/EX2000 excitation systems in Mark VI/Mark VIe gas turbines and steam turbines

  • Power supply for exciters, excitation regulation loops, voltage/current sensors, control relays and EDCF/EDEX/EGDM sub-modules

  • Excitation system power guarantee for combined-cycle power plants, thermal power plants, petrochemical drive units and offshore platform generator sets

  • Isolated regulated power supply for C/M1/M2 triple redundant controllers, signal conditioning and actuators

  • Replacement of excitation power modules for legacy Mark VI/EX2000 system upgrades


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