Description
GE IS210AEPSG1B — Exciter Power Supply Module
Product: IS210AEPSG1B, Exciter Power Supply Module
Manufacturer: GE (General Electric), part of the Mark VI / Mark VIe Speedtronic Turbine Control System family
Primary Application: A specialized regulated power supply module within GE’s Speedtronic control platform, designed to provide isolated, conditioned DC power to the static exciter or excitation system of a gas or steam turbine generator.
1. Core Overview & System Context
The GE IS210AEPSG1B is a critical component in the Mark VI(e) system architecture, specifically within the excitation control chain. The «EPS» in the part number stands for Exciter Power Supply (or Excitation Power Supply).
Key Function: It acts as a dedicated, high-reliability DC power source that converts the turbine control system’s auxiliary power into the clean, stable voltages required by the excitation system’s control electronics and firing circuits. Its reliable operation is essential for maintaining precise generator voltage and reactive power control.
2. Key Features & Functions
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Dual/Redundant Power Paths: As part of a TMR (Triple Modular Redundant) or fault-tolerant system, it is often deployed in redundant configurations to ensure continuous power to the exciter, even if one supply fails.
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Regulated DC Outputs: Provides one or more precisely regulated DC voltage outputs (e.g., +15V, -15V, +5V, +24V, +125V DC) needed by the Excitation Control Module (e.g., EX2100e) and the thyristor gate drive circuits.
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Isolation & Protection: Provides galvanic isolation between the noisy plant power source and the sensitive excitation control electronics. Includes protection features such as:
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Overvoltage protection
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Overcurrent/short-circuit protection
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Thermal shutdown
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Monitoring & Diagnostics: Reports its status (health, voltage levels, faults) to the Mark VIe Turbine Control Controller (TCC) and/or Excitation Controller via the system backplane or I/O network. Faults are annunciated on the operator interface (CIMPLICITY/TOOLBOXST).
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Hot-Swappable Design: In a properly configured redundant system, it can be replaced online without shutting down the turbine, maximizing availability.
3. Common Technical Specifications
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Input Power: Typically sourced from the unit’s 125 V DC control power bus or a dedicated 120 V AC supply.
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Output Power: Provides regulated DC outputs at specific voltages and current ratings required by the connected excitation system components.
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Form Factor: A single-slot VME board designed to plug into a Mark VIe IS200-series rack or an EX2100e exciter cabinet.
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Cooling: May require adequate airflow within the rack or cabinet.
4. System Integration
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Location: Installed in a Mark VIe I/O Pack dedicated to excitation control or directly within an EX2100e Excitation Control cabinet.
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Role in Excitation Loop: It is part of the power conversion chain:
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Plant AC/DC Power -> IS210AEPSG1B -> Clean, Regulated DC Power -> Excitation Controller & Gate Drive Circuits -> Thyristor Bridge -> Generator Field.
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Control System Interface: Communicates its status to the Mark VIe controller. A failure of this module would generate a critical alarm and could lead to an excitation system fault or generator trip.
5. Typical Applications
This module is used exclusively in GE turbine-generator sets equipped with Mark VI(e) control and static excitation systems:
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Gas Turbine Power Plants (Frame 6, 7, 9 series)
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Steam Turbine Power Plants
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Combined-Cycle Power Plants
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