IS200EPSMG2A | General Electric Exciter Power Supply Module

GE IS200EPSMG2A EX2100 Exciter Power Supply Module — 125VDC Input, Multi-Voltage Output

The IS200EPSMG2A is an Exciter Power Supply Module (EPSM) for GE's EX2100 excitation control system. It converts 125 VDC EPDM input power into multiple regulated DC voltages for EX2100 controller and I/O modules, including 5 VDC, ±15 VDC, and +24 VDC for controllers, plus an isolated 70 VDC contact wetting supply for field devices. The module is mounted under the control rack in the EX2100 cabinet.

Key Specifications

• Manufacturer: General Electric / GE Energy
• Series: EX2100 Excitation Control
• Type: Exciter Power Supply Module (EPSM)
• EPDM Input: 125 VDC
• Controller Power Outputs: 5 VDC, ±15 VDC, +24 VDC (three independent supplies for C, M1, M2 controllers)
• EXTB/ECTB Output: Isolated 70 VDC for contact wetting
• External Module Outputs: 24 VDC to EDCF, EDEX, EGDM modules
• Weight: < 2 lbs (< 0.9 kg)
• Board Type: Printed Circuit Board
• Functional Revision: A
• Status: Legacy / Obsolete (discontinued by GE)

Model Number Breakdown

• IS200: Series and domestic original manufacture location
• EPSM: Exciter Power Supply Module
• G2: PCB protective coating and Group 2 EX2100 product grouping
• A: A-rated functional product revision

Architecture & Connectivity

• Controller Supplies: Three independent power units for C, M1, M2 controllers
• Simplex System: One EPSM installed in IS200ERBPH1A exciter regulator backplane (ERBP)
• Redundant System: One EPSM in ERBP (M1), another in IS200ERRBH1A redundant backplane (ERR B, M2/C)
• Compatibility: Pairs with EPDM module; not backward compatible with earlier EX2000 versions

Installation Guide

1. Power off the EX2100 system and verify lockout/tagout procedures.
2. Mount the IS200EPSMG2A under the control rack in the EX2100 cabinet.
3. Connect 125 VDC EPDM input power to the module terminals.
4. Wire 5/15/24 VDC outputs to C, M1, M2 controllers.
5. Wire 24 VDC outputs to EDCF, EDEX, EGDM external modules.
6. Wire isolated 70 VDC to EXTB/ECTB contact wetting circuits.
7. Power on and verify all output voltages via EX2100 diagnostics.

FAQ

Q: Is IS200EPSMG2A a 300kW power converter?
A: No. Some sources incorrectly describe it as a 300kW PCM with 380-480VAC input. The IS200EPSMG2A is an EPSM (Exciter Power Supply Module) with 125VDC input and low-voltage DC outputs (5/15/24/70VDC). The 300kW description applies to EX2100 PCM (Power Converter Module), not EPSM.

Q: What is the difference between EPSM and PCM in EX2100?
A: EPSM (IS200EPSMxxx) supplies control power to EX2100 controllers and I/O. PCM (Power Converter Module) is the high-power SCR bridge that delivers field current to the generator. They are completely different modules.

Q: Is this module backward compatible with EX2000?
A: No. IS200EPSMG2A is not backward compatible with EX2000 systems. It is designed specifically for EX2100.

Q: Can I use IS200EPSMG2A in simplex or redundant configurations?
A: Both. One EPSM for simplex; two EPSMs (one in ERBP, one in ERRB) for redundant operation.

Q: Is IS200EPSMG2A still in production?
A: No. It is a legacy/obsolete part. Verify availability with your supplier before ordering.

Selection Tips

• EX2100 control power supply: IS200EPSMG2A (125VDC input, multi-voltage output)
• Do not confuse with: EX2100 PCM (high-power field current converter) or generic 24VDC power supplies
• Verify system: Must be EX2100 (not EX2000 or Mark VIe)
• Check backplane: Requires IS200ERBPH1A (ERBP) or IS200ERRBH1A (ERR B)
• Order compatible EPDM module for 125VDC input power

Why Buy from Us?

• 100% Genuine GE / GE Energy product
• Professionally refurbished with full testing
• 12-month warranty on refurbished; up to 24 months on repairs
• Fast global shipping with ESD-safe packaging
• Technical support for EX2100 integration
• Bulk pricing for power plant and turbine OEMs

Reference: Petrospare EX2100 product documentation; TopBrandsPLC product number breakdown; Saul Bonnie EX2100 excitation control series. Specifications subject to change without notice. Verify system compatibility before ordering.