Technical Specifications

The GE IS200EPSMG2A converts DC link bus voltage into required voltages for EX2100 regulator control. This power supply module uses a buck regulator and a push-pull inverter design. The transformer provides high-voltage isolation between input and output.

General Specifications

Output Voltages

The IS200EPSMG2A supplies multiple output voltages to the regulator control system.

Module Design

The IS200EPSMG2A consists of two major sections.

Key Features

• High Voltage Isolation – Transformer provides isolation between input and control system

• EPSD Daughter Board – Includes IS200EPSDG_A exciter regulator power supply board

• Fuse Protection – EPSD adds fuse between regulator power source and buck regulator

• Increased Creepage – EPSD modifies power input path for higher voltage acceptance

EX2100 Regulator Control Application

The IS200EPSMG2A is used specifically in regulator control applications.

Related Modules Powered

The IS200EPSMG2A supplies power to these external modules.

Backplane Compatibility

Installation Guidelines

Follow these steps to install your General Electric IS200EPSMG2A module correctly.

1. Power Down System – De-energize all EX2100 control cabinet power sources.

2. Verify Backplane – Confirm correct backplane (ERBP or ERRB) is installed.

3. Insert EPSMG2 – Slide the IS200EPSMG2A into the designated slot.

4. Secure Module – Tighten retaining screws to backplane.

5. Connect EPDM – Ensure EPDM module supplies 125 VDC input.

6. Verify Daughter Board – Check EPSD board is properly mounted.

7. Check Connections – Confirm P1 and P2 connectors are fully seated.

8. Apply Power – Energize system and verify output voltages.

Do not exceed specified input voltage. The EPSD board provides fuse protection between the regulator power source and buck regulator.

Module Placement Notes

Package Contents (No Certificates or Warranty Terms)

Your shipment for product number IS200EPSMG2A includes the following items:

• 1 x GE IS200EPSMG2A Exciter Power Supply Module

• 1 x IS200EPSDG_A Exciter Regulator Power Supply Daughter Board (pre-mounted)

• 1 x Anti-static protective bag for storage

• 1 x Installation instruction sheet (printed)

Note: Backplane (ERBP or ERRB) and EPDM power distribution module are sold separately.

Frequently Asked Questions (FAQ)

1. What is the difference between EPSMG1 and EPSMG2 modules?
EPSMG1 modules are used in excitation control systems. EPSMG2 modules (including IS200EPSMG2A) are used in regulator control systems.

2. What input voltage does the IS200EPSMG2A require?
The IS200EPSMG2A converts the DC link bus voltage from the EPDM module. The EPDM typically supplies 125 VDC input.

3. Is the IS200EPSMG2A backward compatible with earlier revisions?
No. This A revision model is not backward compatible with earlier IS200EPSMG modules. Use only with compatible EX2100 systems.

4. What daughter board is mounted on the IS200EPSMG2A?
The IS200EPSDG_A Exciter Regulator Power Supply Daughter Board (EPSD) is mounted on this module.

5. What manual covers the IS200EPSMG2A installation?
Refer to GEH-6632 EX2100 Excitation Control User’s Guide or GEI-100462 for EPSMG module specific instructions.

6. What is the operating temperature range for this module?
The IS200EPSMG2A operates from -30°C to +65°C. This suits harsh industrial environments.

Why Choose This Model?

The General Electric IS200EPSMG2A offers reliable power conversion for EX2100 regulator control systems. Its buck regulator and push-pull inverter design provides efficient voltage conversion with high voltage isolation. The EPSD daughter board adds fuse protection and higher voltage acceptance capability. The multiple output voltages (+5, ±15, +24 VDC logic power; ±24, +70, ±55, and 20 VAC external power) support all regulator control functions. The -30°C to +65°C temperature range suits turbine generator environments. This A revision module represents the final functional version of the EPSMG2 design. Choose this IS200EPSMG2A for EX2100 regulator control systems in power generation applications, including steam turbines, gas turbines, and hydroelectric generators requiring exciter regulator power supplies.