GE IS200EPSMG2A IS200EPSMG2AED | Power Supply Board

Core Function and System Role

The GE IS200EPSMG2A provides main system power for Mark VI turbine controls. Specifically, this board converts incoming AC voltage to regulated DC outputs. Moreover, it supplies 24 Vdc, 5 Vdc, and ±15 Vdc rails. The IS200EPSMG2AED variant includes enhanced filtering for dirty industrial grids.

Technical Specifications Overview

This power supply board accepts a wide range of AC inputs. The board operates from 120 Vac to 240 Vac at 47 to 63 Hz. Furthermore, it delivers 20 amperes on the main 24 Vdc output.

Parameter	Specification
Part Number	IS200EPSMG2A / IS200EPSMG2AED
Type	Power Supply Board / System Power Module
Input Voltage	120-240 Vac, 47-63 Hz
Input Current	6 A Maximum
Output 1 (24V)	24 Vdc ±5%, 20 A
Output 2 (5V)	5 Vdc ±3%, 10 A
Output 3 (±15V)	±15 Vdc ±3%, 2 A each
Total Output Power	550 W Maximum
Efficiency	>85% at Full Load
Hold-up Time	20 ms at Full Load
Connector Types	1 x Terminal Block (Input), 1 x Backplane Connector
Dimensions (W x H x D)	250 x 150 x 40 mm
Weight	1.45 kg
Onboard Energy Storage	4 x 2200 µF, 200V Capacitors

Connector Layout and Component Count

The board uses one terminal block for AC input connection. For instance, terminals L, N, and GND accept line, neutral, and ground wires. Meanwhile, a 96-pin backplane connector distributes DC outputs to other boards. The IS200EPSMG2AED adds an EMI filter stage on the AC input.

Energy Storage and Output Stability

This power supply includes large capacitance for hold-up during line drops. Specifically, four 2200 µF capacitors store energy for the main output. Therefore, the board maintains regulated outputs for 20 milliseconds after input loss. Additionally, onboard LED indicators show each output status. For example, green LEDs confirm proper 24V, 5V, and ±15V rails. A red LED warns you of input undervoltage or overload conditions.

Diagnostic Features and Fault Protection

The board continuously monitors each output for overcurrent conditions. Consequently, it shuts down the affected rail within 10 milliseconds. Moreover, the GE IS200EPSMG2A IS200EPSMG2AED includes thermal shutdown for overheating protection. This feature prevents damage from blocked cooling or fan failure. An onboard status relay reports any fault to the main controller.

Maintenance and Hot Replacement

You can replace this power supply without shutting down the turbine. Thus, mean time to repair remains under fifteen minutes. The board stores no configuration data locally. Therefore, you simply install the replacement and restore normal system power.

Industrial Applications

This power supply board works inside GE Mark VI control cabinets. For reliable GE system power, the IS200EPSMG2A and IS200EPSMG2AED deliver exceptional performance. They provide stable DC power for steam and gas turbine control electronics.