SPECIFICATIONS:
Part Number: IS200EPSMG2A
Manufacturer: General Electric
Series: EX2100
Product Type: Exciter Power Supply Module
Repair: 3-7 Day
Weight: 2 lbs
Size: 15.9 cm high x 17.8 cm
Operating Temperature: -30 to +65°C
Country of Origin: United States
Availability: In Stock
Manual: GEI-100462A

FUNCTIONAL DESCRIPTION:

IS200EPSMG2A is an Exciter Power Supply Module Manufactured and designed by General Electric as part of the EX2100 Series used in the GE Excitation Turbine Control System and the EX2100 Regulator Control. EPSM Group 1 modules (EPSMG1) are used in the excitation control system and EPSM Group 2 modules (EPSMG2) are used in the regulator control. EPSMG2 includes an IS200EPSDG_A Exciter Regulator Power Supply Daughter board (EPSD) mounted to it. The EPSM is comprised of 2 major sections, a buck regulator and a push-pull inverter. The buck-regulator converts the input voltage to a 50 V dc intermediate voltage. This intermediate voltage is then applied to a push-pull inverter to create the required multiple output voltages. The transformer used in the push-pull inverter provides high-voltage isolation between the input voltage source and the output supplied to the control system.

EX2100 EXCITATION CONTROL SYSTEM APPLICATION:

EPSMG1 converts 125 V dc from the power distribution module (PDM) into the voltages required for the EX2100 excitation control. Three independent EPSMG1s supply power to each of the controllers M1, M2, and C. They are mounted in the IS200EPBPG_A Exciter Power Backplane (EPBP) located below the IS200EBKPG_A Exciter Backplane (EBKP) in the control cabinet. Connectors P1 and P2 carry power from the EPSMG1 to EPBP for cables to EBKP and other boards. The EPSMG1 supplies +5 V dc, ±15 V dc, and +24 V dc to the control assembly backplane. Power is also supplied to external modules as follows:

±24 V dc to power the fans, de-excitation module, crowbar module, ground detector module, and field voltage/current module.
Isolated +70 V dc for contact wetting to the terminal boards.