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Part Number: IS200EPSMG1A
Manufacturer: General Electric
Country of Manufacture: United States(USA)
Series: Mark VI
Function: Exciter Power Supply Module
IS200EPSMG1A is an Exciter Power Supply Module developed by GE under Mark VI turbine Control System. The EX2100 Excitation Control System and the EX2100 Regulator Control both use this Exciter Power Supply Module (EPSM). EPSM Group 1 (EPSMG1) modules are used in the excitation control system, while EPSM Group 2 (EPSMG2) modules are used in the regulator control. The Exciter Regulator Power Supply Daughter board (EPSD) is mounted to the EPSMG2. The EPSM is made up of two major parts: a buck-regulator and a push-pull inverter. The buck-regulator converts the input voltage to an intermediate voltage of 50 V dc. This intermediate voltage is then fed into a push-pull inverter, which generates the necessary multiple output voltages. The push-pull inverter's transformer provides high-voltage isolation between the input voltage source and the output supplied to the control system.
EPSMG1 converts 125 V dc from the power distribution module (PDM) to the voltages needed for EX2100 excitation control. Each of the controllers M1, M2, and C is powered by three independent EPSMG1s. They have installed in the control cabinet's EPBPG, A Exciter Power Backplane (EPBP), which is located beneath the EBKPG A Exciter Backplane (EBKP). Power is transferred from the EPSMG1 to the EPBP via connectors P1 and P2 for cables to the EBKP and other boards. The EPSMG1 provides power to the control assembly backplane at +5 V dc, 15 V dc, and 24 V dc. External modules are also powered as follows:
EPSMG2 converts the dc link bus voltage into the voltages needed to control the EX2100 regulator. One EPSMG2 is installed in the ERBPH A Exciter Regulator Backplane in simplex systems (ERBP). In redundant systems, one EPSMG2 is installed in the ERBP (M1) and another in the ERRBH A Exciter Regulator Redundant Backplane (ERRB, M2/C). By increasing the creep and clearance, the EPSD mounted on EPSMG2 modifies the power input path, allowing EPSMG2 to accept higher voltages. It also acts as a fuse between the power source for the regulator (dc link) and the buck-regulator. The EPSMG2 provides the ERBP and ERRB with +5 V dc, 15 V dc, and 24 V dc. External modules are also powered as follows:
It is possible to replace a failed EPSMG1 while the exciter is running in a redundant excitation control system. You can leave the failed EPSMG1 in place and run the exciter on the remaining EPSMG1s. However, if a second failure in another control section occurs, the exciter will shut down. If you want to change the EPSMG1, follow the steps below. To replace the EPSMG1 in an online redundant control system.
WOC has the largest stock of Speedtronic EX2100 control spares. WOC is happy to assist you with any of your automation requirements. Please contact our staff by phone or email for pricing and availability on any parts and repairs.
FREQUENTLY ASKED QUESTIONS
What is IS200EPSMG1A?
IS200EPSMG1A is an Exciter Power Supply Module developed by GE under Mark VI turbine Control System.
For what purpose is Exciter Power Supply Module used?
It converts power from the EPDM board (125 VDC) into the voltages that the control system requires.
Which are the major parts of the component?
The EPSM is made up of two major parts: a buck-regulator and a push-pull inverter.
Which Capacitors are used in the module?
Axial electrolytic and high-voltage electrolytic capacitors are used.
How to obtain IS200EPSMG1A?
Contact WOC. World of Controls provides EX2100 and other GE turbine control system spare parts.