IS200EPDMG1B EXCITER POWER DISTRIBUTION MODULE

Part No.: IS200EPDMG1B
Manufacturer: General Electric
Country of Manufacture: United States(USA)
Product Type: Power Distribution Board
Series: EX2100

IS200EPDMG1B is an Exciter Power Distribution Module developed by GE under EX2100. It is

employed in the EX2100 Excitation Control to supply power to the exciter’s control, I/O, and protection

boards. It is located on the side of the Exciter Power Backplane (EPBP) and is powered by one or two 120 V

ac inputs in addition to the station battery’s 125 V dc output. A board-mounted terminal block (TB1) serves

as the entry point for all power supply inputs and filters them. In an external AC to DC converter, each ac

supply is rectified to 125 V dc (DACA). The resulting two or three dc voltages are connected together using

external diodes to provide the P125V and R125V dc source power supplies. These voltages are

nominally +62.5 V and -62.5 V to the ground and are center grounded.

IS200EPDMG1B

IS200EPDMG1B Features

• Through four of the holes on the board for mounting, the module is safety grounded and chassis ground. The
• external DACA#1 and DACA#2 are connected to the terminal block’s AC1 and AC2 by two 12-plug
• connections (JDACA1 and JDACA2), and the DACA outputs are then connected to the 125 V dc lines (P125 and R125).
• With the exception of the EXTB board, each individual power supply output to an exciter board is fused,
• equipped with an on/off toggle switch, and has a green LED indicator to indicate power availability.
• Three Exciter Gate Pulse Amplifier Boards (EGPA), Exciter Terminal Board (EXTB), and three Exciter Power
• Supply Modules (EPSM) feeding three controllers are all capable of receiving power from the outputs.
• Each output has its own connector, which is attached to the EPBP for distribution.