DS2020EXPSG3 - Exciter Power Supply Board

SPECIFICATIONS:

Part Number: DS2020EXPSG3
Manufacturer: General Electric
Series: EX2000
Product Type: Exciter Power Supply Board
Power Requirements: +5 V dc, 6 A
Number of input channels: 12
Number of outputs: 125 V dc
Power supply voltage: 28 V dc
Input Voltage: 12 V dc
Mounting Type: Chassis Mount
Technology: Surface mount
Operating temperature: 40 to 85°C
Size: 33.0 cm x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEI-100168

FUNCTIONAL DESCRIPTION:

DS2020EXPSG3 is an Exciter Power Supply Board manufactured and designed by General Electric as part of the EX2000 Series used in GE Excitation Control Systems. The EXPS provides the proper signals for measuring ac and dc input power. It also provides a current limiting action when the supply is energized from the station battery. A printed wiring board is identified by an alphanumeric part (catalog) number stamped on its edge. For example, the bulk power supply board is identified by part number: DS200EXPSG#ruu.

The DS2OOEXPS portion is the base number that identifies a printed wiring board, specifically the EXPS. The I and u digits are alphabetic characters that indicate the board revision level. The r digit reflects a functional change that would not be downward compatible. It is essentially a new catalog number. The II digits represent downward compatible revision levels. The G# identifies a group, which is a variation of a particular board.

CONFIGURATION:

• The entire bulk power supply must be removed to replace the EXPS board. Verify zero potential at all connections of the power supply assembly.

• Unplug lFTB, 1TB through 8TB, DCTB, VM2A, and VM2B connectors as required. Remove black and white wires in the CPS PTBl and PTB2 terminal board. Unplug ACPL.

• Loosen the four assembly mounting screws and carefully lift the power supply assembly out of the cabinet. Do not remove ACPL.

• Take the assembly to a workbench and remove four screws holding the plastic protective cover. Unplug DCPL, 3GDPL, and 4GDPL from EXPS board.

• Remove the old EXPS board and replace it with the new EXPS board. On the replacement (new) board, set JPl in the exact position as on the board being replaced (old board).

• The EXPS contains a manually moveable hardware jumper, identified by JPl. JPl connects the center tap of Tl secondary to the ground.

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FREQUENTLY ASKED QUESTIONS:

What is an Exciter Power Supply Board?

An Exciter Power Supply Board is a vital component in turbine control systems designed to provide regulated power to excitation systems in generators. Its primary role is to maintain consistent voltage levels, ensuring that the generator operates efficiently and reliably during various load conditions.

What are the primary functions of an Exciter Power Supply Board?

The Exciter Power Supply Board performs several key functions, including supplying stable and regulated power to the excitation system, managing voltage fluctuations, and enhancing the stability of generators during changes in load demand. This ensures optimal performance and reliability in power generation systems.

Where is the Exciter Power Supply Board used?

Exciter Power Supply Boards are widely used in power plants, industrial generators, and turbines. They play a crucial role in applications where precise control of generator excitation is essential to maintain efficiency and stability in energy production processes.