GE  151X1225DF01PC03RA – Power Conversion / Drive Regulation Board

GE  151X1225DF01PC03RA – Power Conversion / Drive Regulation Board

Power magnetics are used in the system to provide isolation, voltage transformation,

and impedance. These include:

The  isolation transformer feeds 3-phase ac input power to the Static Starter power

converters. The transformer provides isolation from the ac system bus and provides

the correct voltage and phasing to the static converters.

Optional ac line reactors are

available.

The dc link reactor is an air core inductor that provides inductance to smooth the

current delivered by the static power converters.

Various circuit breakers and motor operated disconnect switches are used in the

system to make the appropriate power connects required for a static start operation.

The 52SS is a circuit breaker used to connect the primary side of the LS2100

isolation transformer to the system auxiliary bus. Depending on the application,

either the Static Starter or the Customer DCS controls this breaker and it must be

closed during starting. It may optionally be left closed after the start is complete.

The 89SS is a motor operated disconnect switch used to connect the Static Starter

load inverter output bus to the generator stator. The MarkVI controls this switch and

it must be closed during starting and opened after the start is complete.

The 52G is an optional circuit breaker used to connect the generator stator to the

system bus. The Mark VI Turbine Control controls this breaker and it must be open

during startup.

Cabinets

The enclosure is painted

ANSI-70 light gray.

The Static Starter is supplied in a factory assembled and tested, freestanding

enclosure. The isolation transformer, dc link inductor, and heat exchanger are

supplied separately from the drive enclosure. The Static Starter is supplied in a

NEMA Type 1 ventilated enclosure for indoor mounting. The enclosure has a rigid

steel frame enveloped by sheet steel with a minimum 12-gauge thickness.

Control Cabinet

The control cabinet has two front access hinged doors held in the closed position

with a three-point latch and a handle that can be padlocked. Located inside the

control cabinet are:

• Control power circuit breaker

• Control power transformer and power supply

• VME card rack

• Panel mounted relays

• I/O terminal boards

• VersaMax I/O modules

• Customer terminal boards