UPS 250, UPS 300, UPS 500, UPS 600, UPS 750 and UPS 900 Uninterruptible Power Supply Caterpillar


Interface Board - Remove and Install - Static Switch Interface Board

Usage:

UPS 250 APZ





Illustration 1g00808758

Static Switch Driver Board

(1) "J2 C IGBT Gate Drive"

(2) "J3 C' IGBT Gate Drive"

(3) "J4 B IGBT Gate Drive"

(4) "J5 B' IGBT Gate Drive"

(5) "J6 A IGBT Gate Drive"

(6) "J8 A' IGBT Gate Drive"

(7) "J9 External Thermistor"

(8) "J7 APC I/O"

(9) "J7 +24V Power In"




Illustration 2g00669719

(10) Static Switch Driver Board

Removal Procedure

  1. Place the system in bypass mode by turning the keyswitch to the Bypass position.

  1. Isolate the system from the load by closing the bypass circuit breakers.

  1. Open the circuit breaker for the output of the system.

  1. Open the AC circuit breaker for the input of the system.

  1. Allow the capacitor banks to bleed down for approximately 5 minutes.

    Note: When the flywheel is spinning, the following components are energized: the bus, the armature leads and the fuses. Accomplish the procedure as quickly as possible. During the procedure, the rotor is spinning on the bottom bearing.

  1. Label all the input wires and all of the output wires.

  1. Disconnect the "+24V POWER" connector from terminal "J7" (9) .

  1. Disconnect the "APC I/O" connector from terminal "J1" (8) .

  1. Disconnect the "External Thermistor" connector from terminal "J9" (7) .

  1. Disconnect the "A'" connector from terminal "J8" (6) .

  1. Disconnect the "A" connector from terminal "J6" (5) .

  1. Disconnect the "B'" connector from terminal "J5" (4) .

  1. Disconnect the "B" connector from terminal "J4" (3) .

  1. Disconnect the "C'" connector from terminal "J3" (2) .

  1. Disconnect the "C" connector from terminal "J2" (1) .

  1. Remove four mounting screws. Remove the board.

Installation Procedure

  1. Install the board and the four mounting screws.

  1. Connect the "C" connector to terminal "J2" (1) .

  1. Connect the "C'" connector to terminal "J3" (2) .

  1. Connect the "B" connector to terminal "J4" (3) .

  1. Connect the "B'" connector to terminal "J5" (4) .

  1. Connect the "A" connector to terminal "J6" (5) .

  1. Connect the "A'" connector to terminal "J8" (6) .

  1. Connect the "External Thermistor" connector to terminal "J9" (7) .

  1. Connect the "APC I/O" connector to terminal "J1" (8) .

  1. Connect the "+24V POWER" connector to terminal "J7" (9) .

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