SRMP Electric Power Generation SRMP Generator Caterpillar

Illustration 1	g00874841
PMG Generator Wiring Diagram (CR1-C6) Diodes (CR7) Varistor (L1) Exciter Field (Stator) (L2) Exciter Armature (Rotor) (L3) Main Field (Rotor) (L4) Main Armature (Stator) (L5) Pilot Exciter Armature (PM) Permanent Magnet (R5) Resistor (RFA) Rotating Field Assembly (CT1) Optional Voltage Droop Transformer (T0, T1, T2, T3, T7, T8, T9) Generator terminals

Resistor (R5) is used on generators that have three diode rectifier blocks.

The Resistor Test consists of the following steps:

1. Disconnect one lead of resistor (R5) from the positive terminal of varistor (CR7).

2. Connect one test lead of the multimeter to each lead of the resistor.

3. Resistor (R5) should measure 27000 ohms (± 2700 ohms).