Caterpillar HV Generator SR-4

- Remove generator outlet box cover. Visually inspect stator output leads

- Visually inspect stator output leads, protective sleeving and insulation for cracking or physical damage. (Same as 7500/9000 hour check)

- Check all exposed electrical connections for tightness

- Check transformers, fuses, capacitors and lightning arrestors for loose mounting or physical damage

- Check all lead wires and electrical connections for proper clearance and spacing

- Check insulation resistance to ground on all generator windings

C. Exciter and PMG stationary fields

- Remove generator outlet box cover. Visually inspect stator output leads

- Visually inspect stator output leads, protective sleeving and insulation for cracking or physical damage. (Same as 7500/9000 hour check)

- Check all exposed electrical connections for tightness

- Check transformers, fuses, capacitors and lightning arrestors for loose mounting or physical damage

- Check all lead wires and electrical connections for proper clearance and spacing

- Check insulation resistance to ground on all generator windings

C. Exciter and PMG stationary fields

Disassemble generator including rotor removal

Check insulation resistance to ground on Main rotating assembly

Check insulation resistance to ground on Main stator assembly

Check insulation resistance to ground on Exciter and PMG Stationary fields

Check insulation resistance to ground on Exciter armature assembly

Clean generator windings using compressed air and electrical solvent or de-greaser and high pressure hot water wash dependent upon severity of contamination

Dry windings to acceptable resistance levels

Generator Outlet Box Maintenance

Remove generator outlet box cover

Visually inspect stator output leads, protective sleeving and insulation for cracking or physical damage

Check all exposed electrical connections for tightness

Check transformers, fuses, capacitors and lightning arrestors for loose mounting or physical damage

Check all lead wires and electrical connections for proper clearance and spacing

Check insulation resistance to ground on main rotating assembly

Check insulation resistance to ground on main stator assembly

Operating temperatures on generator bearings

Operating temperatures on generator stator windings

Control panel voltmeter for proper stability and voltage output

Monitor power factor and generator loading during normal operation

Visual inspection of bearing seals for seepage

Inspect generator air filters for build up of contaminants

Clean or replace air filters as required every week

Sign off on the daily generator check