The Fluke 1503 is a compact insulation resistance tester for start-up checks, routine maintenance, and quick fault-finding on electrical insulation:
- Motor winding insulation testing before and after maintenance
- Cable insulation resistance checks on MV and LV feeders
- Transformer winding insulation verification
- Switchboard bus insulation spot checks
- Generator stator insulation testing during outages
- Control panel wiring insulation pre-commissioning tests
- Preventive maintenance programmes on rotating plant
- Fault location on aged or damaged insulation systems