Description
Fluke 1555 FC Insulation Tester Repair
The Fluke 1555 FC is a 10 kV insulation resistance tester with Fluke Connect that applies selectable DC test voltages up to 10 kV and measures very high insulation resistance with PI/DAR diagnostics, for HV motors, cables, and apparatus. The hardworking part is the high-voltage generator, so that’s where most faults originate.
FlukeMeterRepair.com repairs and calibrates the Fluke 1555 FC for motor-shop technicians, electrical maintenance crews, and cable-testing contractors.
Common Fluke 1555 FC problems we fix
- Polarization-index (PI) / DAR faults — the timed diagnostic ratios not calculating, restored.
- HV generator recalibration — won’t reach the selected test voltage, repaired and recalibrated.
- Measurement-circuit / battery faults — readings drifting or battery degraded, repaired.
- Display, terminal, or battery faults — repaired.
- Won’t power on — power faults.
FAQs
My 1555 FC won’t reach test voltage — fixable? Yes. HV generator faults are the usual cause and they’re repairable, then verified so the tester delivers full rated voltage and your readings are valid, with a NIST-traceable certificate.
Is the measurement verified? Yes — test voltage and resistance are checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or request service.





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