Description
Megger BM25 Insulation Tester Repair
The BM25 is a legacy 5 kV insulation resistance tester — a rugged, long-serving instrument still found across utilities and industrial plants for high-voltage insulation testing. As older HV equipment, the faults are aging faults: the high-voltage generator and the range/measurement circuitry showing years of field service.
June Company repairs and calibrates the BM25 for crews keeping a proven legacy Megger in service.
Common BM25 problems we fix
- Won’t reach test voltage — HV generator aging on a long-serving unit, repaired so it delivers full rated output again.
- Erratic or drifting readings — measurement-circuit aging, recalibrated for stable insulation-resistance values.
- Range selector intermittent — rotary-switch contact wear, a common legacy fault, cleaned or replaced.
- Guard terminal faults — guard-circuit damage.
- Won’t power up reliably — power and connector faults from age.
FAQs
It’s an old BM25 — still worth fixing? Yes. These are rugged instruments with plenty of life left; a repair keeps it in service for far less than replacement.
Can you calibrate and certify it? Yes — recalibrated against our reference standards with a NIST-traceable certificate.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.
Related Megger repairs
We service 186 Megger instruments. See all Insulation Tester Repair.
Shipping & Returns
Packing your equipment. You are responsible for packaging equipment adequately for transit. We strongly recommend the original manufacturer’s case, or double-boxing with at least two inches of shock-absorbing material on all six sides. We return your equipment in the packaging it arrived in, so please send it in packaging that will survive the return trip as well. If your packaging is damaged or inadequate for the return, we will substitute suitable packaging and may charge the cost of materials.
Insurance. Equipment is not insured by June Company while in transit. We strongly recommend insuring your shipment for its full replacement value.
Risk of loss. Risk of loss remains with you until your equipment is received at our facility, and transfers back to you when your repaired unit is delivered to the carrier (F.O.B. shipping point). June Company is not responsible for equipment lost, delayed, misdelivered, or damaged in transit, in either direction.
Return label. A prepaid and preprinted return shipping label should be included with your shipment. If one is not included, we will provide one.
Transit damage. Damage occurring in transit is the responsibility of the carrier. It is not a warranty defect and is not covered by the 90-day repair warranty. Any claim must be filed by you with the carrier; we will supply photographs and documentation to support it at no charge.
Full details: Terms & Conditions, Section 6 · Return Policy