Status: Megger low resistance ohmmeter repair covers the current DLRO10HD, DLRO100, DLRO200, DLRO600, and MJOLNER lines plus earlier DLRO and MOM models still in field service. We repair and calibrate all of them.
Common Megger Low Resistance Ohmmeter Problems We Fix
- Test current low or won’t reach rating — current source circuit degradation from sustained high-current testing
- Readings erratic or won’t settle — Kelvin measurement lead/connector wear
- Won’t charge or hold a charge — battery pack cell failure from heavy discharge cycling
- Current measurement reads wrong — internal shunt resistor drift
- Display blank or damaged — failure from field impact
- Won’t download results — USB, Bluetooth, or RS-232 interface fault
- DualGround mode not working — relay contact wear on DLRO100/200 models
Don’t see your exact problem? We repair all Megger low resistance ohmmeter faults — email us and describe what’s happening.
Megger Low Resistance Ohmmeter Models We Repair
| Model | Description | Service |
|---|---|---|
| Megger DLRO600 | 600 A low resistance ohmmeter | Request Repair |
| Megger DLRO200 | 200 A micro-ohmmeter | Request Repair |
| Megger DLRO200-EN | 200 A micro-ohmmeter | Request Repair |
| Megger DLRO-H200 | 200 A handheld micro-ohmmeter | Request Repair |
| Megger DLRO100E | 100 A low resistance ohmmeter | Request Repair |
| Megger DLRO100EB | 100 A micro-ohmmeter | Request Repair |
| Megger DLRO100H | 100 A handheld micro-ohmmeter | Request Repair |
| Megger DLRO100HB | 100 A handheld micro-ohmmeter | Request Repair |
| Megger DLRO100HX | 100 A micro-ohmmeter | Request Repair |
| Megger DLRO100XB | 100 A low resistance ohmmeter | Request Repair |
| Megger DLRO10HD | 10 A handheld low resistance ohmmeter | Request Repair |
| Megger DLRO10HDX | 10 A handheld DLRO | Request Repair |
| Megger DLRO10 | 10 A low resistance ohmmeter | Request Repair |
| Megger DLRO2 | 2 A portable low resistance ohmmeter | Request Repair |
| Megger MJOLNER | High-current DC resistance micro-ohmmeter | Request Repair |
| Megger MOM690A | Circuit breaker micro-ohmmeter, 690 A | Request Repair |
| Megger MOM2 | Circuit breaker micro-ohmmeter (multiple configs) | Request Repair |
| Megger BT51 | Portable low resistance ohmmeter | Request Repair |
| Megger 247000/247001/247002 | Legacy low resistance ohmmeters | Request Repair |
How to Send In Your Megger Ohmmeter
- Tell us what’s wrong. Email us or submit a service request with your model and the problem.
- Ship it to us. Send your instrument from anywhere in the US — we provide prepaid shipping labels on request.
- Get a firm quote. We evaluate it and send a no-obligation repair quote. No work is done until you approve.
Email: info@junecompany.com | All repairs include NIST-traceable calibration and a 90-day parts-and-labor warranty.
Frequently Asked Questions
How much does Megger low resistance ohmmeter repair cost?
Repairs start with a flat evaluation fee that’s credited toward your repair cost. After we diagnose the instrument, you get a firm quote before any work begins — no surprises.
How long does the repair take?
Most repairs are finished within 5–10 business days of arrival, with expedited turnaround available if you need it back fast. High-current DLRO600 and MOM rebuilds can run longer — we’ll tell you up front with the quote.
My DLRO won’t reach its rated test current — can you fix it?
Yes. Current-source degradation that keeps the unit from delivering its full 10, 100, 200, or 600 A is one of the most common faults, and it’s repairable, then verified against our reference standards so the instrument hits rated current again.
My readings are erratic or jump around — is that repairable?
Yes. Most erratic low-resistance readings trace to Kelvin lead and connector wear or measurement-circuit drift, both of which we repair and recalibrate so four-wire readings are stable and repeatable.
My micro-ohmmeter won’t hold a charge — can you replace the battery and service it?
Yes. Battery pack cell failure from heavy discharge cycling is common on these field instruments, and we replace the pack and check the charging circuit so it runs a full day again.
My readings are out of spec — can you recalibrate and certify it?
Yes. Every repair includes recalibration against our reference standards, and the instrument comes back with a NIST-traceable calibration certificate documenting measured performance.
What if my exact model isn’t listed?
We service the full DLRO, MOM, and MJOLNER range plus the legacy 247000-series ohmmeters. If your model isn’t in the table, pick the closest match or email us — the process is the same. Crews testing contact resistance usually check insulation on the same gear, so we also handle Megger insulation tester repair.
Who uses Megger low resistance ohmmeters?
Substation maintenance crews, circuit breaker testing teams, and utility field crews rely on the DLRO and MOM micro-ohmmeters for contact resistance, busbar joints, and cable splices, while the high-current MJOLNER handles transformer winding resistance. For full manufacturer details, see Megger’s low resistance testing page.
