Status: DLRO10HD / DLRO100 / DLRO200 / DLRO600 / MJOLNER Current Production
Overview
Megger DLRO (Digital Low Resistance Ohmmeter) instruments measure contact resistance of circuit breaker contacts, busbar joints, cable splices, and other low-resistance connections with micro-ohm resolution. Test currents range from milliamps to 600 A depending on the model. The DLRO10HD provides 10 A maximum with handheld portability. The DLRO100 and DLRO200 series deliver up to 200 A for substation-class testing. The DLRO600 provides 600 A for the most demanding applications. The MOM2 and MOM690A micro-ohmmeters add specialized features for circuit breaker contact resistance testing. The MJOLNER delivers high-current DC resistance measurement for power transformers.
Specifications
| Parameter | Value |
|---|---|
| Test Current | 100 µA to 600 A (model dependent) |
| Resolution | 0.1 µΩ (DLRO200/600) |
| Resistance Range | 0.1 µΩ to 2500 Ω (model dependent) |
| Key Features | Four-wire Kelvin measurement, programmable test current, DualGround safety (DLRO100/200), continuous measurement, result storage, USB/Bluetooth |
Models We Repair
Select your model below to request a repair. If your exact model isn’t listed, choose the closest match — the evaluation and repair process is the same across all Megger Low Resistance Ohmmeters configurations.
| 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 |
Common Megger Low Resistance Ohmmeters Failures We Repair
- Current source circuit degradation from sustained high-current testing
- Kelvin measurement lead connector wear causing erratic readings
- Battery pack cell failure from heavy discharge cycling
- Internal shunt resistor drift affecting current measurement accuracy
- Display failure from field impact
- Communication interface faults (USB, Bluetooth, RS-232)
- DualGround relay contact wear on DLRO100/200 models
Our technicians perform component-level diagnostics on every Megger Low Resistance Ohmmeters unit. We don’t just replace boards — we identify and repair the specific failed components, saving you the cost of full module replacements when possible.
Calibration
Every Megger Low Resistance Ohmmeters repair includes NIST-traceable calibration. We verify all critical measurement and output functions against our reference standards and provide a detailed calibration certificate documenting measured performance against the manufacturer’s published specifications.
Who Uses Megger Low Resistance Ohmmeters?
The Megger DLRO / MOM / MJOLNER Micro-Ohmmeters and Low Resistance Ohmmeters are used by substation maintenance, circuit breaker testing, busbar joint verification, cable splice testing, transformer winding resistance, and utility field crews.
Our Repair Process
- Ship Your Instrument: Send your Megger Low Resistance Ohmmeters to our facility from anywhere in the US. We provide prepaid shipping labels on request.
- Free Evaluation: Our technicians perform a complete diagnostic assessment and provide a firm, no-obligation repair quote.
- Expert Repair: Upon approval, we perform component-level repair using OEM-grade parts.
- NIST-Traceable Calibration: Full calibration with documented results across all critical parameters.
- Return Shipment: Your instrument is securely packaged and returned with calibration certificate, repair documentation, and our 90-day warranty.
Request a Repair
Contact us for professional Megger Low Resistance Ohmmeters repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.
Email: info@junecompany.com | All repairs include a 90-day parts and labor warranty.
