Megger DLRO100HB 100A Portable Micro-Ohmmeter
The Megger DLRO100HB 100A Portable Micro-Ohmmeter delivers high current low resistance testing in a compact and portable design. It provides test currents up to 100A and measures resistance values from 0.1µΩ to 1.999Ω. The unit is designed for demanding work in substations, switchgear testing and production environments where accurate results are essential.
With its rechargeable lithium-ion battery, the Megger DLRO100HB 100A Portable Micro-Ohmmeter can complete up to 200 manual 100A tests or two continuous ten-minute tests at full output. The large clear LCD screen and backlit keypad make operation simple even in poor lighting conditions. In addition, the robust IP54 housing helps protect the instrument during field use.
Advanced Data Management
Internal memory stores up to 220 time and date stamped measurements for later review. Data can then be transferred through USB or Bluetooth for reporting and record keeping. The Megger DLRO100HB 100A Portable Micro-Ohmmeter also supports asset tagging when used with Megger’s PowerDB application on a compatible Windows tablet or smartphone.
Built for Flexible Testing
Remote operation improves safety by allowing users to control the instrument from a PC or laptop while working outside restricted areas. An optional clamp adds DualGround compatibility, which expands the range of applications and increases flexibility during testing. Together, these features help users work more efficiently during routine maintenance.
Engineers use the Megger DLRO100HB 100A Portable Micro-Ohmmeter to test circuit breakers, high voltage switchgear, aircraft bonding systems and railway equipment. Three operating modes including manual, automatic and continuous testing allow the user to adapt the instrument to different tasks. This flexibility makes it a valuable tool for both service engineers and manufacturing teams.
Supplied with essential accessories and supporting documentation, the instrument is ready for use straight from the case. Users can choose from standard CAT IV 600V lead sets or CAT IV 600V Kelvin lead sets depending on the application. The Megger DLRO100HB 100A Portable Micro-Ohmmeter combines portability, high current output and advanced data handling in one practical package.
Key Features
- Portable 100A low resistance ohmmeter weighing approximately 8kg
- Measures resistances from 0.1µΩ to 1.999Ω
- Rechargeable lithium-ion battery operation
- Stores up to 220 measurements with date and time stamps
- Integrated Bluetooth communication for wireless downloads
- USB connectivity for fast data transfer
- Remote operation using a PC or laptop
- Supports asset tagging through Megger PowerDB software
- Three user modes including manual, automatic and continuous testing
- Large clear LCD display with backlit keypad
- Suitable for use in low light environments
- DualGround compatible with optional clamp accessory
- Designed for switchgear, circuit breaker and bonding tests
- Compatible with both standard lead sets and Kelvin lead sets
Technical Specifications
| Manufacturer | Megger |
| Manufacturer material no. | 1004-953 |
| Instrument type | Portable micro-ohmmeter |
| Maximum test current | 100A |
| Resistance measurement range | 0.1µΩ to 1.999Ω |
| Power source | Lithium-ion rechargeable battery |
| Battery performance | Up to 200 manual 100A tests |
| Continuous operation | Two continuous 10 minute tests at 100A |
| Data storage capacity | 220 time and date stamped results |
| Communication interfaces | USB and Bluetooth |
| Remote control capability | Operation via PC or laptop through USB |
| Display type | Large LCD display |
| Keypad | Backlit keypad |
| Ingress protection rating | IP54 |
| Safety rating | CAT IV 600V AC and 500V DC |
| User operating modes | Manual, automatic and continuous |
| Weight | Approximately 8kg |
| Asset management | Compatible with Megger PowerDB application |
| DualGround capability | Optional with additional clamp |
| Recommended applications | HV switchgear, circuit breakers, railway systems, aircraft bonding and OEM compliance testing |
| Lead options available | Standard CAT IV 600V lead sets and CAT IV 600V Kelvin lead sets |
| Standard lead lengths | 5m, 10m and 15m options |
| Kelvin lead lengths | 5m, 10m and 15m options |
| Warranty | Not specified |
Comparison Table
| Feature | DLRO100EB | DLRO100XB | DLRO100HB |
|---|---|---|---|
| Li-ion battery | ✓ | ✓ | ✓ |
| DualGround | Option | Option | |
| Internal memory | ✓ | ✓ | |
| Remote operation | ✓ | ||
| Asset tagging | ✓ | ||
| Bluetooth | ✓ |
Document Downloads
What’s Included
- Megger DLRO100HB 100A Portable Micro-Ohmmeter
- Certificate of test
- Quick start guide
- Calibration certificate
- CD containing the user guide
- USB cable
- Mains lead
Please note that test leads are not supplied and must be ordered separately.

