Megger DLRO100H Micro-Ohmmeter
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Megger DLRO100H
The Megger DLRO100H Micro-Ohmmeter is a high-performance, digital low resistance ohmmeter designed for precise measurement of low resistance values across a wide range of industrial and field applications. This versatile instrument is capable of delivering up to 100 A test current, making it ideal for tasks that require high current, low resistance testing, such as checking circuit breaker contacts, busbar joints, and other critical connections where accuracy is essential.
In Manual test mode, the user can begin the test procedure after ensuring the probes are in contact with the test object. Pressing the TEST button will illuminate the TEST lamp, and the instrument will perform a single test to measure the resistance of the object. In Auto mode, the user selects the desired current, connects the current test leads, and the test will automatically start as soon as the potential leads are connected. To repeat the test, simply disconnect and reconnect the potential probes.
Megger DLRO100H Key Features
- CAT IV 600 VAC / 500 VDC for safe operation
- Lightweight 100 A battery powered unit for portability
- High noise immunity for stable readings
- Smooth DC Output for circuit breaker testing
- IP54 for protection against dust and moisture whilst testing
- Save, download and delete results (100X/H variants)
- Remote operation, Bluetooth® & asset/result tagging (100H variants)
specifications
Megger DLRO100H Specifications
| Specification | Details |
| Measurement Range | 0.1 μΩ – 1.999 Ω |
| Resolution | 0.1 μΩ |
| Noise Rejection | Differential 100 mV @ 50-60 Hz on Test Leads |
| DC Output | Smooth DC |
| IP Rating | IP54 (Lid open) / IP65 (Lid closed) |
| Operating Temperature Range | -20°C to 50°C |
| Storage Temperature Range | -30°C to 70°C |
| Humidity | <85% R.H. non-condensing |
| Battery Life | 200 single 100 A tests or up to 2x 10 minutes continuous 100 A output |
| Battery Type | User-replaceable Li-ion battery pack |
| Battery Charge Time | Full charge in 2.5 hours from flat |
| Maximum Output Voltage | 2 V (battery), 3 V (AC) |
| EMC Compliance | IEC61326-1 |
| Safety Compliance | IEC61010 |
| Safety Category | CAT IV 600 VAC / 500 VDC up to 2000 m, CAT IV 300 V up to 4000 m |
| Dimensions | 400 x 300 x 200 mm |
| Weight | 7.0 kg (AC Only), 7.9 kg (with Battery) |
| Accuracy (Current Setting & Resistance Range) | |
| 50 – 110 A, 0 – 100.00 mΩ | Typical ± (0.2% + 0.2 μΩ), Max. ± (0.2% + 0.8 μΩ)* |
| 11 – 49 A, 10 μΩ – 100.00 mΩ | Typical ± (0.2% + 0.5 μΩ), Max. ± (0.2% + 2.0 μΩ)* |
| 10 A, 10 μΩ – 1000.0 mΩ | Typical ± (0.2% + 1.0 μΩ), Max. ± (0.2% + 2.5 μΩ)* |
| Operational Uncertainty in Harsh Conditions | |
| 50 – 110 A, 0 – 100.00 mΩ | ± (0.0% + 0.0 μΩ) |
| 11 – 49 A, 10 μΩ – 100.00 mΩ | ± (0.0% + 1.0 μΩ) |
| 10 A, 10 Ω – 1000.0 mΩ | ± (0.1% + 2.0 μΩ) |
Datasheet
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