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The Megger MOM690 Micro-ohmmeter with on-board test control is a powerful instrument designed for measuring the resistance of high-current contacts and other transmission elements.
Features microprocessor-based measurement, storage, and reporting. The built-in software enables users to carry out individual tests or an entire series of tests and store the results. Test results can be exported to a PC for further analysis and reporting with the optional MOMWin software.
The instrument automatically sets the measurement range, continuously measures resistances, and captures test results at a preset test current.
After testing a breaker with a CT mounted in its current circuit (such as dead tank and GIS circuit breakers), some standards recommend demagnetizing the CT. The MOM690's AC output accomplishes this task quickly and easily, and can also serve as a general-purpose current source.
Mainly used for resistance testing of high-voltage circuit breakers and disconnectors, as well as contact resistance testing of large-current contacts and other transmission equipment in high-voltage substations and industrial environments.
| Specification Category | Details |
|---|---|
| Core Measurement Function | Micro-ohmmeter (low resistance measurement) with integrated on-board test control |
| Resistance Measurement Range | 0 – 200 mΩ |
| Resistance Resolution | 1 μΩ |
| DC Current Output Range | 0 – 600 A (both 115V and 230V models) |
| Open-Circuit Voltage |
• 115V model: 5.2 V DC • 230V model: 9 V DC |
| Ammeter Range & Resolution | Range: 0 – 800 A; Resolution: 1 A |
| Measurement Accuracy |
• Current (100 – 800 A): ±1% of reading + 1 digit • Current (50 – 99 A): ±2% of reading + 2 digits • Resistance: Same as current accuracy (tied to test current) |
| AC Demagnetization Function | Built-in AC output for CT demagnetization (complies with relevant industry standards) |
| Power Supply | Universal input: 115 / 230 V AC, 50 / 60 Hz |
| Power Consumption |
• 115V model: 5980 VA • 230V model: 9660 VA |
| Data Management |
• On-board storage for single/multiple test results • Compatible with optional MOMWin software (for PC export, analysis, and reporting) |
| Physical Dimensions | 350 × 270 × 220 mm (13.8” × 10.6” × 8.7”) |
| Weight |
• Net weight (115V model): 24 kg (52.9 lbs) • Net weight (230V model): 23.7 kg (52.2 lbs) • Gross weight (with case/accessories): 38.9 kg (85.7 lbs) [115V]; 38.6 kg (85.1 lbs) [230V] |
Models: Megger MOM690 Micro-ohmmeter with on-board test control
Delivery information typically includes delivery times, shipping methods, packaging, etc., which may vary depending on the seller and the location of purchase.
