Megger MOM2 Micro Ohmmeter

The Megger MOM2 Micro Ohmmeter is a compact, handheld, high-current low-resistance tester specifically engineered for precise measurement of contact resistance in high-voltage and high-current electrical systems. Designed for field portability without compromising performance, the MOM2 delivers powerful test current output in a lightweight, battery-powered instrument ideal for utility, industrial, and substation environments.

Utilizing advanced ultra-capacitor technology, the MOM2 is capable of generating high DC test current (up to approximately 220–240 A depending on configuration) to accurately measure extremely low resistance values from micro-ohms up to milliohms. This ensures reliable assessment of circuit breaker contacts, busbar joints, disconnect switches, grounding connections, weld joints, and other critical conductive connections where low resistance is essential for safe operation.

A key feature of the MOM2 is its DualGround testing capability, which allows both sides of the test object to remain grounded during measurement. This significantly improves operator safety, reduces setup time, and simplifies field testing procedures—especially in high-voltage substations where grounding is mandatory.

Despite its powerful output, the MOM2 weighs approximately 1 kg, making it one of the most portable high-current micro-ohmmeters available. Its rugged housing is designed to withstand demanding field conditions, while the intuitive interface ensures quick operation with minimal training.

The instrument features:

High-current output for stable and accurate low-resistance measurement
Auto-ranging measurement capability
Digital display with clear, easy-to-read results
Rechargeable battery operation for true field mobility
Bluetooth communication for data transfer and reporting
Compliance with relevant IEC and IEEE standards

The Megger MOM2 is an ideal solution for preventive maintenance, commissioning, and troubleshooting applications where precise low-resistance measurement is critical. It combines portability, safety, and high-current performance in a single compact instrument, making it a trusted tool for electrical engineers and maintenance professionals worldwide.

Specification

Measurement Performance

Resistance Measurement Range: approx. 1 µΩ – 1000 mΩ
Test Current: up to approx. 220 A – 240 A DC (dependent on model/condition)
Measurement Method: High-current DC micro-ohm measurement with auto-ranging
Accuracy: High precision for low resistance measurement suitable for contact resistance testing

Test & Safety Features

DualGround Testing: Allows both ends of the device under test to remain grounded during measurement for enhanced operator safety
High-Current Source: Ultra-capacitor based output provides stable and repeatable current for consistent results
Overload Protection: Designed to withstand test spikes and protect the instrument

Display & User Interface

Digital Display: Clear numerical readout with status indicators
User Controls: Simple button interface for test start/stop and mode selection
Auto-Ranging: Automatically selects the best measurement range

Connectivity & Data Handling

Bluetooth Communication: Wireless connection to PC or mobile software for data transfer and reporting
Data Logging: Internal capture of test results for later analysis (varies by software integration)
Software Compatibility: Compatible with Megger PC analysis/reporting software

Power & Battery

Battery Type: Rechargeable battery pack (integrated)
Battery Life: Multiple test cycles per charge (varies by usage conditions)
Charging: Fast recharge capability via supplied charger

Physical & Environmental

Weight: Lightweight (approx. ≈ 1 kg) for true portability
Dimensions: Compact, rugged handheld form factor
Operating Temperature: Suitable for field use (typical range approx. –10 °C to +50 °C)
Environmental Protection: Designed for industrial field environments

Standards & Compliance

Complies with applicable IEC and IEEE standards for low-resistance testing
Built to meet industry safety requirements for electrical test equipment

Applications

Contact resistance measurement on circuit breaker contacts
Busbar, switchgear, and connector resistance evaluation
Commissioning and maintenance testing
Quality assurance and inspection tasks
Ground connection resistance verification

Micro Ohmmeter 240A

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