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Resistance testers — also known as ohmmeters — are essential tools for verifying electrical safety and system reliability. From insulation resistance testers (megohmmeters) that measure extremely high resistances to low resistance ohmmeters (micro-ohmmeters) designed for precise low-ohm measurements, these instruments cover the full spectrum of resistance testing needs.
The MOM2 is specifically designed to measure the resistance of circuit breaker contacts, bus-bar joints, and other high-current links. This product prioritizes safety, ease of use, and versatility.
The recently introduced 1555 and the revamped Fluke 1550C insulation resistance testers present an advancement in digital insulation testing capabilities, extending up to 10 kV. This enhancement renders them exceptionally suitable for assessing a broad spectrum of high-voltage apparatus, including switchgear, motors, generators, and cables. Fluke's insulation testers are now equipped to execute the complete array of test voltages outlined in IEEE 43-2000. Coupled with an exceptional three-year warranty and a safety rating of CAT IV 600 V, they ensure robust performance.
Megger DLRO10X Ohmmeter: High-precision, fast resistance testing with 10A current and 700 test storage. Reliable, compact design for industrial performance and efficiency.
The Megger DLRO10X bring new standards to low resistance measurement. It's fully automatic instruments, selecting the most suitable test current, up to 10 A dc to measure resistance from 0.1 µΩ to 2000 Ω on one of seven ranges. For users who desire more control over the measurement process, DLRO 10X uses a menu system controlled by a two-axis paddle to allow manual selection of the test current. DLRO10X also adds real-time download of results and on-board storage for later download to a PC.
The Megger DLRO10 is a digital low resistance ohmmeter designed for use in the field or in the laboratory. This device is compact and portable, making it an ideal tool for testing low resistance connections and conductors.
Megger MOM2 BD-59092 240 A micro-ohmmeter. Used, function-tested. Includes red and black Kelvin clamps, AC adapter, straps, and hard carrying case for contact resistance testing up to 240 A.
Megger DLRO10HD Product Overview
Megger DLRO10HD Ohmmeter: Accurate 10A low-resistance testing in tough environments. Compact, durable, and battery-powered for ultimate portability.
Megger MIT515 5 kV insulation resistance tester with IR, Timed IR, PI and DAR modes, 10 TΩ max resistance, CAT IV 600 V rating, backlit LCD, rapid-charge Li-ion battery, and 3 m medium clip leadset.
Megger MIT515 5kV Insulation Resistance Tester: Accurate, reliable testing for high-voltage systems. Compact, durable design with advanced memory for precise results.
Fluke 1555 10kV Insulation Tester: High-voltage testing with 750+ tests per charge. Precision, reliability, and efficiency for all your insulation needs!
Megger S1-568 5kV Insulation Resistance Tester: Reliable, high-accuracy testing with 6-hour battery life. Ideal for utilities and technicians in demanding environments.
MIT520 insulation resistance tester is designed specifically for  the testing and maintenance of high voltage electrical equipment. The case is rugged and easy to carry, being made of tough polypropylene and achieving an ingress protection rating of IP65.Â
Resistance testers and ohmmeters play a vital role in electrical maintenance, troubleshooting, and compliance testing. By accurately measuring resistance across cables, windings, and connections, they help technicians identify weaknesses before they lead to failures, downtime, or safety hazards. Our lineup includes two primary categories:
These instruments apply high DC test voltages to measure very high resistance values, often in the megohm to teraohm range. As specialized ohmmeters, they are used to verify the integrity of insulation in cables, transformers, and motors, ensuring systems remain safe and dependable.
These testers use high test currents and four-wire measurement techniques to capture very low resistance values down to micro-ohms. Also referred to as low-resistance ohmmeters, they are essential for checking the quality of breaker contacts, busbar joints, welds, and grounding bonds where reliable, low-resistance connections are critical.
Together, these resistance testers and ohmmeters provide complete coverage for both high-resistance and low-resistance applications, making them indispensable tools for utilities, industrial plants, and field service technicians.