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The RMO-EH, battery-powered, and handheld micro-ohmmeter is the unique solution on the market manufactured for low (mΩ) resistance measurement. It is designed to provide fast, repeatable, and accurate measurements, where non-inductive resistance is checked during factory, maintenance, and commissioning inspections or testing in high-induction field environments. It is ideal for electrical substations and other facilities in which the availability of power supply is limited or when the lightweight, handheld, and easily portable test set with long test leads is required.
It provides a maximum of 10 A test current, and test leads even up to 200 m (on reels). It has a very user-friendly interface (1-click test), which is achieved with an intuitive keyboard, menu design, and remote-control probe with a test button. The weight of the RMO-EH is less than 1 kg.
The RMO-EH device can be used for various applications, such as:
The RMO-EH Series is a handheld micro-ohmmeter designed for electrical safety testing and lightning protection system verification in wind turbines. It performs precise low-resistance measurements of bonding connections, grounding conductors, lightning receptors, and down-conductor paths.
Wind turbines are frequently exposed to lightning strikes. Regular testing helps verify the continuity and integrity of lightning protection paths, ensuring that lightning currents can be safely conducted to ground.
The RMO-EH Series can test lightning receptors, down conductors, bonding connections, grounding conductors, welded joints, grounding terminals, and other low-resistance electrical connections within wind turbine structures.
A micro-ohmmeter measures extremely low resistance values with high accuracy. It is commonly used to verify electrical continuity and detect deteriorated connections that may not be visible during visual inspections.
Low-resistance measurements help verify that lightning current can travel safely through the intended path. Increased resistance may indicate corrosion, loose connections, damaged conductors, or degraded bonding points.
Yes. Elevated resistance readings can indicate damaged, corroded, or partially broken conductors within the lightning protection system.
Yes. The instrument is specifically designed for field testing and maintenance of wind turbine lightning protection systems and electrical safety circuits.
Yes. The instrument can verify the continuity and integrity of grounding and bonding conductors, helping ensure compliance with maintenance and safety requirements.
Yes. The four-wire Kelvin measurement principle eliminates errors caused by test lead resistance and ensures highly accurate low-resistance measurements.
By identifying defective bonding connections and lightning protection paths, the instrument helps reduce the risk of equipment damage and improves overall turbine protection against lightning events.
Yes. The compact handheld design allows technicians to easily carry the instrument while working inside turbine towers, nacelles, and other confined areas.
Yes. In addition to wind turbines, the instrument can be used for bonding and continuity testing in industrial facilities, electrical installations, grounding systems, and renewable energy projects.
Testing intervals depend on maintenance programs, industry standards, environmental conditions, and turbine manufacturer recommendations. Periodic inspections are generally recommended.
Yes. Test results can be recorded and used for maintenance documentation, trending analysis, and compliance reporting.
The RMO-EH Series combines portability, high measurement accuracy, rugged field design, and fast testing procedures, making it an ideal solution for wind turbine lightning protection and electrical safety verification.
