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The RMO-E protective bonding tester is designed and ideal for testing the protective bonding (grounding) of equipment following the standard IEC 61010-1. Also, they can measure the resistance of high, middle, and low voltage circuit breakers, high-current bus bar joints, cable splices, and welding joints. The instruments accurately measure not only in factory environments but also in high-induction fields and substations.
Both models generate a true DC ripple-free (less than 1 %) current with automatically regulated test ramps. During a test, the protective bonding testers automatically generate increasing currents before measuring and decreasing currents after the measurement. Consequently, this significantly decreases magnetic transients and ensures great accuracy.
These instruments can store up to 500 measurements in the internal memory and have a built-in thermal printer available as an option.
DV Win software communicates with the RMO-E earth resistance meter via USB or RS232 interface. It allows a user to run the test remotely from a PC, as well as to download test results, analyze and generate fully configurable test reports.
The RMO-E series contains two models, RMO60E and RMO100E. The main difference between these two models is in the maximal test current:
Protective bonding testing ensures that fault currents can safely flow through grounding and bonding conductors. Proper bonding reduces electrical hazards and helps maintain compliance with safety standards.
The RMO-E Series can test protective bonding conductors, grounding systems, switchgear connections, busbar joints, cable joints, welded connections, circuit breaker contacts, and other low-resistance electrical connections.
Depending on the model, the RMO-E Series can generate high DC test currents suitable for accurate micro-ohm resistance measurements in demanding field and industrial applications.
High test currents help overcome contact resistance and electrical noise, resulting in more accurate and repeatable measurements of extremely low resistance values.
Yes. The RMO-E Series uses the four-wire Kelvin measurement principle, eliminating errors caused by test lead resistance and improving measurement accuracy.
Yes. The instrument is commonly used to verify the condition and continuity of grounding and earthing conductors in substations, industrial facilities, and electrical installations.
Yes. The RMO-E Series is designed for protective bonding and continuity testing applications that support compliance with industry and safety standards.
Yes. The instrument is widely used in substations for testing grounding connections, busbar joints, switchgear connections, and other critical low-resistance paths.
Elevated resistance values can indicate loose joints, corrosion, damaged conductors, poor welds, or deteriorated electrical connections that require maintenance.
Yes. The instrument offers automated measurement functions that simplify testing and improve efficiency during routine inspections and commissioning activities.
Yes. Test results can be stored and transferred to DV Power software for detailed analysis, trending, documentation, and report generation.
Protective bonding testers are widely used in power utilities, substations, industrial plants, renewable energy facilities, transportation infrastructure, and electrical maintenance services.
It helps verify that protective conductors can safely carry fault currents, reducing the risk of electric shock, equipment damage, and unsafe operating conditions.
The RMO-E Series combines high test current capability, Kelvin measurement accuracy, portability, and advanced reporting functions, making it an efficient solution for protective bonding and low-resistance testing.
