The DVPower RMO-H1 is a portable, battery-powered micro-ohmmeter designed to perform very low-resistance contact measurements in manufacturing, commissioning, and maintenance applications for electrical equipment. This compact and lightweight instrument (approximately 0.95 kg) generates a regulated, ripple-free test current of up to 100 A DC, allowing for precise determination of resistance in circuit breakers, disconnect switches, busbar joints, and cable splices. Thanks to the 4-point Kelvin measurement principle, the RMO-H1 delivers reliable results with a measurement range from 0.1 μΩ to 3000 mΩ and high accuracy, even in environments with strong electromagnetic induction. The unit features internal storage with a capacity for up to 1000 measurements and communicates via Bluetooth with the DV-Win software to download, analyze, and generate technical reports.
Frequently Asked Questions
What is the DVPower RMO-H1, and what is it used for?
The RMO-H1 is a battery-powered handheld micro-ohmmeter designed to measure the contact resistance of non-inductive objects, such as switches, disconnectors, and joints, during the manufacturing, commissioning, and maintenance phases of electrical equipment.
What is the test current range, and what does this mean for the measurement?
The RMO-H1 generates an adjustable test current ranging from 1 A to 100 A DC, enabling highly accurate measurements within the typical resistance range of low-resistance contacts and joints, thereby reducing the effects of magnetic transients during measurement.
What is the measurement range and resolution of the RMO-H1?
This micro-ohmmeter has a measurement range of 0.1 μΩ to 3000 mΩ with a minimum resolution of 0.1 μΩ, allowing it to detect very small variations in resistance that can be critical to the performance of electrical contacts.
How are the measurement results handled and analyzed?
The results are stored internally (up to 1,000 measurements with date and time stamps) and can be downloaded to a PC via Bluetooth using the DV-Win software, which allows you to analyze the data, compare measurements, and generate customizable reports for technical documentation.
What are the typical applications of the RMO-H1 in electrical testing?
The RMO-H1 is commonly used to measure the contact resistance of medium- and high-voltage circuit breakers, disconnect switches, high-current busbar joints, and cable joints, both in high-induction-field environments (such as substations) and during factory testing or power grid maintenance.
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