Micro Ohmmeter DV Power RMO300A

The RMO-A series is a series of micro-ohmmeters that are widely used in industries such as circuit breaker manufacturing, commissioning, and maintenance. As portable test devices, devices in this series provide accurate and reliable contact resistance measurements of high-voltage circuit breakers, disconnecting switches, high-current bus bar joints, cable splices, and other high-current links.   
The RMO-A series consists of powerful electrical measurement tools that have a wide range of applications with the ability to accurately measure not only in factory environments but also in high-induction fields and substations. These micro-ohmmeters are precise measuring tools that generate a true DC ripple-free current with automatically regulated test ramps. During a test, the RMO-A devices ramp with increasing current before measuring and decreasing current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.   
From the RMO-A series, among the RMO300A, we offer the following micro-ohmmeters:  

• The RMO100A which generates current up to 100A  
• The RMO200A which generates current up to 200A 

The RMO-A measuring instruments have three separate test modes:   

• SINGLE Mode   
• CONTIN Mode   
• DTRtest Mode   

SINGLE MODE   

The RMO-A instrument generates a filtered (true ripple-free) DC current and outputs it in an automatically regulated current ramp. By slopping the current up and down, magnetic transients are virtually eliminated.   

CONTIN MODE   

RMO-A can generate DC currents up to 100 A continuously and 300 A up to 150 s.   

DTRtest MODE   

DTRtest menu is specially designed for resistance measurement of the dead tank circuit breakers. In this mode, the current transformer is saturated in order to get precise measurements. Detection of the saturated condition of the CTs is done by an advanced internal algorithm. Accordingly, the process of measurement parameters setting and testing in this mode is very simple and does not differ much from live tank circuit breaker testing.   

 RMO-A SERIES DESIGN   

The RMO-A series is a series of digital micro-ohmmeters that are designed and manufactured by DV Power. Its user-friendly interface and controls make it easy and intuitive to operate, while its durable construction ensures that it can withstand even the most demanding testing environments. With its compact design and portability, the RMO-A tool is a convenient digital micro-ohmmeter that can be used in the lab or in the field.   
The RMO-A is a reliable test instrument that can store up to 500 measurements in internal memory.  Free DV-Win software communicates with the RMO-A micro-ohmmeter via USB or RS232 interface. It allows you to run the test remotely from a PC, as well as to download test results, analyze them, and generate fully configurable test reports.   
In summary, the RMO-A series with its advanced technology is a state-of-the-art series of electronic measuring devices that provide precision and accuracy for a wide range of applications. These digital micro-ohmmeters are ideal choices for industries that require precise and consistent measurement of electrical resistance.