{"id":4057,"date":"2022-02-26T11:49:50","date_gmt":"2022-02-26T10:49:50","guid":{"rendered":"http:\/\/en.testnordic.com\/?post_type=product&p=4057"},"modified":"2025-12-27T13:23:29","modified_gmt":"2025-12-27T12:23:29","slug":"rmo-a","status":"publish","type":"product","link":"https:\/\/testnordic.se\/en\/product\/rmo-a\/","title":{"rendered":"Micro-ohmmeters RMO-A Series"},"content":{"rendered":"
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The RMO-A<\/strong> is a portable micro-ohmmeter<\/strong> designed for contact resistance measurements of switchgear during manufacturing, commissioning and maintenance stages. This micro-ohmmeter is widely used by medium and high-voltage circuit breakers manufacturers. Other typical applications are testing of disconnecting switches, high-current bus bar joints, cable splices, and different high-current links. It accurately measures not only in factory environments but also in high-induction fields and substations<\/p>\n

The RMO-A series contains 6 models, rated from 100 A (RMO100A) to 600 A (RMO600A). The RMO500A (formerly CPM500) is our best-seller, with 500 A ripple-free current and weighs only 8 kg.<\/p>\n

Although placed in a very portable and lightweight metal housing, RMO-A series micro-ohmmeters<\/a> have very high output power capabilities. They can generate 600 A test current continuously for up to 20 s. You can test with current\u00a0up to 100 A without rest time.\u00a0High output voltage enables a wider measurement range at the highest test currents, as well as the use of thinner\/longer test cables. For testing with 100 A, 20 m\u00a0test leads<\/a>\u00a0can be provided with only 16 mm2 cross-section.<\/p>\n

RMO-A micro-ohmmeter generates a true DC ripple-free (less than 1 %) current with automatically regulated test ramps. During a test, the RMO-A ramps up with increasing current before measuring and decreasing current after the measurement. This significantly decreases magnetic transients and ensures great accuracy.<\/p>\n

An additional option is a built-in High Precision module suitable for measurement of very low resistances, ranges from 1 to 30 \u00b5\u2126, with 0,01 \u00b5\u2126 resolution.<\/p>\n

These instruments can store up to 500 measurements in internal memory. A built-in thermal printer is available as an option.<\/p>\n

Our free\u00a0DV Win<\/a> software communicates with the RMO-A series portable micro-ohmmeter via USB or RS232 interface. It allows you to run the test remotely from PC, as well as to download test results, analyze and generate fully configurable test reports.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n

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Micro-Ohmmeter RMO-A Series<\/a><\/h3>\n
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The RMO-A is a portable micro-ohmmeter designed for contact resistance measurements of switchgear during manufacturing, commissioning and maintenance stages. This micro-ohmmeter is widely used by medium and high-voltage circuit breakers manufacturers. Other typical applications are testing of disconnecting switches, high-current bus bar joints, cable splices, and different high-current links. It accurately measures not only in factory environments but also in high-induction fields and substations<\/p>\n","protected":false},"featured_media":4058,"template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product_brand":[],"product_cat":[65,98],"product_tag":[],"yst_prominent_words":[],"class_list":{"0":"post-4057","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-circuit-breaker-handling","7":"product_cat-micro-ohmmeters","9":"first","10":"instock","11":"product-type-simple","12":"entry","13":"content-bg","14":"loop-entry"},"_links":{"self":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/4057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":6,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/4057\/revisions"}],"predecessor-version":[{"id":14342,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product\/4057\/revisions\/14342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/media\/4058"}],"wp:attachment":[{"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/media?parent=4057"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_brand?post=4057"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_cat?post=4057"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/product_tag?post=4057"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/testnordic.se\/en\/wp-json\/wp\/v2\/yst_prominent_words?post=4057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}