{"id":1420,"date":"2026-07-13T15:12:16","date_gmt":"2026-07-13T07:12:16","guid":{"rendered":"https:\/\/honest-control.com\/?post_type=product&p=1420"},"modified":"2026-07-13T15:12:16","modified_gmt":"2026-07-13T07:12:16","slug":"mh-voltage-ring-main-unit-rmu","status":"publish","type":"product","link":"https:\/\/honest-control.com\/pt\/product\/mh-voltage-ring-main-unit-rmu\/","title":{"rendered":"M&H Voltage Ring Main Unit – RMU"},"content":{"rendered":"
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Medium & High Voltage Ring Main Unit (RMU)<\/h1>\n<\/div>\n
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Compact Gas-Insulated Switchgear for Reliable Ring Network Power Distribution<\/h2>\n<\/div>\n
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Product Overview<\/h3>\n<\/div>\n
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Our medium & high voltage ring main unit (RMU) is a compact, fully enclosed switchgear solution designed for 6kV \/ 10kV \/ 24kV AC 50\/60Hz power distribution systems. Adopting advanced gas-insulated (SF6) technology, it integrates load break switches, circuit breakers and protection components into a sealed cabinet, fulfilling power switching, protection, metering and sectionalizing functions in ring network and terminal power supply scenarios.<\/div>\n<\/div>\n
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With its space-saving structure, high environmental adaptability and maintenance-free design, it is widely deployed in urban & rural power grids, industrial parks, commercial districts and box-type substations, delivering safe, stable and cost-effective medium-voltage power distribution.<\/div>\n<\/div>\n
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Core Features<\/h3>\n<\/div>\n
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    Fully Sealed & Insulated Design<\/strong><\/p>\n
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    The main switching components are fully enclosed in a stainless steel tank filled with SF6 insulating gas, achieving complete insulation and arc extinction. With an IP67 protection grade for the gas tank, it is immune to dust, moisture, condensation and harsh environmental conditions, ensuring stable and reliable operation in outdoor and severe industrial sites.<\/p><\/div>\n<\/div>\n<\/li>\n

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    Comprehensive Safety Interlocks<\/strong><\/p>\n
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    Equipped with a complete “five-prevention” mechanical interlock system, it prevents misoperations such as live grounding, on-load switching and accidental entry into live compartments. The visible isolation fracture provides clear safety confirmation for operators, and the pressure relief mechanism ensures personnel safety in case of internal faults.<\/p><\/div>\n<\/div>\n<\/li>\n

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    Flexible Modular Configuration<\/strong><\/p>\n
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    Supports free combination of multiple functional units including incoming line, outgoing feeder, metering, bus tie and transformer protection. It can be configured as load break switch type or circuit breaker type, and adapted to both ring network power supply and terminal power supply modes to meet diverse distribution scheme requirements.<\/p><\/div>\n<\/div>\n<\/li>\n

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    High Reliability & Maintenance-Free Operation<\/strong><\/p>\n
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    The fully sealed gas tank structure eliminates the influence of external environmental factors on internal components, with no need for regular gas replenishment or internal cleaning under normal conditions. It features a long service life and extremely low failure rate, greatly reducing daily operation and maintenance costs.<\/p><\/div>\n<\/div>\n<\/li>\n

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    Compact Footprint & Easy Installation<\/strong><\/p>\n
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    The integrated modular design delivers an extremely compact structure, saving more than 50% of installation space compared with traditional open-type switchgear. It can be directly installed in box-type substations, small distribution rooms or outdoor sites, significantly shortening project construction cycles.<\/p><\/div>\n<\/div>\n<\/li>\n

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    Smart Upgrade Capability<\/strong><\/p>\n
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    Optional motorized operating mechanism, fault indicator and FTU (Feeder Terminal Unit) are available to support remote control, telemetry, fault location and automatic power restoration. It seamlessly connects to distribution automation systems, enabling intelligent management of medium-voltage distribution networks.<\/p><\/div>\n<\/div>\n<\/li>\n<\/ol>\n<\/div>\n

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    Technical Specifications<\/h3>\n<\/div>\n
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    • Rated voltage: 6kV \/ 10kV \/ 24kV, 50\/60Hz<\/li>\n
    • Rated current: 630A (busbar), 200A \/ 630A (breaker\/switch)<\/li>\n
    • Rated short-circuit breaking current: 20kA \/ 25kA<\/li>\n
    • Insulation medium: SF6 gas (zero leakage design)<\/li>\n
    • Protection grade: Gas tank IP67; cabinet IP3X \/ IP4X<\/li>\n
    • Operation mode: Manual standard; motorized optional<\/li>\n
    • Switching times: \u2265 10,000 times (mechanical)<\/li>\n
    • Installation: Indoor \/ outdoor (enclosure optional)<\/li>\n
    • Protection functions: Overload, short-circuit, earth fault, over-temperature protection<\/li>\n<\/ul>\n<\/div>\n
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      Typical Applications<\/h3>\n<\/div>\n
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      • Urban and rural power grid renovation and distribution automation projects<\/li>\n
      • Power distribution for residential communities, commercial complexes and municipal facilities<\/li>\n
      • Medium-voltage distribution systems in industrial parks, mining areas and oilfields<\/li>\n
      • Core matching equipment for outdoor compact box-type substations<\/li>\n
      • Grid connection for photovoltaic, wind power and other new energy projects<\/li>\n
      • Power supply for highways, railways, scenic areas and remote sites<\/li>\n<\/ul>\n<\/div>\n
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        Every ring main unit undergoes strict factory tests including insulation withstand test, partial discharge test and mechanical operation test before delivery. We provide full customization of voltage grade, configuration scheme, intelligent functions and enclosure type, along with end-to-end technical support from scheme design to on-site commissioning, delivering reliable, space-saving medium-voltage distribution solutions for your projects.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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        <\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

        Medium & High Voltage Ring Main Unit (RMU) Compact Gas-Insulated Switchgear for Reliable Ring Network Power Distribution Product Overview Our medium & high voltage ring main unit (RMU) is a compact, fully enclosed switchgear solution designed for 6kV \/ 10kV \/ 24kV AC 50\/60Hz power distribution systems. Adopting advanced gas-insulated (SF6) technology, it integrates load […]<\/p>\n","protected":false},"featured_media":1421,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69,67],"product_tag":[],"class_list":["post-1420","product","type-product","status-publish","has-post-thumbnail","product_cat-mh-voltage-ring-main-unit-rmu","product_cat-mh-voltage-switchgear","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/product\/1420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/comments?post=1420"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/media\/1421"}],"wp:attachment":[{"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/media?parent=1420"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/product_brand?post=1420"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/product_cat?post=1420"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/honest-control.com\/pt\/wp-json\/wp\/v2\/product_tag?post=1420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}