{"product_id":"abb-reu610-cvvhcnr-voltage-protection-relay","title":"ABB REU610 CVVHCNR Voltage Protection Relay","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB REU610 CVVHCNR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an intelligent voltage protection relay within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRelion® 610 series\u003c\/strong\u003e, engineered for comprehensive busbar and feeder supervision. It is specialized for detecting over-voltage and under-voltage conditions in distribution substations, power transformers, and motors. \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eREU610 CVVHCNR.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Series:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRelion 610.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCore Function:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVoltage Supervision and Protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOvervoltage Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTwo-stage integrated logic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUndervoltage Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTwo-stage integrated logic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Fault Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTwo-stage Residual Overvoltage protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePhase Sequence Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNegative phase-sequence overvoltage or Positive phase-sequence undervoltage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProtocols:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIEC 61850, Modbus, DNP3, Profibus, SPA, LON, IEC 60870-5-103.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCertifications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eKEMA Certified, DNV (Marine\/Offshore) Approved.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features and Engineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Voltage Suite:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides precise two-stage monitoring for both over-voltage and under-voltage, ensuring that sensitive industrial equipment and motors are not damaged by grid instability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResidual Voltage Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifically effective in isolated neutral systems for non-discriminative earth-fault protection, identifying phase-to-ground faults via residual voltage measurement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAutomatic Busbar Changeover:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes built-in initialization logic for substation busbar changeover, ensuring a seamless transition to backup power sources during primary failures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIslanding Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProtects the public network by automatically disconnecting small power units (distributed generation) during grid disturbances to prevent unsafe islanding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDraw-out Maintenance Efficiency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe removable plug-in design allows for rapid insertion and withdrawal, significantly reducing downtime during commissioning or routine maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Communication Gateway:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports a wide range of protocols, from legacy Modbus and SPA to modern\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIEC 61850\u003c\/strong\u003e, ensuring compatibility with diverse SCADA and automation architectures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46985771253950,"sku":"REU610 CVVHCNR","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-05-11_11-31-07.png?v=1778470842","url":"https:\/\/www.autooiltech.com\/products\/abb-reu610-cvvhcnr-voltage-protection-relay","provider":"AutoOilTech Limited","version":"1.0","type":"link"}