{"product_id":"transformer-protection-terminal-abb-ret521-1mrk001530-ae","title":"Transformer Protection Terminal ABB RET521 1MRK001530-AE","description":"\u003ch2\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB RET521\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a numerical transformer protection relay designed to deliver advanced protection and control for power transformers in utility substations and industrial power systems. It consolidates multiple standalone relays by integrating differential protection, overcurrent protection, voltage supervision, and breaker control into a single device.\u003cbr\u003eThis model supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emulti-breaker arrangements\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edoes not require interposing CTs\u003c\/strong\u003e, simplifying system design and reducing installation complexity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eTransformer Protection Terminal \/ Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eRET521\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1MRK001530-AE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e329 × 260 × 270 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDifferential protection for two- and three-winding transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated breaker control and switchgear management\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWide and flexible frequency range for diverse grid conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEvent logs and disturbance recording for fault analysis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIEC 61850 compliance for digital substations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo interposing CTs required, simplifying installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUtility substations:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProtection for power transformers and generator-transformer blocks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial power systems:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReliable protection for critical plant transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRenewable energy plants:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAdvanced detection and control for grid-connected transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReactors \u0026amp; multi-breaker arrangements:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports complex transformer configurations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the primary function of the ABB RET521?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo provide protection, control, and monitoring for power transformers, integrating multiple protective functions into one device.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can the RET521 handle three-winding transformers?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes, it supports both two-winding and three-winding transformer applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What communication protocols does it support?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA3:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIEC 61850, Modbus, and DNP3.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Does the RET521 require interposing CTs?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA4:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNo, it eliminates the need for interposing CTs, simplifying installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Where is the RET521 typically used?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA5:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn utility substations, industrial facilities, renewable energy plants, and systems requiring advanced transformer protection.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":51469480657208,"sku":"RET521 1MRK001530-AE","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/RET521_1MRK001530-AE1.jpg?v=1764832541","url":"https:\/\/www.automodulexpert.com\/ru\/products\/transformer-protection-terminal-abb-ret521-1mrk001530-ae","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}