IEC protection relay RET620

voltagefor transformerspanel-mount

RET620 is a dedicated transformer management relay for the protection, control, measurement and supervision of both power and step-up transformers, including power generator-transformer blocks, in utility and industrial power distribution systems. RET620 is also ideal for voltage regulation. Compact and versatile two-winding power transformer protection relay with integration of protection, control, monitoring and supervision in one relay. Scope • Protection for two-winding power transformers Key benefits • Extensive protection and control functionality • Functional scalability and extensive possibilities to easily tailor configurations to application-specific requirements • Withdrawable plug-in unit design for swift installation and testing • Large graphical display showing customizable SLDs, accessible either locally or through an easy-to-use web-browser-based HMI • Extensive life-cycle services Key features • Extensive range of protection and control functionality for two-winding power transformers, including advanced and fast differential protection with high inrush stability • Supports various neutral earthing options, matching either high-impedance or numerical low-impedance restricted earth-fault principles • Optionally can also include automatic voltage regulation of power transformers with a motor-driven on-load tap changer and arc protection