{"product_id":"victron-ufr1001e-anti-islanding-relay","title":"Victron UFR1001E Anti-Islanding Relay G98\/G99 | REL100100000","description":"\u003cp\u003eThe Victron UFR1001E is an anti-islanding relay for grid-connected solar and inverter installations in the UK. It monitors grid frequency and voltage at the point of connection and disconnects the inverter when either parameter falls outside safe limits, supporting G98 or G99 compliance for qualified installers.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eContinuously monitors grid frequency and voltage, tripping the relay when thresholds are exceeded\u003c\/li\u003e\n\u003cli\u003eSupports G98 and G99 compliance requirements for UK grid-connected solar PV systems\u003c\/li\u003e\n\u003cli\u003eWeighs 0.23 kg, small enough for standard enclosures\u003c\/li\u003e\n\u003cli\u003eWorks with Victron inverters and inverter\/chargers in grid-tied configurations\u003c\/li\u003e\n\u003cli\u003eProvides automatic disconnection to prevent back-feeding into a de-energised grid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct overview\u003c\/h2\u003e\u003cp\u003eAnti-islanding protection is a mandatory requirement for grid-connected inverter systems in the UK. Without it, an inverter can keep energising the local network after the grid goes down, putting utility engineers at risk on lines they believe are dead. The UFR1001E is a dedicated external relay rather than a software-only function, so it can satisfy DNO or local authority requirements for a physical disconnect device as part of a G98 or G99 application. It wires into the AC side of the installation and operates independently of the inverter's own internal protection, adding a hardware layer of disconnection.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eSuited to grid-connected solar PV systems requiring G98 or G99 DNO notification, Victron inverter and inverter\/charger installations specifying a physical anti-islanding disconnect, and retrofit protection on existing grid-tied systems, both commercial and residential.\u003c\/p\u003e\u003ch2\u003eInstallation notes\u003c\/h2\u003e\u003cp\u003eFitting must be carried out by a qualified electrician experienced with grid-connected solar PV wiring. G98 or G99 notification to the relevant DNO is required before energising the system, and the relay must be wired according to the manufacturer's diagram and any DNO-specific requirements.\u003c\/p\u003e\u003ch2\u003eWhat's included\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e1 x Victron UFR1001E Anti-Islanding Relay\u003c\/li\u003e\u003c\/ul\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":52095615336736,"sku":"REL100100000","price":624.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/8148\/1504\/files\/ledandsolar-rel100100000-1.webp?v=1785756394","url":"https:\/\/www.ledandsolar.co.uk\/products\/victron-ufr1001e-anti-islanding-relay","provider":"LED \u0026 Solar","version":"1.0","type":"link"}