{"product_id":"ge-sff202b1a-static-frequency-relays","title":"GE SFF202B1A Static Frequency Relays","description":"\u003cp\u003eThe \u003cstrong\u003eGeneral Electric SFF202B1A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSFF202B1A\u003c\/strong\u003e Static Frequency Relay, operates as a dedicated hardware component for frequency monitoring and protective tripping execution within power protection and control platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSFF202B1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGeneral Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eStandard Commercial Origin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard Relay Unit Weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Protective Relay Panel Dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard Industrial (-20 deg C to 60 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eDependent on auxiliary VDC input loading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e110-120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary Voltage Range (VNA)\u003c\/td\u003e\n\u003ctd\u003e48\/110\/120\/220\/250 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency Range\u003c\/td\u003e\n\u003ctd\u003e40\/79 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumentation Reference\u003c\/td\u003e\n\u003ctd\u003eInstruction Book GEK90636\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware Flash Compatibility and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eFirmware flash compatibility and deterministic logic processing define the interaction between field protection relays and industrial network architecture. Integrating internal measurement circuits with standardized backplane communication channels prevents signal transmission bottlenecks during dynamic power system events. High I\/O density scaling coupled with proper channel-to-channel isolation maintains system integrity and suppresses transient noise interference across substation monitoring buses.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What auxiliary voltage levels are supported by the SFF202B1A input circuits?\u003c\/p\u003e\n\u003cp\u003eA: The auxiliary DC input capability (VNA) accommodates discrete operating selections of 48 VDC, 110 VDC, 120 VDC, 220 VDC, and 250 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: What is the primary operating frequency range monitored by this unit?\u003c\/p\u003e\n\u003cp\u003eA: The relay measures continuous power line frequencies within the specified range of 40 Hz to 79 Hz (40\/79 Hz).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate all AC voltage sensing loops and auxiliary DC power feeds before performing physical installation or terminal wiring.\u003c\/li\u003e\n\u003cli\u003eVerify proper selection of the internal auxiliary DC supply tap matching the substation auxiliary battery voltage (48 VDC to 250 VDC range).\u003c\/li\u003e\n\u003cli\u003eConnect the protective relay chassis lug directly to the panel earth ground bus using a short, low-impedance conductor.\u003c\/li\u003e\n\u003cli\u003eKeep low-level signal and trip outputs routed separately from high-current switching conductors to limit electromagnetic noise coupling.\u003c\/li\u003e\n\u003cli\u003eRefer to Instruction Book GEK90636 for explicit panel cutout profiles and terminal block terminalization assignments.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":45396888322163,"sku":"SFF202B1A","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/SFF202B1A_1200x1200_18ee2e53-b20f-4650-b66b-e3a9faab256d.jpg?v=1787640829","url":"https:\/\/www.dcssupplier.com\/products\/ge-sff202b1a-static-frequency-relays","provider":"DcsSupplier Limited","version":"1.0","type":"link"}