{"product_id":"ge-multilin-745-w2-p5-g5-hi-transformer-protection-relay-1","title":"GE Multilin 745-W2-P5-G5-HI Transformer Protection Relay","description":"\u003ch2\u003eGE Multilin 745-W2-P5-G5-HI Transformer Protection Relay\u003c\/h2\u003e\n\u003cp\u003eConfigured for transformer differential protection and current input processing in GE Multilin substation automation systems, the \u003cstrong\u003eGE Multilin 745-W2-P5-G5-HI\u003c\/strong\u003e (\u003cstrong\u003e745\u003c\/strong\u003e Transformer Protection Relay) provides direct physical\/electrical execution for 2-winding transformer protection circuits.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eGE Multilin 745-W2-P5-G5-HI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 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\u003e25 W nominal, 45 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Function\u003c\/td\u003e\n\u003ctd\u003eTransformer differential, overcurrent, ground fault, thermal overload monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransformer Configuration\u003c\/td\u003e\n\u003ctd\u003e2-winding transformer support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase CT Inputs\u003c\/td\u003e\n\u003ctd\u003e5 A nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround CT Inputs\u003c\/td\u003e\n\u003ctd\u003e5 A nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Tracking\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz nominal, 40 to 70 Hz range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Input\u003c\/td\u003e\n\u003ctd\u003e88 to 300 VDC \/ 88 to 265 VAC, 47 to 63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eRS232, RS485, RS422, Modbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Transfer Rate\u003c\/td\u003e\n\u003ctd\u003eUp to 19,200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eDraw-out case, 19-inch rack mount or panel cutout mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network and Protection Processing\u003c\/h3\u003e\n\u003cp\u003eThe GE Multilin 745-W2-P5-G5-HI uses microprocessor-based protection processing for transformer electrical measurement and trip logic execution. The relay performs percent differential protection with harmonic restraint functions to discriminate transformer magnetizing inrush and overexcitation conditions. Digital CT ratio matching and phase vector compensation are executed internally, removing the requirement for external interposing CT devices.\u003c\/p\u003e\n\u003cp\u003eThe unit provides optically isolated digital inputs for external status monitoring and interlocking functions. Form-A and Form-C output relays provide direct interfaces for breaker trip and control circuits. Configurable 4-20 mA analog outputs support transmission of measured parameters including current values, thermal loading, and differential current information.\u003c\/p\u003e\n\u003cp\u003eFirmware operation supports event recording, disturbance capture, waveform storage, and fault parameter logging for protection analysis. RS485\/RS422 communication with Modbus RTU protocol enables connection to SCADA and substation automation networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the GE Multilin 745-W2-P5-G5-HI support direct CT ratio matching without external CTs?\u003cbr\u003eA: Yes. The relay performs digital CT ratio matching and phase vector group compensation internally through software configuration.\u003c\/p\u003e\n\u003cp\u003eQ: What type of field wiring replacement method is supported by this relay?\u003cbr\u003eA: The relay uses a draw-out case construction, allowing relay module replacement without disturbing rear field wiring connections.\u003c\/p\u003e\n\u003cp\u003eQ: What communication protocols are available for integration?\u003cbr\u003eA: The unit provides RS232 front-panel communication and RS485\/RS422 rear communication interfaces supporting Modbus RTU protocol.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the relay in a suitable rack or panel enclosure using the specified draw-out mounting arrangement.\u003c\/li\u003e\n\u003cli\u003eMaintain separation between CT wiring, control wiring, and high-energy power conductors to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eConnect CT secondary circuits using dedicated terminal wiring and verify polarity before energizing the protection system.\u003c\/li\u003e\n\u003cli\u003eGround cable shields according to substation grounding practices, with shield termination arranged to minimize circulating currents.\u003c\/li\u003e\n\u003cli\u003eVerify auxiliary supply voltage compatibility before applying power to the HI power supply input.\u003c\/li\u003e\n\u003cli\u003eConfirm communication wiring polarity, termination, and addressing before connecting RS485\/RS422 networks.\u003c\/li\u003e\n\u003cli\u003ePerform protection setting verification and input\/output functional checks before placing the relay into service.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":44508301164632,"sku":"745-W2-WP5-G5-HI","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/745-W2-P5-G5-LO-A-L-R-E.jpg?v=1786007677","url":"https:\/\/www.industriaxplc.com\/id\/products\/ge-multilin-745-w2-p5-g5-hi-transformer-protection-relay-1","provider":"IndustriaX Limited","version":"1.0","type":"link"}