{"product_id":"general-electric-745-w2-p5-g5-multilin-transformer-protection-relay","title":"General Electric 745-W2-P5-G5 Multilin Transformer Protection Relay","description":"\u003cp\u003eThe \u003cstrong\u003eGeneral Electric 745-W2-P5-G5\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e745\u003c\/strong\u003e Transformer Protection Relay, operates as a dedicated hardware component for high-speed differential protection, monitoring, and control within substation transformer power networks. It provides current-based harmonic restraint, dual-slope percentage differential execution, overcurrent detection, and asset health evaluation for two-winding transformer configurations.\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\u003e745-W2-P5-G5\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.54 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e21.5 cm x 23 cm x 25 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e30 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWindings Supported\u003c\/td\u003e\n\u003ctd\u003e2-winding configurations (W2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Transformer Inputs\u003c\/td\u003e\n\u003ctd\u003e5 A Phase CT secondary inputs (P5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround CT Inputs\u003c\/td\u003e\n\u003ctd\u003e5 A Ground CT secondary input (G5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Construction\u003c\/td\u003e\n\u003ctd\u003eDraw-out case for panel mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, DNP 3.0 Level 2, RS232, RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSubstation Communication and Firmware Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGeneral Electric 745-W2-P5-G5\u003c\/strong\u003e utilizes dedicated internal processing pipelines to maintain deterministic network execution and high backplane bus communication velocity. The architecture supports EtherNet\/IP and Modbus network integration for high-density I\/O data streaming, transmitting real-time sequence components, total harmonic distortion (THD) metrics, and oscillography event records to SCADA hosts. Internal firmware flash compatibility facilitates setpoint file execution and FlexLogic equations without disrupting physical current transformer sampling loops.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the purpose of the draw-out case construction on the 745-W2-P5-G5 relay?\u003c\/p\u003e\n\u003cp\u003eA: The draw-out case design allows the internal relay chassis to be removed for testing or replacement without disturbing external terminal block wiring or shorting secondary current transformer circuits.\u003c\/p\u003e\n\u003cp\u003eQ: How are current inputs configured on the P5 and G5 model variants?\u003c\/p\u003e\n\u003cp\u003eA: The P5 designation indicates 5 A rated secondary phase current transformer inputs, while the G5 designation specifies a 5 A rated secondary ground current transformer input channel.\u003c\/p\u003e\n\u003cp\u003eQ: Does the unit support harmonic restraint during transformer energization?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the relay executes 2nd and 5th harmonic restraint algorithms to inhibit percentage differential trip outputs during transformer magnetizing inrush and overexcitation conditions.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the draw-out sleeve securely into the panel cutout using standard mounting hardware before inserting the relay unit.\u003c\/li\u003e\n\u003cli\u003eEnsure the safety ground terminal on the rear panel connects directly to the substation earth ground bus using a short, low-impedance copper wire (minimum 12 AWG).\u003c\/li\u003e\n\u003cli\u003eVerify that all secondary current transformer wiring matches the 5 A AC current rating of the P5 and G5 terminal terminals prior to energization.\u003c\/li\u003e\n\u003cli\u003eRoute low-voltage RS485 and Ethernet communication cables in separate grounded conduits away from high-voltage AC current inputs and trip output contact wiring.\u003c\/li\u003e\n\u003cli\u003eConfirm that the DC power supply voltage rating matches the auxiliary power terminal specifications before applying operating voltage.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"GE FANUC","offers":[{"title":"Default Title","offer_id":52710266405176,"sku":"745-W2-P5-G5","price":220.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/745-W2-P5-G52.jpg?v=1785315419","url":"https:\/\/www.automodulexpert.com\/products\/general-electric-745-w2-p5-g5-multilin-transformer-protection-relay","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}