{"product_id":"745-w2-p5-g1-hi-a-ge-745-series-transformer-protection-relay-module","title":"745-W2-P5-G1-HI-A GE 745 Series Transformer Protection Relay Module","description":"\u003cp\u003eThe \u003cstrong\u003eGE 745-W2-P5-G1-HI-A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eGE 745\u003c\/strong\u003e Transformer Protection Relay Module, operates as a dedicated hardware component for multi-winding current differential evaluation and fault actuation within utility substation power networks.\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-G1-HI-A\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eCanada \/ United States\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 745 Series Chassis Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 - +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eHI Power Supply Option Dependent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransformer Windings\u003c\/td\u003e\n\u003ctd\u003e2 Winding configuration (W2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase CT Input\u003c\/td\u003e\n\u003ctd\u003e5 A secondary (P5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround CT Input\u003c\/td\u003e\n\u003ctd\u003e1 A \/ 5 A secondary (G1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Elements\u003c\/td\u003e\n\u003ctd\u003e87T (Differential), 24 (Overexcitation), 49 (Thermal Overload)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Protection\u003c\/td\u003e\n\u003ctd\u003eConformal coating layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Interface\u003c\/td\u003e\n\u003ctd\u003eEnhanced LCD display with expanded keypad\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 Processing Architecture\u003c\/h3\u003e\n\u003cp\u003eThe module computes phase current vectors and calculates differential metrics continuously across the 2-winding network structure. Real-time calculations of Total Harmonic Distortion (THD), frequency rate-of-change, and hottest spot thermal tracking are executed via an internal floating-point processor. To preserve execution synchronization and prevent buffer underruns during sequence-of-events logging, matching upstream substation SCADA properties with verified firmware flash compatibility benchmarks across all localized processing layers is mandatory.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the dynamic CT ratio mismatch correction behave during external fault states?\u003c\/p\u003e\n\u003cp\u003eA: The internal processing matrix samples phase currents and normalizes scaling parameters mathematically based on configured winding entries every half-cycle. This internal optimization eliminates the requirement for external auxiliary matching current transformers.\u003c\/p\u003e\n\u003cp\u003eQ: What is the function of the conformal coating modification on this specific hardware assembly?\u003c\/p\u003e\n\u003cp\u003eA: The conformal coating layer isolates surface-mount components from atmospheric moisture, airborne conductive particulates, and corrosive chemical traces, preventing parasitic trace leakage and maintaining dielectric boundary integrity.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Grounding Connection:\u003c\/strong\u003e Attach a dedicated, low-impedance copper conductor from the rear panel safety ground lug directly to the local substation primary earth ground grid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Transformer Termination Layout:\u003c\/strong\u003e Route all 5 A phase and ground CT secondary loops through external shorting test blocks before connecting to the terminal block to allow safe maintenance tracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Cable Segregation:\u003c\/strong\u003e Run all low-voltage analog signal lines through dedicated wireways isolated from the main alternating current (AC) or high-voltage direct current (DC) control power wiring to minimize electromagnetic noise coupling.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":53114498122037,"sku":"745-W2-P5-G1-HI-A","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/745-W2-P5-G1-HI-A.png?v=1783672089","url":"https:\/\/www.5gplc.com\/products\/745-w2-p5-g1-hi-a-ge-745-series-transformer-protection-relay-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}