{"product_id":"delta-vfd485vp43aftha-3-phase-460v-91a-drive","title":"Delta VFD485VP43AFTHA | 3-Phase 460V 91A Drive","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDelta VFD485VP43AFTHA\u003c\/strong\u003e is a high-capacity Variable Frequency Drive (VFD) engineered for heavy-duty industrial fluid control. With a robust output of 45kW (60HP), this drive excels in managing large-scale HVAC systems, water treatment pumps, and industrial cooling towers. This specific \"THA\" variant incorporates enhanced thermal management and an integrated DC reactor to suppress harmonic distortion, ensuring compliance with strict power quality standards. Its advanced Sensorless Vector Control (SVC) provides the perfect balance between high starting torque and energy-efficient cruise speeds. \u003c\/p\u003e\n\u003ch2\u003eTechnical Configuration\u003c\/h2\u003e\n\u003ch3\u003eModel Specification Logic\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Rating (485):\u003c\/strong\u003e Delivers a rated output current of 91 Amps, supporting motors up to 45kW (60HP).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries (VP):\u003c\/strong\u003e Specialized for variable torque loads, offering a multi-pump control mode and fire mode for emergency fan operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Class (43):\u003c\/strong\u003e 460V 3-Phase input (compatible with 380V–480V ±10% utility grids).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter \u0026amp; Reactor (AF):\u003c\/strong\u003e Includes a built-in EMC filter (Class A) and an internal DC reactor to reduce THDi (Total Harmonic Distortion).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Configuration (THA):\u003c\/strong\u003e Features a reinforced chassis with an independent cooling duct design to isolate power components from dust.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eData Value Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e91 A (Normal Duty)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplicable Motor Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 kW \/ 60 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e86 A (3-Phase AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBraking Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 20% (Standard); up to 125% with external unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150% at 0.5Hz (SVC mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Stability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital: ±0.01%; Analog: ±0.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥ 97.5% at rated load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20 (Standard) \/ NEMA 1 Optional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eInstallation \u0026amp; Maintenance Guide\u003c\/h2\u003e\n\u003ch3\u003eHigh-Power Engineering Standards\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePower Quality:\u003c\/strong\u003e The integrated DC reactor in the VFD485VP43AFTHA significantly reduces harmonics. No additional line reactor is required unless the power source impedance is less than 3%. This reduces both installation footprint and overall system cost.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCooling Architecture:\u003c\/strong\u003e This model utilizes an isolated cooling duct. When mounting in a cabinet, ensure the exhaust air is vented directly out of the enclosure to prevent internal heat buildup. The drive’s fans are field-replaceable to ensure long-term uptime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTorque Terminal Torque:\u003c\/strong\u003e For the 91A output terminals, use M6 or M8 ring terminals with a tightening torque of \u003cstrong\u003e4.0-5.0 N-m\u003c\/strong\u003e to prevent hot spots caused by loose electrical connections.\u003c\/p\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe VFD485VP43AFTHA features an \u003cstrong\u003eAdvanced Multi-Pump Control\u003c\/strong\u003e logic, capable of managing up to 4 pumps simultaneously (1 master fixed speed + 3 auxiliary). It includes a built-in RS-485 interface supporting Modbus RTU\/ASCII with speeds up to 38.4kbps. Its 4-layer conformal coating protects the 45kW power bridge and control logic from moisture and chemical vapors, making it suitable for wastewater treatment facilities and chemical processing plants.\u003c\/p\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the maximum carrier frequency for this 45kW model?\u003c\/strong\u003e\u003cbr\u003eA1: The carrier frequency can be set between 2kHz and 10kHz. For a 45kW drive, 4kHz is the recommended default to balance switching losses and acoustic motor noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I run this drive on a single-phase supply for testing?\u003c\/strong\u003e\u003cbr\u003eA2: No. High-power VP series drives require a balanced 3-phase input to prevent phase-loss protection trips and potential damage to the input rectifier bridge.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: How does the \"Fire Mode\" work in this drive?\u003c\/strong\u003e\u003cbr\u003eA3: When activated via a digital input, the VFD ignores non-critical alarms and runs at a preset frequency to ensure smoke extraction or water pressure is maintained during emergency events.\u003c\/p\u003e","brand":"Delta","offers":[{"title":"Default Title","offer_id":51795440205956,"sku":"VFD485VP43AFTHA","price":201.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/VFD485VP43AFTHA.jpg?v=1777176956","url":"https:\/\/www.etowonauto.com\/kk\/products\/delta-vfd485vp43aftha-3-phase-460v-91a-drive","provider":"Etowon Auto","version":"1.0","type":"link"}