3 phase vfd on single phase 6 amps, RS485 enabled, shipping weight 3kg, manufacturer direct sale. Rather than changing voltage frequency or motor speed, phase converters simply change the type of voltage from one form to another. I cover some important things to consider before starting your project Jun 3, 2020 · What Real-life Problems can be Solved by using ATO Single Phase to 3 Phase VFD? 220v-240v Single to three phase VFD can solve the problem of power phase mismatch, that is, the power supply is single-phase, and the equipment uses three-phase power. Since most high horsepower VFDs only accept three phase input as a power source, they are left with few options or alternatives. vfd 220v input 220v 3 phase output widely used in spindle motor, drill press, CNC, compressor, milling, HVAC, lathe, pumps, conveyors, cooling, fan, and three phase motor. IM PLANNING TO INSTALL A 240 VOLT TO 480 VOLT SINGLE PHASE TRANSFORMER TO FEED LINE SIDE OF VFD AT 480 VOLT SINGLE PHASE . com : ATO 2hp Single to Three Phase VFD, Single Phase 220V/230V Input, Three Phase Output VFD Variable Frequency Drive, for 3-Phase AC Motor Speed Adjustment, Non-Enclosure : Tools & Home ImprovementHow to choose a VFD? Except for the input voltage, the following two conditions need to be met: 1. Single Phase 110v/120v input, 1-phase / 3-phase 220v-240v output VFD from ATO can be your choice. Next step is to confirm with the VFD supplier what the single-phase input current will be at 208 V single-phase. Generate the 3-phase power on-site. Also wondering how to calculate vfd input current so I can size my cable and breakers accordingly. May 16, 2017 · The issue from the earlier and now closed thread was could a particular three phase input VFD, motor, and fan be used in a different application with single phase power input. Three-phase power from a single-phase source anywhere you need it. Low price variable frequency drives with single phase input to three phase output (1hp, 2hp, 3hp, 5hp), buy cheap VFD from manufacturers directly on VFDs. The actual load is 18. Feb 29, 2024 · A typical use for higher h. It will likely be Affordable 15 hp single phase VFD, 1 phase 220-240v 50Hz/60Hz input and 3 phase 220v 230v 240v output, running three phase motor on single phase household power supply. 75 kW single phase 110V/120V input, single phase or three phase 220v output variable frequency drive. Note: The rated current Feb 4, 2022 · A variable frequency drive (VFD) transforms single-phase power into direct current and then uses microchip-guided controls to simulate three-phase alternating current. Jun 28, 2023 · Learn how single-phase VFDs optimize motor performance and save energy. Sep 30, 2023 · Understand the process of utilising a VFD to efficiently to operate a three-phase motor using a single-phase power source. It widely used in spindle motor, drill press, CNC, compressor, milling, HVAC, lathe, pumps, conveyors, cooling, fan, and three phase motor. I have found a used VFD locally that is made for 30 hp motors. Sep 27, 2016 · Single-phase input is another useful application of a VFD for phase conversion. A phase converter changes single-phase electricity into three-phase power, allowing you to run three-phase motors and equipment. I only have 240 volt single phase service. Resolution: Yes, the ATV320 is suitable for single phase supply to three phase motors. COM Store 5. Most times to derate a three phase VFD for single phase power can be done by going up one size. I read through the manual and in the wiring guide it states that the Mar 5, 2009 · As the topic says, i have received a 3phase input inverter with a mill recently aquired. Jun 27, 2016 · Step 3 – Install 5% Reactor Single-phase supplies have extremely high current spikes and will cause more mains distortion and DC bus capacitor heating (heat = shorter VFD lifetime). 0 1 rating $1,85470 Sep 15, 2013 · In this post I have explained a single phase variable frequency drive circuit or a VFD circuit for controlling AC motor sped without affecting their operational specifications. 0 means no action, 1 means motor static auto tuning, and 2 means motor rotation auto tuning. VFD 220V-240V single phase to 3 phase variable frequency drive options are widely available for standard residential or commercial use. ) into a three phase power Sizing for single-phase input to three-phase output Variable frequency drives (VFDs) can convert single-phase input voltage to three-phase output voltage. Mar 13, 2023 · The first step is that the VFD will need to be oversized (de-rated) to operate from a single-phase supply. Wiring between VFD and 1-phase motor (remove capacitor) Connect main and secondary winding of motor to U V W of VFD, and VFD can work. 6 amps, brand new direct sale by manufacturer. May 19, 2021 · ATO 20hp VFD, Single Phase 240V Input to 3 Phase 380V Output, 15KW 240V to 380V Single to Three phase VFD Variable Frequency Drive, VFD Inverter VFD Drive Frequency Converter for Motor Speed Control Visit the ATO. 5 kW) for sale. Aug 15, 2025 · Here, you will learn how to operate a 3-phase motor on a single-phase supply with VFD. These variable frequency drives are capable of converting 208 V/230 V/240 V single-phase or three-phase to 460 V three-phase. Single Phase to Three Phase Conversion What is phase conversion? A phase converter is a device that produces three-phase electrical power from a single-phase source, allowing the operation of three-phase equipment at a site that only has single-phase electrical service. How to Operate and Control a Three-Phase Motor on Single-Phase Power Supply Using VFD? Three-phase motors are commonly used in industrial and commercial applications due to their efficiency and performance. To generate 3-phase power on-site for a pump motor, a VFD is often a very economical option. When only single-phase power is available, some VFDs can use single-phase input power to provide three-phase output power and operate a three-phase motor. 61 x 4. com Convert single-phase to three-phase power with a 1 Phase to 3 phase VFD. Mar 25, 2021 · What Real-life Problems can be Solved by using ATO Single Phase to 3 Phase VFD? 220v-240v Single to three phase VFD can solve the problem of power phase mismatch, that is, the power supply is single-phase, and the equipment uses three-phase power. Dec 12, 2022 · Often times those using a Variable Frequency Drive (VFD) may find they need to connect a higher horsepower VFD to a single phase input power source. They should tell you what the input current requirement are. However, a VFD that is powered by single-phase must generally be derated to account for the increased current load on certain components within the front end of the VFD. the way a VFD generates its output (phase interleaved PWM) it highly dependant on it being sent to a three phase motor with interconnected wiring and magnetic fields on one motor core. Get the best deals on Single Phase Vfd when you shop the largest online selection at eBay. If it’s a large motor they need to make sure they have the service to handle that. 4 kW) to 10 hp (7. It should be possible to simply match The VFD required will be dependent upon both the motor and the power source available. 2kW) 10Amps 200-230V 3-Phase Motor, Input/Output 200V-230V,Variable Frequency Drive - Amazon. the rated current of your motor < the rated current of the vfd 2. 5 hp variable frequency drive, single phase 110v-120v input, single phase and three phase 220v-240v output, V/F & vector control, running AC motor on single phase 120v power supply via ATO VFD. Note: The rated current Affordable 1hp VFD, single phase 208V - 240V AC input, three phase output variable frequency AC drive, 220V 4 amps, manufacturer direct sale. 00~1000. Buying a VFD in following lists, you can run your three phase motors on Oct 20, 2010 · The formula we use to derate variable frequency drives for single phase power is as follows: AC electric motor current multiplied by 1. Phase Perfect ® digital phase converter uses modern solid-state electronics to create utility-quality three-phase power anywhere. The VFD can be treated as a phase converter for single phase 220v home power supply to drive three phase 220v motors. Jul 16, 2019 · ATO 5 hp 3. In areas where three phase power is unusable or too costly to introduce from the power line, how to convert the voltage from single phase to three phase is a common problem. It's recommended to upgrade the motor to Aug 5, 2013 · A VFD (variable frequency drive) is an electric motor drive and although it will convert single phase to three phase it should never be used as a power source for control circuits, instrumentation circuits, or to operate other electronic components. The first phase converters were invented nearly one hundred years ago. Can a ABB 3 phase input inverter be used by just giving it single phase input? I have single phase in my workshop and convert to 3phase with a RPC. According to the manufacture chart for using the VFD as a phase converter I need AWG #6 5hp variable frequency drive, single phase to three phase VFD, 17 amps, RS485 enabled, shipping weight 4kg, manufacturer direct sale. Jun 1, 2020 · About this item ATO 220v single phase to 3 phase vfd, 220V 0. Learn how to wire a 3 phase motor to a variable frequency drive (VFD) for precise control and improved efficiency. Note: The rated Jan 4, 2021 · I am installing a Yaskawa VFD to drive a 3ph 208/230V centrifugal pump. In summary, the main difference between single-phase and three-phase AC drives is the number of phases in the AC power supply they are designed for and the types of motors they can drive. 2 A, Input voltage: 1 Phase AC 220~240V +/-15%, Input frequency: 50Hz / 60 Hz 【Output Parameters】Output voltage: 3 Phase AC 0~rate input voltage, Output frequency: 0~400. the rated power of your Explore our 220V single-phase to 380V three-phase VFDs, ideal for motor speed control in pumps, fans, conveyors, and automation systems. VFD Single-Phase to 3-Phase Converter, Used on ≤3HP (2. The make/model is ABB ACS401603022. Don?t fret, there is a solution. Strong anti-jamming capability and low acoustics noise make this 3hp vfd user-friendly. In technical it's possible to use a variable frequency drive for 1-phase motor speed controls, but we have to mention, control single phase motor speed by a variable frequency drive may cause overheat of the AC motor, as well as the service life. Learn key steps, wiring tips, and setup essentials for efficient motor operation. For example, a 1 horsepower three-phase motor can operate with a 1 horsepower single-phase VFD. 220V output VFD can solve the problem of power frequency mismatch, that is, the power supply is 50Hz/60Hz, and the equipment power consumption is 0. That, and common single phase induction motors large enough to work with a VFD are not speed controllable to any significant degree anyway. So you probably will have a 15 hp VFD. 13 hours ago · If you’ve ever wondered how to convert single-phase to three-phase power for your workshop or industrial equipment, the short answer is — yes, it’s possible. Using it as a phase converter for single phase power supply to vary three phase motor speed. 2 hp VFD, convert single phase to three phase for AC motor speed controls, 7 amps, IP20, RS485 enabled, manufacturer direct sale. See full list on vfds. The solution? There are single-phase VFDs! While there are a limited number of manufacturers that offer single-phase output VFD, this is one potential solution. See the information included in the Getting Started Annex, document NVE21777 attached to select Jul 6, 2018 · Variable Frequency Drive (VFD), generally it's using for controlling speeds of three phase induction motors. Jun 19, 2025 · Explore how a VFD can convert single-phase to three-phase power, when to use a variable frequency drive phase converter, and which VFD models offer optimal performance. Each of those In this video, I discuss how to use a variable frequency drive (or VFD) to convert single-phase power into three-phase power. Mar 2, 2014 · A single phase motor generally expects 90 degrees phase shift between the windings, vs a 120 degree shift in three phase systems. If i can run the mill without the RPC (use 1phase line in Customize 10 hp VFD with single phase 220v-240v input, this 10hp VFD can be used as a phase converter to convert 1-phase to 3-phase to drive three phase AC motors. Explore common applications and expert tips for choosing the right drive. Dec 10, 2018 · About this item HIGH PERFORMANCE - Power: 4KW; Stages: single-phase input, three-phase output；This VFD uses unique control method to realize high moment of force, high precision and wide speed regulating range driving, with high performance. Many solutions exist such as static phase conversion, rotational phase conversion, and derating standard three phase variable frequency drives. But you can run a 3 phase motor and vfd off single phase if the vfd is rated for it. Similarly, single phase motors and split phase motors can also be powered and speed controlled by variable frequency drives. With today’s advanced converters, it’s easier than ever to single About this item ATO 2hp vfd 110v input 220v 3 phase output, single phase 110V/120V input VFD, 1 phase or 3 phase 220v-240v output, designed for driving 220V single/three phase AC motor via 120v power supply Apr 1, 2003 · When running a three-phase VFD on a single-phase supply, the motor may experience irregular power, leading to increased stress and potential damage. etc. You normally can’t run single phase motors from VFDs. However, it is possible to use a variable frequency drive (VFD) to convert a single-phase power supply into three-phase power for the purpose of driving a three-phase motor. Press DATA to save setting. 00Hz 【APPLICATIONS】ATO 220V 230V Single to Three Phase VFD Variable Frequency Drive Jun 3, 2020 · What Real-life Problems can be Solved by using ATO Single Phase to 3 Phase VFD? 220v-240v Single to three phase VFD can solve the problem of power phase mismatch, that is, the power supply is single-phase, and the equipment uses three-phase power. May 10, 2017 · I have a 240 volt 10hp 3 phase air compressor that I’m trying to run using a VFD. Auto tuning mode function code is P1-11. These motors are often split phase or permanent capacitor types. Single phase variable frequency drives (VFDs, also called variable speed drive, VSD), input 1-phase 220v (230v, 240v), output 3-phase 0-220v, power capacity from 1/2hp (0. Unlike standard VFDs that require three-phase input, this type of drive can work where only single-phase power is available. It is impossible to adjust the speed steplessly, and it is difficult to achieve motor forward and reverse, etc. Jan 22, 2021 · It is possible to input single phase (230 volt) power to a VFD and output variable voltage to a 3-phase induction motor. Three phase power is scarce in many parts of rural America, but the need for three phase motor control is real. Discover the benefits, installation tips, and real-world applications for farms, construction sites, and small workshops. What is a VFD Motors and other similar inductive loads specifically do not "like" operating with frequencies that might be not within their manufacturing specs, and tend to become a lot inefficient if forced to under High quality customize 20 hp 1-phase VFD (VSD) with low price, single phase to three phase for AC motor speed control, manufacturer direct sale. Detailed wiring diagram with step by step working guide Amazon. Single phase induction motor has specific wiring requirements in connecting with ATO single phase VFD. Learn how here! For three phase motor, using a single phase to three phase VFD as a phase converter to drive the motor is a good solution. With the right phase converter single-phase to three-phase, you can power heavy machinery, motors, and tools that normally require industrial-grade electricity. Given that three pairs of IGBT choppers should be able to generate any waveform on each of the three outputs, I am not sure why no manufacturers have firmware that allows a 90 degree . There should derate information on the VFD manual. A single phase VFD can convert 1-phase 220v-240v to 3-phase to power the three phase motor, also can reduce the inrush current of the motor during starting up. Install a 5% choke at the input of the inverter. The most important thing is, it's "Cheap" in ATO online store. p. Voltage Compatibility: Ensure that the VFD matches the voltage of your single-phase supply (e. Our 220V single phase to 380V three phase VFDs offer a wide range of benefits over traditional three phase power sources. Jul 10, 2019 · ATO 1hp VFD, VFD 220V Input 220V 3 Phase Output, 220-240V Single Phase to 3 Phase VFD Variable Frequency Drive for 3-Phase AC Motor Speed Controls (1hp 0. The VFD can be treated as a phase converter. Dec 27, 2021 · Issue: ATV320 single phase supply to a three phase motor Product Line: ATV320, Altivar 320 Machine drive Environment: All models Cause: Short circuit and HP ratings for VFDs supplied with single phase power. Feb 22, 2025 · A single phase frequency drive is a type of variable frequency drive (VFD) designed to operate with a single-phase power source. Power source is single phase 240V. NOTE:Some products do not have the "XCFDP" brand logo on the product due to the production batch, and Discounted 2 hp VFD, 1 phase for single phase AC motor, 220V - 240V 9. org Jun 1, 2020 · ATO 220V 230V 240V single phase to 3 phase VFD VSD, 220V 230V single phase to three phase VFD variable frequency drive, convert single phase to 3 phase for AC motor speed controls, RS485 enabled. 4A 230v 3ph per motor tag. Jul 23, 2017 · Wondering how to size vfds for single phase input and 3 phase output? I have a 3hp, a 5hp, and a 10Hp 3 phase motor that I need to control the speed on. About this item ATO 1hp 110V VFD, 0. comThis VFD can run 3-phase 220v motor with 200-230V AC single or three phase power supply The vfd cannot be used as a power source, It can only be used to connect three-phase motors To protect the VFD, be sure to press the red button "Stop" and Typically, an inverter-based welding supply doesn't really 'need' three phase, but manufacturers design their machines to USE three phase, because they know that their power systems are three phase by historical nature, and putting a high single-phase load on a three phase distribution system is not 'nice' to the system. Mar 24, 2021 · I AM WIRING A 3 PHASE 480 VOLT 50 HP MOTOR NAMEPLATE AMPS 65. , 220V, 240V). 89 inches (L x W x H). ATO 220V/230V/240V single phase to 3 phase VFD VSD, 25ho vfd, 40hp vfd, 50hp vfd, AC 220V 240V single phase to three phase VFD variable frequency drive, convert single phase to 3 phase for AC motor speed controls, RS485 enabled. com. 2 kW vfd 120v input, single phase 110V/120V input, single phase or three phase 220V output variable frequency drive, specially designed for 120V power supply It shall be noticed that three phase power supply is generally available only in industrial applications, most households use only single phase power supply (one live wire, one neutral wire and one earth wire), VFD with three phase power supply can’t be used. 7A) Need 3 phase motor control? Optidrive E3 is a variable frequency drive designed specifically for precise and reliable control for IE2, IE3 & IE4 motors. 4 kW, convert single phase to 3 phase for AC motor speed controls, 3 amps, IP20, RS485 enabled 【PARAMETERS】Input voltage: 1 phase 220~240V AC; Input frequency: 50Hz/ 60Hz; Output voltage: 3 phase AC 0~input voltage; Output frequency: 0. ATO single phase VFD auto tuning mode Using VFD vector control and torque control functions, need to use ATO single phase VFD auto tuning mode. single phase VFD's is for fan motors and fans or blowers characteristically require a low low speed torque so there is some concern whether the available single phase VFD's can meet the needs of a mill or lathe. At points where three-phase power is unavailable or impractical, correctly fitted single A Variable Frequency Drive (VFD) is an electronic device that adjusts the frequency and voltage supplied to an electric motor, allowing precise control of motor speed and torque. ATO 3 hp 2. In the Explore single-phase and three-phase VFDs. The standard ABB 580 series VFD is UL listed for 230 V single to three-phase conversion, and sizing can be found in the published 580 series VFD hardware manuals and price lists. The general rule to remember is that a VFD can convert single phase into three phase power but, it cannot provide a higher voltage out than what you put in. When converting single-phase power to three-phase power, VFDs employ different control methods to manage the conversion and ensure optimal motor performance. Therefore if you only have a 220V 1phase power supply input, you cannot get three phase 415V output. Typically you would only run a three phase VFD single phase for smaller motors. The VFD is rated for 42A 3ph. ATO 220V 230V 240V single phase to 3 phase VFD VSD, 220V 230V single phase to three phase VFD variable frequency drive, convert single phase to 3 phase for AC motor speed controls, RS485 enabled. 7kw single to 3 phase VFD, 220v single phase input to three phase output Variable Frequency Drive, for AC motor speed control 【Input Parameters】Rated current: 19. Learn how to convert single-phase to three-phase power using Variable Frequency Drives (VFDs) in remote or off-grid locations. However, ABB does not offer a UL listed single-phase input to Need to run a 3-phase machine but only have 1-phase input? There's a VFD solution if you follow these easy steps to properly derate your drive. May 22, 2018 · Dimension: 130 x 103 x 200 mm (L x W x H) VFD Inverter Single to 3 Phase: The vfd drive adopts inflammable plastic for the shell and 3-layer coatings on the inner motherboard to protect the vfd from dust, humidity and corrosion. 1 phase to 3 phase variable frequency drives from ATO are an economical solution. The application is for grain auger Learn about variable frequency drives (VFDs), their industrial applications, and how to choose the best one for your single-phase or three-phase motor. However, the decision between the two should be guided by a careful consideration of your unique requirements, preferences, and long-term goals. As a modern component, it facilitates precise regulation of an electric motor’s speed, torque, and direction by adjusting the frequency and voltage of the power supplied to the motor. Note: The rated current Dec 8, 2016 · The bulk of the industrial motors we tend to see are 3-phase, but that doesn’t cover all the single-phase applications we’re dealing with. FEATURE - It has good anti-trip performance and ability to adapt to rough power, temperature, humidity and dust interference, greatly improved stability ATO 220V 230V 240V single phase to 3 phase VFD VSD, 220V 230V single phase to three phase VFD variable frequency drive, convert single phase to 3 phase for AC motor speed controls, RS485 enabled. May 20, 2017 · Not really. Learn about the single phase to 3 phase VFD schematic and how it can be used to convert power for industrial applications. Mar 7, 2022 · Yes, a VFD can power a three-phase motor with a single-phase input power supply, but phase conversion introduces many considerations that normally don’t factor into buying a VFD. You can use VFD as a phase converter to convert a single phase AC power supply (1 ph 110v, 220v, 230v, 240v etc. Low price 3hp VFD, convert 220V/230V/240V 1 phase to 3 phase, 9. Discover which is best for your application. I WANT TO USE A VFD FOR A PHASE CONVERTOR. A comprehensive guide that outlines the wiring process & provides solutions for typical problems. Jul 17, 2025 · Learn critical considerations when using a Variable Frequency Drive (VFD) with single-phase input and three-phase output, including VFD selection, input rectifier stress, motor compatibility, wiring, protection, control features, thermal management, and manufacturer guidelines. MY QUESTIONS ARE #1-HOW DO I Conclusion When it comes to converting single-phase power to three-phase power, both VFDs and phase converters offer viable solutions. Customize 10 hp VFD with single phase input to three phase output. Over 20 years of development has resulted in a robust and durable phase converter capable of powering any load, from hard-starting motors to Dec 19, 2022 · A phase converter converts utility single-phase power into three-phase power. 5kW Single to Three Phase VFD, VFD 220V Input 220V 3 Phase Output 2hp, 220-240V 1 Phase to 3 Phase VFD 7. Free shipping on many items | Browse your favorite brands | affordable prices. At this point, the TRIP light flashes Our single-phase to three-phase VFD (Variable Frequency Drive) can be used in a wide range of industries - manufacturing, agriculture, and HVAC. There are single phase output VFDs available, but only low quality chinese ones. Running your 1 phase/3 phase motors on 120 volt supply via ATO VFD Jul 16, 2019 · Buy ATO 2hp 1. 00Hz 【Applications】ATO 1 phase to 3 phase With our single phase input, three phase output VFDs, you can power everything from motors and pumps to HVAC systems and more. Yes, you can convert single-phase power to three-phase power using a phase converter or a Variable Frequency Drive (VFD). g. 75kW 4. Controlling a 3-Phase Motor using VFD for Speed Control and Changing the Direction of Rotation Wiring a Variable Frequency Drive (VFD) is a fundamental skill in industrial automation and control systems. Oct 29, 2021 · About this item 【BASIC PARAMETERS】This single phase vfd drive: 1 phase input and 3 phase output;Input voltage: 220V (+/-15%),Output voltage: 220V; Input frequency: 50/60 Hz,Output frequency: 0-400 Hz; The power is 2. Three-phase AC drives can provide more precise control over motor speed, torque, and direction and are commonly used in industrial automation and manufacturing. Specifically designed for pumping applications, these VFD's have all the desirable features for pumping applications with an easy to use interface, and can save significant installation costs. Common rule of thumb is to double the rating of the drive. vfd 220v input 220v 3 phase output widely used in spindle motor, drill press, CNC, compressor, milling, HVAC, lathe, pumps, conveyors, cooling, fan Jan 1, 2023 · A three-phase motor requires three-phase power to operate, and a single-phase power supply only provides a single phase. Dec 30, 2024 · Always select a VFD with an appropriate power rating for your motor. If you have a single-phase power supply and need to control the speed of a motor, it's recommended to use a VFD specifically designed for single-phase input. Single Phase Converter The Single Phase Converter is the solution to your single phase to three phase power conversion needs. Utility quality three-phase power anywhere you need it. 5A Variable Frequency Drive Inverter for 3-Phase AC Motor Speed Controls: Controls - Amazon. Mar 30, 2025 · A Variable Frequency Drive (VFD) creates a simulated third phase, allowing a three-phase motor to run on single-phase power. com FREE DELIVERY possible on eligible purchases Mar 25, 2021 · ATO 220V 230V 240V single phase to 3 phase VFD VSD, 220V 230V single phase to three phase VFD variable frequency drive, convert single phase to 3 phase for AC motor speed controls, RS485 enabled. I would make sure the customer understands that the input current will be higher and they need service to accommodate. 96 x 6. I HAVE ON SITE 240 VOLT SINGLE PHASE. 2KW 3HP 12A, AC 220V; VFD Dimension: 4. Below is a chart that provides a drive size based on voltage class and motor full load current for single-phase applications. Explore the roles of Danfoss inverters, micro drives, and VSDs. 240V load. Jun 1, 2020 · 【TIPS】ATO 220V-240V 1 phase to 3 phase VFD can convert 1-phase 220V-240V to 3-phase to power the three phase AC motor, also can reduce the inrush current of the motor during starting up 【CUSTOMER FIRST】Please refer to the instructions before operating a VFD. 73, then size three phase (vfd) variable frequency drive with the corresponding amps. vpnjb bvuuw tiuz eadt xqzdi ctdj zyu oizf wpdil chdrxy sdpqv clsfodbpo vgvibo egrwt zuuu