☂️ Can You Run A 380V Motor On 480V

When powered by single-phase, Rockwell recommends that the PowerFlex 400 VFDs be conservatively derated to 35%; and the PowerFlex 523 VFDs conservatively derated to 50%. For example, if a pump and motor are rated for 7.5 HP 3-Phase, then a PowerFlex 400 rated for at least 7.5/0.35=21.4 HP is required, or a PowerFlex 523 rated for at least 7.5/0 Zambia. 400 V. 50 Hz. 4. Zimbabwe. 400 V. 50 Hz. 3, 4. This is a chart which provides an overview of the three-phase voltages and frequencies in use in all countries around the world. Can you run a 380V motor on 480V? The drive will accept 380V, no problem. But the output voltage will be limited by that as well, standard VFDs cannot provide an output voltage that is greater than the input voltage. So if your motor is designed for 480V, you will end up with a limited speed or a loss of torque. The main problem is distribution from your utility provider. Residentially zoned areas are not normally run in a true 3 phase system. So in order to provide a three phase they will do a split phase using two transformers and provide you with a delta, or the three phase with 120V to ground on two phases and 240V to ground on the other. If one phase fails, the other two can still supply power. Key Takeaways of Three-phase Power. Industries in the U.S. rely on 480 V three-phase power for running their load. It is also used in Mexico, Canada, and South America. The three-phase 480 V supply can be transmitted through a three-wire Delta connection or a four-wire Wye connection. The output AC voltage will always be lower thean the input voltage. If you run the motor on 30 Hertz output the drive will put out 60% output voltage but your torque should be about the same. If a motor is running too slowly either the cooling fan will not blow enough air or the induced voltage in the rotor will drop to zero. If you use this formula you will find that using 480 V as to using 380V to power the motors will just increase to motor torque. Running a 380-volt motor at 480-volt most likely will not burn the motors up. I have done this a couple times and the motor ran just fine. It will depend on the condition of the 380 volt motors and what they are driving. However, when you use it at a higher voltage than it was designed for, the motor windings saturate and the motor consumes more energy as heat, so the current is higher at the higher voltages. For 60Hz applications, the V/Hz ratio of the design, 380/50, is 7.6:1, which is almost exactly the same as 460V 60Hz, so the motor is fine with 460V 60Hz Would like to run a five hp 230 volt three phase motor (having 6 leads) on a 480 volt three phase bus via a VFD. Have Delta and AB drives available. Did a quick test of this idea today using one of the 480v Delta drives with these settings: 480 volts and 120 hz . figuring the motor operating at 60 hz, given rudimentary linearity of the v/f can be used to monitor and then tune out instability problems. DC bus ripple is observed by the 580 series parameter 97.135 “UDC ripple.” The ripple trip value for the 580 series is 75 VDC for a 460-480 V line. Parameter 97.48 “UDC Stabilizer” is a setting that tunes and stabilizes the DC bus voltage. Start at the lowest setting of 97. motor protection tables time delay ul class rk1 or rk5 fuse ampere rating motor running protection (used without properly sized overload relays) motor full-load amps back-up motor running protection (used with properly sized overload relays) motor full-load amps motor service factor of 1.15 or greater or with temp. rise not over 40°c. motor Thanks waross (Electrical) 11 Jul 17 15:31 The simple answer is yes. 4.6 A x 415 V x 1.73 = 3303 VA 3 kW x 746 W/HP = 2238 VA 2238 VA / 3303 VA = 68% The long answer is: If the combined efficiency and power factor is above 68%, AND if the motor is running at rated frequency and speed the motor will be capable of 3kW. Bill -------------------- Or you may refer to the equipment nameplate to obtain the ampere re-quirements of the connected load. Be sure to select a transformer kVA rating equal to or greater than the anticipated connected load. kVA = Wattage (1000 x Power Factor of the Load) Transformer Load expressed in motor horsepower: 5 out of 5 based on 11 reviews | Write a review. $5,990.75. High quality three phase 10 kVA frequency converter (AC power supply), convert 480V/460V 60Hz to 380V/400V 50Hz by inner step-up & step-down transformer, adjustable output frequency & voltage suitable for industrial equipments. Input Voltage (Three Phase) *. To convert your 380/220 Y supply to 220 delta or 220/127 Y, you need a transformer. The motor controller brochure seems to indicate that it can operate on 220 single-phase, but the manual indicates that a different model is required for single-phase. If there are other motors on the machine, they may also require three-phase power. .

can you run a 380v motor on 480v