🎈 Can You Run A 380V Motor On 480V

The problem you will run into here is that your line voltage is lower. This means that you cannot get full 460V output power to this motor when in China. But you can get full torque at 50 Hz output, which will take place at 380V output. You can accept that as it is, or you can allow the VFD to give the motor 60Hz. In this video, I try to explain to you what you have to do to run such motor from a single phase. That will make it 240V 3 phase. Connect a capacitor as shown to drive the 2nd phase. The torque characteristic won't be as good though. Use the rated current on the name plate & multiply it by √3 to calculate the capacitor value. Use a capacitor rated for motor run use, or power factor correction capacitor (s). Re: Effect of 380 & 400 Volt Motor on 415 Volt Supply. 03/29/2012 12:26 AM. see every motors are designed with some tolerance in rated parameter. if your combined variation is ±10% for voltage & frequency, it'll work for 100% o/p. but contineous variation is not desired. As you can see, the more amps and volts you have, the more powerful 3-phase electric motor you have. Quite similarly, a higher power factor is proportional to higher power output. You can use this example to see how the 3-phase power calculator works: A 100 amps motor on a 240V 3-phase circuit with a 0.9 power factor produces 37.41 kW of The formula to convert kVA to amps is: [1] I (A) = S (kVA) × 1,000 V (V) This means that the current I in amps is equal to the apparent power S in kVA times 1,000, divided by the RMS voltage V . For example, let’s find the current for a 220-volt circuit with 25 kVA of apparent power. I(A) = 25 kVA × 1,000 220 V. I(A) = 113.64 A. Original motor with 60Hz (V) 480v. 460v. 420v. 440v. 380v. Be used in 50Hz power supply with voltage reduction (V) 400v. 383v. 367v. 350v. 317v. The output power is 83% of the original power. Be used in 50Hz 380v power supply directly. It can be used with reducing output power. It can not be used for a long time, or even can not be used. 230 volts motor - 3-phase : 2.5 amps/hp; 460 volts motor - 3-phase : 1.25 amps/hp; Always check nameplate information before designing protective devices, wiring and switch gear. Single-Phase Motors - HP and Full-Load Currents. A motor of a given rated horsepower is expected to deliver that quantity of mechanical power at the motor shaft. Generally, Electric supply and service providers install a single phase energy meter when load is less than 7.5kW (10HP) in domestic areas (consumer unit for home). If the limit is exceeded, then it’s recommended to install a 3-phase energy meter for consumer units. When load exceeds from 7.5 kW, then 3-phase electrical wiring is recommended A motor designed for 380V 50Hz, as commonly used in the EU, is therefore designed for a V/Hz ratio of 7.6:1. If you supply it with 480V (which is what a 460V motor is designed for), the ratio is 8:1, virtually the same. the motor will spin 20% faster because of the difference in frequency, but that can't be helped, you bought 50Hz equipment. 5. It is actually quite simple. It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star. This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. 208/120 is the voltage for a delta (208) / star (120), connected system. You would have 208 volts across each of the loads you gave and can find the current using Ohm’s law (i.e. A-B 56,000/208 = 269 A in that branch). Strictly speaking you should be using kVA (which you can obtain by dividing the watts by the power factor). .

can you run a 380v motor on 480v