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Mathematically, just divide 480 by the square root of three.
Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
Wiki User
∙ 12y ago
Wiki User
∙ 14y ago3 phase 480V is three phases of 277V in other words if you have a 480V three phase panel each single breaker is a 277V feed if this doesn't answer your question ask it in a little more detail
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∙ 11y agoAdd your answer:
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How do you convert 220V 3 phase electric to 220V 1 phase electric?
You can either have an electrician modify the electronics inside (sometimes not possible) or use an external step-down transformer to convert the voltage (not designed for permanent use).Another Perspective:It all depends on the type of appliance. An appliance that uses a lot of resistance current might be a little expensive to convert. If it's a simple appliance you can easily change some motors from 240 to 120 by changing the wiring, and often controls are already running on one leg of a 240 V supply. But the transformer idea is not necessarily a good idea. It might be cheaper to simply have an electrician run a 240 V line for the appliance.
Disadvantages of 3 phase induction motor?
One of the disadvantages of the 3 phase induction motor is that it requires a three wire supply. The other disadvantage is that the 3 phase induction motors have poor starting torque and high have in the rush currents.
Why do you balance single phase loads across a 3-phase supply system?
On a Delta 3-phase you connect the single phase loads between pairs of the 3-phases. Warning both sides of these loads will be hot! You may want to use 3 isolation transformers so that the real loads have a neutral line.On Y 3-phase you connect the single phase loads between one of the 3-phases and neutral.In each case to balance the loads, try to put similar loads on each phase (or pair of phases).
Three phase voltage in india?
It is 230V single phase and 440V in 3 phase system at 50 Hz.AnswerIf the single-phase voltage is 230 V, then the three-phase voltage must be 400 V, not 440 V. The line voltage is 1.732 times the phase voltage.
What is phase fail protection?
In a 3 phase power system, say for a 3 phase motor - it is necessary to have all three phases intact to be able to run the motor efficiently, safely. If any one phase fails , the motor still continues to run but the temperature raises rapidly, due to high current. The motor winding can burn out, can trip off due to overload. Hence a device called phase failure relay is connected. It constantly reads all the 3 phases and cuts off the main supply in case any one phase fails.
How can you run a 220v 3-phase 60hz motor on a 380v 3-phase supply?
Not advisable, the voltage differential is too great.
What is the 3-phase step-down transformer capacity in kVA 380V-220V for 4.5kW motor?
5 kva
Can you convert 120v household into 220v 3 phase for a machine?
You can buy a converter.
If you are given that the line to line voltage is 380V how do you calculate the voltage of each of the 3-phase's?
380V ÷ √3 = 219.4
What is 3 phase voltage in Nigeria?
380V
What is the 3 phase voltage measurement in Dublin Ireland?
220/380V
What is the breaker size for a10kw 380v 3 phase power supply?
10amp
How do you connect a 460V 3 phase motor 60Hz with 380V 50Hz 3 phase supply?
How can I use 380v 3 phase to power 220v 3phase motor?
f your supply is a Y connected transformer (4 wires COM) with a phase to phase voltage of 380 volts (voltage between any two of the hot wires) , utilizing a true Y connection to your load (connections of one hot lead and neutral for each phase to your load will give a voltage of 380 ÷ sqrt 3 = 380 ÷ 1.732 = 220 volts.
How many amperes for 3 phase 220v 5 tonner?
50 Amps Single Phase 20 Amps Three Phase
What is the full load current of 200kW 380V 3-phase generator with 0.8 lagging power factor?
304 Amperes
How do you run 220v 3 phase motor on 575v?
First of all, your power source must be 3-phase if you want to run the motor, then you need a step-down 3-phase transformer to give 220v 3-phase output.
