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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.
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).
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.
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.
