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In an ideal xmfr, the power in equals power out and only the voltage and current

changes.

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How many amps can a 480 to 120 vac 3KVA transformer handle?

If the transformer is three phase the calculation is I = 30,000 / 1.73 E. If the transformer is single phase the calculation is I = 30,000 / E. (Where I = current and E = secondary voltage) It is important to note the voltage in the first formula is line to line (typically how it is specified in three phase power systems), and the second formula it is line to neutral.


What is meant by the term ideal transformer?

ideal transformer is that which has no power losses.if any transformer transfer power to secondary without power loss then that call a ideal transformer


Is transformer an amplifier?

No. In an amplifier, Power Out > Power in. In a transformer Power Out ~= Power In (minus internal losses). An AC generator is more like an amplifier than a transformer.


What is the difference between power transformer and instrument transformer?

A power transformer is used to provide power (to your home, for example), an instrument transformer is used to measure voltage or current (for metering, for example).


What will happen you f the rated power of transformer is changed?

You cannot 'change' the 'rated power' of a transformer except by changing the transformer for another one. You can, though, operate the transformer below its rated power or, for short periods of time, operate the transformer aboveits rated power.


What is meant by the term transform?

ideal transformer is that which has no power losses.if any transformer transfer power to secondary without power loss then that call a ideal transformer


How many amps can 30 kva transformer 575 volts to 480 volts gives?

for three phase the calculation is 30,000 = 1.73*V*I - simple as that. For single Phase the calculation is 30,000 = V*I - simple as that It is important to note the voltage in the first line is Line to Line (typically how it is specified in three phase power systems), and the second line it is Line to neutral. A 30KVA transformer is the same as 30,000VA to find out the Amps you need to divide the voltage if the transformer is single phase for example: 30,000VA / 480V = 62.5 Amps The calculation for a 3 phase transformer is the VA / voltage / 1.73 for example: 30,000VA /480V / 1.73 = 36.12 Amps


How a rectifier transformer deffer from a power transformer?

rectifier transformer converts acinto dc.but,power transformer convert step up or step down ac energy without changing frequency


What size ground wire for a 30 kva transformer?

The size of grounding wire is based on the amperage output of the transformer. The voltage of the transformer needs to be stated. Without this voltage a calculation can not be made. Amps = Watts/Volts = 30000/?.


What should be the rating of the transformer in KVA to cater to 55KW motor?

To determine the transformer rating in KVA for a 55 kW motor, you can use the formula: KVA = KW / Power Factor. Assuming a typical power factor of 0.8 for motors, the calculation would be KVA = 55 kW / 0.8 = 68.75 KVA. It's advisable to round up, so a transformer rated at 75 KVA would be appropriate to ensure adequate capacity.


What does LT stand for in power transformer?

Transformer Inductance?


Bil of power transformer?

B.I.L. stands for Basic Impulse Level for the transformer. It should be on the faceplate of the transformer.