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Assumption:

F= 60Hz

V= 1v is equal also to I=1amp.

PF= 0.85

Single Phase: Three Phase:

S = IV pf / 1000 S = 1.73 x I x V x PF/1000

= 1 x 1 x 0.85/1000 = 1.73 x 1 x 1 x 0.85 /1000

S = 0.00085KVA S = 0.0014705KVA

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How many KVA in a 3 phase 4 wires 3x230 400V 40 100A 50Hz?

To calculate the kVA for a 3-phase system, you can use the formula: kVA = √3 × Voltage × Current / 1000. For a 3-phase system with a line voltage of 400V and a current of 100A, the calculation would be: kVA = √3 × 400V × 100A / 1000 ≈ 69.28 kVA. Therefore, the system is approximately 69.28 kVA.


How do you calculate the output voltage of a transformer if kva rating is known?

You can't determine the output voltage of a transformer by knowing kva. Transformers will be marked as to input and output voltages. Some will have multiple input and output voltages. The output voltage depends on the ratio of coil turns between input and output.


What is 350 amp in KVA?

To convert amps to kilovolt-amperes (kVA), you can use the formula: kVA = (Amps × Voltage) / 1000. The voltage level is essential for the calculation, as kVA is a function of both current (in amps) and voltage (in volts). For example, at a voltage of 400V, 350 amps would be approximately 140 kVA (350 × 400 / 1000). Without the voltage value, the kVA cannot be accurately determined.


What is the formula to calculate load voltage?

Power requirements are measured in KVA, which stands for Kilo-Volt-Amperes. To calculate the amount of power you require you would use the following formula. KVA = Volts * Amps / 1000


What is the kva rating of a transformer that has a secondary winding that's delivering 10 amps at 480 vac?

To calculate the kVA rating of the transformer, you can use the formula: kVA = (Voltage × Current) / 1000. In this case, the secondary winding delivers 10 amps at 480 volts. Therefore, the kVA rating is (480 V × 10 A) / 1000 = 4.8 kVA.

Related Questions

How do you calculate kva from amps?

At what voltage? If you know the voltage then, to get the amps those kilovolt-amps contain, you simply divide the kilovolt-amps by the voltage.


How many amps can you get from a 500Kva transformer?

The amps you can get from a 500 kVA transformer would depend on the voltage of the transformer's output. To calculate amperage, you can use the formula: Amps = Power (kVA) / Voltage. For example, if the output voltage is 480V, you would get approximately 1041 amps (500 kVA / 480V).


How do you calculate KVA when you know amps and voltage required?

Use the link below and scroll down.


How many amps in 40 kva?

To calculate the amperage of a 40 kVA load, you will need to know the voltage. The formula is: Amps = kVA / Volts. Assuming a standard line voltage of 120V, the amperage for a 40 kVA load would be approximately 333 amps.


How many KVA in a 3 phase 4 wires 3x230 400V 40 100A 50Hz?

To calculate the kVA for a 3-phase system, you can use the formula: kVA = √3 × Voltage × Current / 1000. For a 3-phase system with a line voltage of 400V and a current of 100A, the calculation would be: kVA = √3 × 400V × 100A / 1000 ≈ 69.28 kVA. Therefore, the system is approximately 69.28 kVA.


How do you calculate the output voltage of a transformer if kva rating is known?

You can't determine the output voltage of a transformer by knowing kva. Transformers will be marked as to input and output voltages. Some will have multiple input and output voltages. The output voltage depends on the ratio of coil turns between input and output.


How do you calculate the voltage that has to be kept for a 150 KVA solar power conditioning unit?

The voltage is not 'calculated', it's determined from the specifications of the unit you are going to use.


Two and an half kva equals how many ampere?

2.5 kVA means 2500 VA (volt-ampere). To calculate the amperes you need the voltage. 2.5 kVA x cos (phi) = 2.5 kW (kilowatts) if phi is 0 or power factor (phi) is unity.


What is 350 amp in KVA?

To convert amps to kilovolt-amperes (kVA), you can use the formula: kVA = (Amps × Voltage) / 1000. The voltage level is essential for the calculation, as kVA is a function of both current (in amps) and voltage (in volts). For example, at a voltage of 400V, 350 amps would be approximately 140 kVA (350 × 400 / 1000). Without the voltage value, the kVA cannot be accurately determined.


What size wire 100 kva transformer?

Wire sizing of a feed conductor is based on the amperage that a device draws. To calculate amperage from KVA a voltage of the supply has to be stated. Without this voltage and whether the transformer is single or three phase an answer can not be given.


What is the formula to calculate load voltage?

Power requirements are measured in KVA, which stands for Kilo-Volt-Amperes. To calculate the amount of power you require you would use the following formula. KVA = Volts * Amps / 1000


What is rated voltage and current in transformers and how to calculate them if given 50k VA?

Rated voltage is the voltage at primary side. Rated current can be found from the equation, Rated Current= Output KVA / Output rated voltage