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
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.
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.
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.
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
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.
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.
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).
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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.
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.
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.
The voltage is not 'calculated', it's determined from the specifications of the unit you are going to use.
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.
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.
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.
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
Rated voltage is the voltage at primary side. Rated current can be found from the equation, Rated Current= Output KVA / Output rated voltage