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480 v three-phase is a type of supply used in the US for small factories and businesses needing up to a few hundred kilowatts of power. It provides three separate 277 v single-phase supplies and lighting and other appliances are available for 277 v.
480 v split-phase is a different type of supply used in the UK and it is a single-phase supply with a centre-tap on the secondary, supplying two live 240 v lines and a neutral. This type of supply is normally used for a remote group of houses that might be 300-400 yards from a transformer fed from a single-phase 11 kV spur.
What else can I help you with?
What is the voltage between each lead of a 480 volt three phase delta secondary?
A 480 v three-phase system has 480 v between live lines and 277 v from each line to the neutral. This type of supply is common in North America for supplying for example small factories that need more power than a 120/208 v three-phase system can supply.
What is the output in amps on a single phase 480v transformer rated for 1000va at 240v?
To find the output in amps for a single-phase transformer, you can use the formula ( \text{Amps} = \frac{\text{VA}}{\text{Volts}} ). For a 1000 VA transformer operating at 480 V, the output current would be ( \frac{1000 \text{ VA}}{480 \text{ V}} \approx 2.08 \text{ A} ). This is the output current at 480 V. If you need the output at 240 V, it would be ( \frac{1000 \text{ VA}}{240 \text{ V}} \approx 4.17 \text{ A} ).
How many amp in 480 vac 3- phase primary transformer if the secondary it's 120 vac?
This 480-v three-phase transformer probably has a 208-v three-phase secondary which has 120 v from each line to neutral. In that case the primary current is 0.433 times as much as the secondary current, so 100 amps in the secondary means 43.3 amps in the primary.
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.
What does a 350 kva transformer draw at 480 volt?
A 350 kVA transformer operating at 480 volts would draw approximately 416.67 amps of current. This is calculated using the formula: Current (I) = Power (kVA) × 1000 / Voltage (V). Thus, I = 350 kVA × 1000 / 480 V, which results in around 729.17 amps. However, it's important to note that this value assumes a power factor of 1; if the power factor is less than 1, the current draw would be higher.
What is the voltage between each lead of a 480 volt three phase delta secondary?
A 480 v three-phase system has 480 v between live lines and 277 v from each line to the neutral. This type of supply is common in North America for supplying for example small factories that need more power than a 120/208 v three-phase system can supply.
What is the nominal voltage of a 150 kW 480 v generator?
480V.
Will a step up transformer from 208 to 480 save on power bill?
No, you are billed for the energy used so in principle the voltage does not affect the cost. The equipment used is designed for a set voltage and cannot be used on a different voltage. The reason to choose 480 v instead of 208 v would be based on the size of the site, and if there are distances of more than 300 ft involved in the power supply it might be economical to start with a 480 v system. The choices are between 120/208 v and 277/480 v so that using the higher voltage will require the installation of 277 v lighting
What is the resistance of a 120 volt lamp draws 0.25 amperes of current?
v/i=r so 120/0.25=480 480 ohms is the resistance
Why are commercial lights 277 volts?
Many commercial buildings in the US are supplied with 480 V, three-phase utility power. The phase to neutral voltage of a 480 V system happens to be 277 V. 277 V lighting can be fed directly, eliminating the need for additional transformers and related gear.
What will be cable rating for 5kva 3phase system?
It depends on the voltage: 208 v 14 amps, 415 v 7 amps, 480 v 6 amps.
How much resistance must be placed in a 240 volt circuit in order to limit the power to 480 watts?
To limit the power to 480 watts in a 240-volt circuit, you can use the formula ( P = \frac{V^2}{R} ), where ( P ) is power, ( V ) is voltage, and ( R ) is resistance. Rearranging the formula gives ( R = \frac{V^2}{P} ). Substituting the values, ( R = \frac{240^2}{480} = \frac{57600}{480} = 120 ) ohms. Therefore, a resistance of 120 ohms must be placed in the circuit.
How many times can 72 go ino 480?
To find out how many times 72 can go into 480, divide 480 by 72. This calculation gives you approximately 6.67, meaning 72 can fit into 480 a total of 6 times with a remainder. Therefore, 72 goes into 480 six full times.
How many times does 10 go into 480?
To find out how many times 10 goes into 480, you would perform a division operation. Divide 480 by 10 to get the answer. The result is 48, meaning that 10 goes into 480 a total of 48 times.
What is the output in amps on a single phase 480v transformer rated for 1000va at 240v?
To find the output in amps for a single-phase transformer, you can use the formula ( \text{Amps} = \frac{\text{VA}}{\text{Volts}} ). For a 1000 VA transformer operating at 480 V, the output current would be ( \frac{1000 \text{ VA}}{480 \text{ V}} \approx 2.08 \text{ A} ). This is the output current at 480 V. If you need the output at 240 V, it would be ( \frac{1000 \text{ VA}}{240 \text{ V}} \approx 4.17 \text{ A} ).
What is the meaning of V V T I you?
what is VVT-I
Hp equals 60 and volts equals 480 what are the amps?
746 Watts per horsepower / 480 volts x power factor x efficiency x 1.73 = amps assuming that the motor is three phase. 746 x 60 =44760 watts divided by 480 x 1.73 = 53.9 amps ( If the pf and eff. information is not known this will put you in the ball park)
