What is 10 to a negative power?
Negative powers
| Name | Power | Number |
|---|---|---|
| tenth | −1 | 0.1 |
| hundredth | −2 | 0.01 |
| thousandth | −3 | 0.001 |
| ten-thousandth (Myriadth) | −4 | 0.000 1 |
What is negative power factor?
A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source. In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred.
Can power factor be more than 1?
Since power factor is a cosine function of the relative phase angle between current and voltage there are no possible values greater than one. A power factor of one is achieved when the voltage and current are in phase and there’s no reactive power.
What is a good power factor?
The ideal power factor is unity, or one. Anything less than one means that extra power is required to achieve the actual task at hand. All current flow causes losses both in the supply and distribution system. A load with a power factor of 1.0 results in the most efficient loading of the supply.
What is power factor in 3 phase?
Three-Phase Power Formula This simply states that the power is the square root of three (around 1.732) multiplied by the power factor (generally between 0.85 and 1, see Resources), the current and the voltage.
What is the formula for KVA 3 phase?
To convert A to kVA in a three-phase circuit use the following formula. kVA is equal to the square root of 3 (1.732) times amps times volts, divided by 1,000. For example, find the apparent power in kVA for 440 volt three-phase circuit with 150 amps of current.
How many HP is 1kva?
Equivalent kVA and Horsepower Ratings
| kVA | HP |
|---|---|
| 750 kVA | 804.3 HP |
| 875 kVA | 938.3 HP |
| 1,000 kVA | 1,072 HP |
| 1,125 kVA | 1,206 HP |
What is kVA formula?
Use the formula: P(KVA) = VA/1000 where P(KVA) is power in KVA, V is voltage and A is current in amperes. For example, if V is 120 volts and A is 10 amperes, P(KVA) = VA/1000 = (120)(10)/1000 = 1.2 KVA.
How many amps is 60 kVA?
272.73 Amps
How many amps is 70 kVA?
GENERATOR AMP RATINGS – THREE PHASE EXTENDED
| kVA | kW | 120 |
|---|---|---|
| 69 | 55 | 331.2 |
| 75 | 60 | 361.3 |
| 80 | 65 | 391.4 |
| 88 | 70 | 421.5 |
How many watts is 1kVA?
This means that the formula for watts = volts x amps x power factor. For example, 1kVA UPS from N1C has the capacity to power 900 watts of connected equipment. This means the UPS has a “power factor” of 0.9.
How do I convert kVA to kW?
Power Factor
- Apparent power (kVA) x power factor (pf) = actual power (kW)
- e.g. 100 kVA x 0.8 = 80 kW.
- The formula for converting kW into kVA is:
- Actual power (kW) / power factor (pf) = apparent power (kVA)
- 1 ton = 200 BTU/minute.
- 1 ton = 12,000 BTU/hour.
- 1 ton = 3.517 kilowatts.