What is the cost formula for electricity costs?
What is the cost formula for electricity costs?
power consumption * usage time = power consumed . So we’ll consume 10000 watt hours or 10 kilowatt hours of power every day. The electricity cost is cost = power consumed * energy price .
How do you calculate current in 3 phase?
Three Phase Current – Calculation
- kW = kVA x pf.
- kVA = kW/pf.
- kVA = kW / power factor = 23/0.86 = 26.7 kVA (26700VA)
- Current = VA / voltage = 26700 / 230 = 116 A.
- VLL =√3 x VLN
- VLN = VLL / √3.
- kVA = kW / power factor = 12 / 0.86 = 13.9 kVA (13900 VA)
- Current = VA / voltage = 13900 / 230 = 60 A.
Is 3 phase current per phase or total?
If a three-phase supply is available, then the 24,000 watts are divided by 3, meaning that 8000 watts is being used per phase. Now the current per phase is also down to a third of what it would be with a single phase supply (about 30 amps per phase, rather than 100).
Is 3 phase current rating per phase?
If we had 8000 watts and 400vac single phase the current would be: 8000/400=20 amps. Because it is three phase, then each phase will see about 20/3 which is roughly 7 amps per phase if it is set up as a Wye system.
How much more efficient is 3 phase?
Comparing single-phase vs. three-phase power, three-phase power supplies are more efficient. A three-phase power supply can transmit three times as much power as a single-phase power supply, while only needing one additional wire (that is, three wires instead of two).
How to calculate 3 phase power?
How to Calculate 3 Phase Power Single-Phase vs. Three-Phase Power. Three-Phase Power Formula. The most important three-phase power equations relate power ( P , in watts) to current ( I , in amps), and depend on the voltage ( V Converting kW to Amps. Converting Amps to kW.
What is the formula for three phase power?
Apply Ohm’s Law Formula. Arrange the equation for three-phase power to solve the current (amps): Current (amps) = power (watts) ÷ voltage (volts) ÷ square root of 3 (1.732) ÷ power factor; I = P ÷ (V_1.732_p.f.).
What are the 3 phase voltages in the USA?
A 3 Phase-Wye connected system consists of three hot lines, or phases, commonly referred to as X, Y, Z, a neutral, and a ground wire for a total of five wires in a power distribution cable. In North America the most common 3 Phase-Y voltages are either 120/208 VAC or 277/480 VAC, while internationally the most common 3 Phase voltage is 230/400 VAC.
How to calculate three phase amperage?
Divide the power consumption in watts by the line voltage multiplied by the power factor to find the amperage. For three phase circuits the power factor is the square root of 3. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3.
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