# How do you calculate energy consumption of a motor?

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Calculate the power the motor consumes while in operation. The equation is W = AV(sqrt 3) where A is amperes, V is volts, and sqrt 3 is the square root of 33 (about 1.73). W is the power consumption in watts. For example, if the electric motor uses 50 amps at 240 volts, the wattage is 50 x 240 x 1.73, or 20,760 watts.

## How do you calculate power consumption of a motor per hour?

Electric Motor power consumption Formula:

The total power consumption E(kWh) is equal to 0.746 times of multiplication of total operating hours t(h) in hour, the rated power P(HP) in HP and the X percentage of the load. Total Power consumption = 0.746 * Horsepower * load percentage * Operating Hours.

## What is the formula for calculating energy consumption?

Hence, the energy consumption formula or the power consumption formula is given as below: E = P*(t/1000); where E = energy measured in Joules or kilowatt-hours (kWh), P = power units in watts, and t = time over which the power or energy was consumed.

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## How do you calculate the kW of an electric motor?

Multiply the motor voltage by the full-load current. The result is in watts. Divide watts by 1,000 to give kilowatts. For example, 230 volts x 20 amps = 4,600 watts; 4,600 watts divided by 1000 = 4.6 kilowatts.

## How much energy do motors consume?

You know the statistics… according to the U.S. Department of Energy (DOE), electric motors consume more 50 percent of all electrical energy in the United States and more than 85 percent of industrial production electrical energy.

## How do you calculate energy consumption per kWh?

To get the number of kWh, you just multiply the number of kW by the number of hours the appliance is used for. For example, a device rated at 1500 W that’s on for 2.5 hours: 1500 ÷ 1000 = 1.5. That’s 1.5 kW.

## How do you calculate the power consumption of a 5hp motor?

Output mechanical energy: 5 HP X 746 Watts = 3,730 Watts or 3.73 kW. As the output mechanical energy is the result of the motor performing at 80% efficiency, the power consumed by the 5 HP motor will be 3.73 kW X 100 ÷ 80= 4.66 kW.

## How is motor power factor calculated?

It is found by multiplying (kVA = V x A). The result is expressed as kVA units. PF expresses the ratio of true power used in a circuit to the apparent power delivered to the circuit.

## How do you calculate motor current?

Effect Of Line Voltage On Locked Rotor Current (IL) (Approx.)

Electrical Formulas (For more formulas see “Formulas”)

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To Find Alternating Current
Single-Phase Three-Phase
Amperes when kVA are known kVA x 1000 E kVA x 1000 1.73 x E
Kilowatts I x E x pf 1000 1.73 x I x E x pf 1000
kVA I x E 1000 1.73 x I x E 1000

## How do you calculate the power of an AC motor?

A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A. However, determining the power in watts for an AC source must include the power factor (PF), so W = V x A x PF for AC systems.

## How much electricity does a 2 hp motor consume?

typical electricity consumption is 746 watts per single Horse-power. so 2 HP = 1.48 Kw per hour of operation.

## How much electricity does a 10 hp motor consume?

A 10 HP motor consumes 7.46 units in an HR. , former Retired Assistant Engineer in HMT Ltd. If it is a 3 phase motor it works on a voltage of 415 volts and 15 HP means it will be 15×746 watts =11190watts, and it draws a current of 11190 ÷415 =26.96 amperes, at full load.

## How do you calculate 3 phase energy consumption?

Calculate three-phase motor power consumption by multiplying amps by volts by the square root of three (W = AV(sqrt 3). For example, if the motor is drawing 30 amps at 250 volts, you have 30 x 250 x sqrt 3 (about 1.73) = 12,975 watts).