# Frequent question: How do you calculate the cost of electricity for a 3 phase motor?

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## How much does it cost to run a 3 phase motor?

For example, a 460-volt, three-phase, standard efficiency 100 HP motor operating under full load for 8,760 hours per year will probably cost just over \$48,000 per year to operate at an electric rate of \$0.10 per kWh.

## How do you calculate the power consumption of a 3 phase motor?

Calculate threephase 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).

## How is electric motor power calculated?

By taking the voltage and multiplying it by the associated current, the power can be determined. 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.

## How much electricity does a 3 HP motor use?

If the motor is fully loaded, it will provide output power of 3HP = (3 X 0.746) kW = 2.24 kW. Electrical input power = output power / (Efficiency /100). Unit consumed = Power in kW X numbers of hours of operation. = 59.76 units.

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## What is the 3 phase power formula?

3-Phase Calculations

For 3-phase systems, we use the following equation: kW = (V × I × PF × 1.732) ÷ 1,000. Again, assuming unity PF and solving this equation for “I,” you get: I = 1,000kW ÷ 1.732V.

## How much electricity does a 7.5 hp motor use?

Let us assume that motor is operating at full load so it will consume 7.5 hp or 5.59 or 5.6 kW approx. Let us assume motor has efficiency of 90 %, motor at full load gives around 90 % efficiency, so the power input to motor is 5.6/0.9=6.22 kW. Energy consumption in 2 hrs = 6.22×2=12.44 KWh or 12.44 unit.

## How many volts is a 3 phase line?

3 phase system is expressed with line voltages. The line votage is 440 volt. Also the voltage between any one phase and neutral for a 3 phase system is 240 volts.

## How much electricity does a 1.5 hp motor use?

1.5 hp = 1 kw =0.3 kwh for 20 minutes per day.

## How many amps is a 3 phase supply?

On a 3 phase 4 wire system at 220/380 volts, a load of 60KW total or 20kw per phase, MUST be about 100 amps per phase. Therefore a measured phase current of 350 amps implies that the actual load must be a lot higher than 60kw. Probably about 200kw in fact.

## How much electricity does a 1 hp motor use?

So, 1 HP for 24 hour = 746×24= 17904 Watt-hour which is equal to 17904/1000= 17.904 units. Hence, 17.904 units of Power will be consumed by the 1 HP motor when run continuously for 24 hours.

## What is the price of electric motor?

Top Selling Motors Price List in India

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Latest Motors Models Expected Price
Oswal 3HP 1440rpm Single Phase Induction Electric Motor, OM-8-(CI)ATCHK ₹9744
Oswal 3HP 1440rpm Single Phase Induction Electric Motor, ON-11-(CI)-1PH ₹9887
Oswal 7.5HP 1420rpm Three Phase Squirrel Cage Induction Electric Motor, OM-40-FOM ₹17287 