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### Motor Calculations | EC&M

Jan 11, 2018· P = power in kW. ω m = Speed in r/min. Calculation: Find the shaft torque of the 10 hp induction motor whose rotor speed is 1500 r/min. Solution: τ ind = (10 hp * 746 kW/hp) / (1500 r/min * 2 π rad/r * 1 min/60 s) = 47.49 Nm. Starting Current calculator. I L = S start / (√3 * V T), where S start = Rated HP of the motor * Code factor

### Power Factor – Importance, Calculation and Correction ...

Figure 3 Relationships Between Power, Current, Power Factor and Motor Load Example: Input Power Calculation An existing motor is identified as a 40-hp, 1800 rpm unit with an open drip-proof enclosure. The motor is 12-years old and has not been rewound. The electrician makes the following measurements: Measured Values: V ab = 467V I a = 36 amps ...

### Hydraulic Motor Calculations - Womack Machine Supply Company

The common "in the field" estimate of KW power a 9" motor can handle (for short periods) is 100 KW. So using the above formulas, 144 volt system should be limited to about 700 amps, and the 288 ...

### Motor Sizing Calculations

Example: The electric horsepower of a motor with 120 volts and 10 amps is: HP = (120 x 10) / 745.7. Calculated out this gives an electric horsepower of 1.6092. (rounded to the nearest 10,000th) \$100 Promotion. Win \$100 towards teaching supplies! We want to see your websites and blogs. Enter Here. Calculator Popups

### How the sizing of electric motor is done for a electric ...

AC Power Calculator. This page shows the online AC Power calculator to calculate the AC current in a circuit for the given Power Factor Angle, Voltage, Current, etc. In Direct Current, the electric charge flows in only one direction. Whereas in Alternating Current, Electric charge in alternating current changes direction periodically.

### Pump Power Calculator

AC Power is an alternating current electrical energy consumed by the load connected in an electrical circuit, generally measured in horsepower, watts, kilo-watts or kilo-watts-hour. Whereas, single phase electric power is the electrical energy consumed by the load from phase & neutral.Three phase electric power is also the measure of electrical energy consumed by the load from three diffrent ...

### Pump Power Calculation | Neutrium

DC Power Calculator . Electric power is defined as the rate, per unit time, at which an electric circuit transfers its electrical energy. The SI unit of power is watt, one joule per second. A simple online DC power calculator to find out the power from the given values of voltage and current.

### Power Calculator for Generators: Convert kVA to kW, kW to ...

Motor Load Calculator. What does it cost each year to operate an electric motor? With the motor load calculator you can quickly estimate annual energy use and cost for any electric motor. The calculator is a versatile energy management tool which accepts measured current, full load amps or …

### Three-phase power calculator | jCalc.NET

Motor Sizing Calculations. There are three factors to calculate when sizing a motor; Moment of Inertia, Torque, and Speed. Moment of Inertia. Moment of inertia is the measure of an object's resistance to changes in its rotation rate. When an object is just sitting without any motion, the moment of inertia is 0.

### Electric Horsepower Calculator - CalcuNATION

AC Power is an alternating current electrical energy consumed by the load connected in an electrical circuit, generally measured in horsepower, watts, kilo-watts or kilo-watts-hour. Whereas, single phase electric power is the electrical energy consumed by the load from phase & neutral.Three phase electric power is also the measure of electrical energy consumed by the load from three diffrent ...

### Energy Calculators | Prism Engineering

Active power (kW) It is the true power transmitted to the load for energy conversion. For example, motor consumes the true power from the circuit and convert it into mechanical power, whereas lamps, on the other hand, convert the same into light.

### Determining Electric Motor Load and Efficiency

The highest rated motor is the 120V motor at 34 FLC. The other motor(s) in the group (phase) is the 10-hp 3-phase motor, as indicated by the shaded area. The NEC does not permit the use of motor nameplate FLA to determine the conductor ampacity; the branch-circuit short-circuit, and ground-fault overcurrent device size; or the ampere rating of ...

### Motor current calculator | jCalc.NET

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 …

### Calculations | Simple Electric Motors

Enter the motor power rating and select the appropriate unit (HP or kW) Enter the power factor and efficiency of the motor; Click on the "Calculate" button to see the results. Note: Please note that this calculator is provided for information purposes only. Typically, the FLA value is shown on the motor …

### Induction Motor Formulas with Calculations

Power calculation Torque calculation Motor capacity selection (tentative)-4-(2) Cyclic operation Selection outline Assessment Refer to page Calculate the required power and the load torque, and select a motor capacity that can be driven by the required power or higher. When selecting, also check

### Power Calculation | Maya Fan Air Engineering Pvt Ltd

For a 1-phase supply with power rating in kilowatt (kW): For a 1-phase supply with power rating in horsepower (hp): Note that the motor rated full load current is specified on the motor datasheet and stamped on the motor nameplate. However, this calculator is useful when only the motor rating is available and an estimate of the current is required.

### Technical Note No.31 CAPACITY SELECTION II [CALCULATION ...

RLA - "Running Load Amps" - current drawn during normal operation of electric motor. FLA - "Full Load Amps" - amount of current drawn when full-load torque and horsepower is reached for the motor.FLA is usually determined in laboratory tests.Note! - in the calculator above FLA is RLA + 25%. 1 hp = 0.745 kW; Related Mobile Apps from The Engineering ToolBox ...

### Motor Power Calculator - ElectricScooterParts

The most important three-phase power equations relate power (P, in watts) to current (I, in amps), and depend on the voltage (V).There is also a "power factor" (pf) in the equation that takes account for the difference between the real power (which performs useful work) and the apparent power (which is supplied to the circuit).Most types of three-phase power calculations are performed ...

### DC Power Calculator | DC Current Calculator

Sep 22, 2018· Hydraulic power Ph = Flow rate X Total developed head X Density X Gravitational constant. Pump Efficiency is the ratio of pump input and output power. i.e Efficiency of the pump is the ratio water horse power to break horse power. Pump input power calculation formula or pump shaft power calculation formula. Pump Input Power = P. Formula – 1

### AC Power Calculator | AC Current Calculator

Mar 16, 2018· 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). Convert watts to …

### Free Online calculation of electrical power and energy ...

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### How to calculate electric power of motor - Quora

Formula to calculate power, current and voltage in three-phase wiring (unbalanced load, different loads on each of three phases) : Pt=P1+P2+P3 P1=V*I1*cosφ1 I1=P1/(V*cosφ1) Same thing for each phase… V=P1/(I*cosφ1) Pt = total power of the circuit in watt (W) P1, P2, P3 = power of phase 1, phase 2 and phase 3 in watt (W)

### Amps to Kilowatts (kW) conversion calculator

For a 1-phase supply with power rating in kilowatt (kW): For a 1-phase supply with power rating in horsepower (hp): Note that the motor rated full load current is specified on the motor datasheet and stamped on the motor nameplate. However, this calculator is useful when only the motor rating is available and an estimate of the current is required.

### Motor current calculator | jCalc.NET

Hydraulic Pump Power. The ideal hydraulic power to drive a pump depends on. the mass flow rate the; liquid density; the differential height - either it is the static lift from one height to an other or the total head loss component of the system - and can be calculated like. P h(kW) = q ρ g h / …

### How to Calculate 3 Phase Motor Power Consumption | It ...

Example: How much torque does a motor develop at 1,200 psi, 1500 rpm, with 10 gpm input? Formula: GPM x PSI x 36.77 ÷ RPM = torque in inch pounds This company assumes no liability for errors in data nor in safe and/or satisfactory operation of equipment designed from this information.