Three Phase Heater Current Calculation

Typical 3 phase wiring diagrams and equations for resistive heaters definitions.

Three phase heater current calculation.

The phase current i in amps a is equal to 1000 times the power p in kilowatts kw divided by 3 times the power factor pf times the line to neutral rms voltage v l n in volts v. Volts line current 3 phase amps kw x 1000. Single three phase line kva calculator is an online tool used in electrical engineering to measure the unknown quantity by two known quantities applied to the below formulas for single phase and three phase connection. User manuals specification sheets cad drawings and more.

The formula to find amps for a three phase ac circuit is a little different than the formula for a single phase circuit. Amps kw 1 000 3 pf volts for example find the current of a 25kw three phase generator with an efficiency of 80 at 240 volts. The three phase current as you are trying to calculate it does not exist. Enter the phase to phase v ll voltage for a 3 phase ac supply in volts.

Ohm s law calculator 3 phase delta wye calculator. 120 208 220 230 240 277 440 460 480. Rated kw factors rated voltage applied voltage. Volts x 1 73 applied vs.

V v i a r ω the power p in watts w is equal to the voltage v in volts v. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. For both wye and delta balanced loads wye and delta equivalent. I a 1000 p kw 3 pf v l n v typical power factor values.

Line current 1 phase amps kw x 1000. You still have your three phase system with the current in each line being slightly different if all the line currents were the same it would just be a balanced three system. The three phase power calculator calculates the active and reactive power current from the following parameters. Chromalox is a thermal technology company.

Locate actual applied voltage. Calculate reset. Ac ohm s law calculator. Enter the the current in amperes a.

In the a phase you have 80 6a b phase 65 8a and c phase 73 2a that s it. V p phase voltage v l line voltage i p phase current i l line current r r1 r2 r3 resistance of each branch w wattage w delta 3 w wye w odelta w delta w owye w wye. Locate heater rated voltage. Leverage watlow s growing toolkit of calculators equations reference data and more to help design your thermal system.

Do not use typical power factor values for accurate calculations.