Current withdrawan when induction motor doesn’t have any mechanical load (decoupled from mechanical equipment). No load current is around 40 to 50 percentage of full load current. But in case of smaller rating motor less than 1.5KW current value will be around full load current.
What is the no load current?
[′nō ¦lōd ′kə·rənt] (electricity) The current which flows in a network when the output is open-circuited.
Why no load current is more in induction motor?
Magnetic circuit of Induction motor has large reluctance than transformer due to air gap between stator and rotor, more mmf(magneto motive force is equal to product of current and number of turns) or more current is required to set up working flux in Induction motor, this is the reason of high no load current in …
How do you calculate no load?
The calculation of no-load (Iron) losses is based on the ratio of the voltages being measured and the rated voltage squared and the results multiplied by the no-load value from the data sheet. The Quad 4 meter has what is referred to as an Iron constant (KWFe).
How many amps should a motor draw with no load?
You can use 20 amp fuses and should be OK if the motor is good. It sounds like your no-load current is in the right ball park, but you should check the manufacturers data for actual no-load current. You also need thermal overloads if not internal to the motor.
What is full load current of motor?
Definition of ‘full load current’
A full load current is the largest current that a motor or other device is designed to carry under particular conditions. … A full load current is the largest current that a motor or other device is designed to carry under particular conditions.
What is meant by no load?
(noʊ loʊd) adjective. (Finance: Investment) A no-load fund is a fund sold directly by the investment company with no fees or commissions. A true no-load fund has neither a sales charge nor a distribution fee to purchase shares.
Why is DC motor current so high?
Answer: The starting current is high as there is no back EMF or counter EMF present in the armature circuit because atstarting counter EMF is zero. … It’s armature has very less resistance due to this it need more current at starting time. Hence DC starters are used to limit the starting current ofmotor.