Hello,
I am a bit troubled over calculating the starting current for a motor I want control.
I have here a 0.15KW 3 phase induction motor. It will be wired in Delta configuration.
Specs:
Nominal speed: 880rpm
Nominal current: 0.72A
Starting to nominal current ratio: 2.1A
Nominal torque: 1.63Nm
efficiency: 50%
Nominal power factor: cosφ=0.58
Starting to nominal current ratio: 2.1A
Starting to nominal torque ratio: 2.2Nm
On the nameplate I saw that A(Amps) is rated at 1.25A when delta wired @ 230V.
Also, the motor is fitted with a worm gear unit so that
Output speed: 9 rpm
Output torque: 72Nm
What I' d like to know is
1) Do the Amps rated on the nameplate refer to the Full load current?
2) If yes, am I correct with calculating the starting current?
(Starting to nominal current ratio) * Full Load Current= 2.62A
3) Does the worm gear unit reduces or increases the duration of the starting current, and is it possible to quantify it?
Thank you in advance
I am a bit troubled over calculating the starting current for a motor I want control.
I have here a 0.15KW 3 phase induction motor. It will be wired in Delta configuration.
Specs:
Nominal speed: 880rpm
Nominal current: 0.72A
Starting to nominal current ratio: 2.1A
Nominal torque: 1.63Nm
efficiency: 50%
Nominal power factor: cosφ=0.58
Starting to nominal current ratio: 2.1A
Starting to nominal torque ratio: 2.2Nm
On the nameplate I saw that A(Amps) is rated at 1.25A when delta wired @ 230V.
Also, the motor is fitted with a worm gear unit so that
Output speed: 9 rpm
Output torque: 72Nm
What I' d like to know is
1) Do the Amps rated on the nameplate refer to the Full load current?
2) If yes, am I correct with calculating the starting current?
(Starting to nominal current ratio) * Full Load Current= 2.62A
3) Does the worm gear unit reduces or increases the duration of the starting current, and is it possible to quantify it?
Thank you in advance