0
To size cable the amperage must be known. Use the following equation to find amperage. Amps = kW x 1000/1.73 x volts x pf.
A standard motor's power factor between 10 to 100 HP is .86 to .92.
Amps = 90 x 1000 = 90000/ 1.73 x 440 x .92 = 90000/700 = 128 amps.
Motor feeders have to be rated at 125% of the motor full load amperage. 128 x 125% = 160 amps.
A 2/0 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 175 and 185 amps respectively.
Add your answer:
Earn +20 pts
Which size of copper cable in mm should use for 90kW 440V 3phase 50Hz motor and can you know how is calculate?
cable size for the 90kW motor is 3CX150sqmm aluminum cable
How can you run a 440V 3 phase 60Hz motor on a 440V 50hz 3 phase supply?
How can you run a 380v 50hz motor with 440v 60hz source?
Yes. It will make your motor a little faster though, so it depends on what you are powering with this motor. IE Can the piece of eguipment be ran faster?
Can a 415v 50hz motor run on 380v 50hz?
no
What size power cable is needed for 30KW 440V 3phase 50Hz induction motor?
Use this formula to find amperage when kW is shown. Amps = kW x 1000/1.73 x Volts x pf. Use a power factor of .85 for the formula. Once the current is calculated re-ask the question for cable size for the calculated current.
Which size of copper cable in mm should use for 90kW 440V 3phase 50Hz motor and can you know how is calculate?
cable size for the 90kW motor is 3CX150sqmm aluminum cable
What size cable and breaker would be required for a 3phase 6.2kw 50hz fan 11Amps with a 20metre cable run?
4sqmm
What is the amperage and kw of a 75hp 380v 3phase 50hz motor...same for 25hp and 1hp?
100
How can you operate a electric motor rated at 400V 3phase 50Hz on a 400V 3phase 60Hz system?
Yes, however, the RPM will increase by 20%, if the motor is connected to a shaft or driving something that can not handle the torque, then you might run to heating issues or performance issues.
How can you run a 440V 3 phase 60Hz motor on a 440V 50hz 3 phase supply?
How can you run a 380v 50hz motor with 440v 60hz source?
Yes. It will make your motor a little faster though, so it depends on what you are powering with this motor. IE Can the piece of eguipment be ran faster?
Can a 415v 50hz motor run on 380v 50hz?
no
What size power cable is needed for 30KW 440V 3phase 50Hz induction motor?
Use this formula to find amperage when kW is shown. Amps = kW x 1000/1.73 x Volts x pf. Use a power factor of .85 for the formula. Once the current is calculated re-ask the question for cable size for the calculated current.
Can a 400v motor run on a 440V supply?
Should work at nearly full power as long as the polarities of the 4 pin plug are in sync and it is a 3 phase 50Hz motor. Do a regular temperature check under full operating conditions for the first hour to ensure speed is enough for cooling.
How can you determine if an electric motor is 50HZ or 60HZ if there is no name plate?
One way would be to hook it up to a supply (by itself, with no load) and measure the speed with a contact tachometer. If your supply is 60Hz, and the motor speed corresponded to one of the standard motor speeds, it would be a pretty safe bet you had a 60Hz motor. If the speed was about 20% faster than a standard speed, the motor is probably a 50Hz motor. Or 20% slower if you were running a 60Hz motor on 50Hz For instance, a 1750 RPM 50Hz motor would spin at about 2100 RPM if you ran it on 60Hz.
What is impact ampere in 50Hz motor connected to 60Hz?
What effect will be there on the motor (Induction) output power when a 100kW 50hz motor is connected to a 60hz power supply.
What size of wire should i use with a 50hz motor?
Depends on the current rating which should be on the motor.
