Problem running 220volt motor on local electricity supply

[hajialeem]

The local electric supply in our country is 415 volts. Our company recently imported plant and machinery. All the motors and electric panels that have been imported are on 220/110 volts specifications. The total load of the motors is 110 Kw.

The motors are now tripping as soon as they are started. Can someone please provide a solution!

 

[berkeman]

The local electric supply in our country is 415 volts. Our company recently imported plant and machinery. All the motors and electric panels that have been imported are on 220/110 volts specifications. The total load of the motors is 110 Kw.

The motors are now tripping as soon as they are started. Can someone please provide a solution!

Welcome to the PF.

Why was the incorrect equipment purchased? Can it be exchanged for the proper equipment?

 

[hajialeem]

Welcome to the PF.

Why was the incorrect equipment purchased? Can it be exchanged for the proper equipment?

An oversight from the supplier. It can be changed but shipping times are long, approx. 25 days and the company is not ready to delay the project that long

 

[uart]

Can you clarify exactly what you've got there hajialeem: Are you saying that the rated phase voltages on your machines are 220V and you want to run them on 240. I'm assuming you currently have the 220 volt windings star connected making them a nominal rating of 220*sqrt(3) = 380 volts, whereas you're actually running them from 415 volts is that correct.

BTW. Are you using 50Hz or 60Hz?

 

[david90]

How did you hook up the 220VAC motor to 415VAC system? Do you have a transformer to step down 415VAC to 220VAC? What brand of inverter are you using and what is the trip alarm?

 

[I like Serena]

Hi hajialeem!

220/110 V electrical equipment is kind of an international standard.

Can you get your hands on an adapter that transforms whatever voltage you have (that's not entirely clear from your statement) to the standard 220 or 110 V?

 

[russ_watters]

Yeah, I'd be surprised if the facility didn't have 220 or 240V. What country is it?

 

[hajialeem]

Can you clarify exactly what you've got there hajialeem: Are you saying that the rated phase voltages on your machines are 220V and you want to run them on 240. I'm assuming you currently have the 220 volt windings star connected making them a nominal rating of 220*sqrt(3) = 380 volts, whereas you're actually running them from 415 volts is that correct.

BTW. Are you using 50Hz or 60Hz?

The rated voltages on the motors are 220volt (three phase). We want to run them on the local supply (415volts - three phase). The motors are 50Hz.
Is there a way to run the motors without the need of a step down transformer?

 

[berkeman]

The rated voltages on the motors are 220volt (three phase). We want to run them on the local supply (415volts - three phase). The motors are 50Hz.
Is there a way to run the motors without the need of a step down transformer?

No, sorry. There is no hacking way to fix this error.