Advice Needed - CNC Machine Tripping

[Squid]

I'm no expert on motors but surely the 300Hz motor isn't designed for direct connectionn to 50Hz supply?

Just wonder if its been derated at some stage, I may also be talking ball cocks.

 

[westward10]

If he is plugging this to a 13A socket I can only assume the machine has a phase / frequency converter fitted which is an expensive bit of kit. This may also offer variable speed drive of the motor by changing the frequency. I wouldn't mind seeing the inside of the control enclosure. According the motor plate it is only a year old and maybe he should refer to the manufacturer with regards to the rcd tripping.

 

[Squid]

If he is plugging this to a 13A socket I can only assume the machine has a phase / frequency converter fitted which is an expensive bit of kit. This may also offer variable speed drive of the motor by changing the frequency. I wouldn't mind seeing the inside of the control enclosure. According the motor plate it is only a year old and maybe he should refer to the manufacturer with regards to the rcd tripping.

The thing is when its plugged in to a standard socket elsewhere (the one with the dodgy CSU) it works fine, I am trying to get some more info as we speak.

 

[mhar]

The thing is when its plugged in to a standard socket elsewhere (the one with the dodgy CSU) it works fine, I am trying to get some more info as we speak.

On the second board is the mcb for the circuit he is plugging in to defititely rcd protected?

 

[Squid]

On the second board is the mcb for the circuit he is plugging in to defititely rcd protected?

Not sure but looking at the bodges I doubt it.

 

[Darkwood]

I would suggest the 3phase motor is powered by a 1ph to 3ph VSD, the drive output been 300hz to generate the high speed tabulated on the motor. The motor seems to be designed for this going by the plate, as for the tripping, well the drive will probably be sending designed earth leakage in excess of the RCCB rating or taking it passed its limit if existing earth leakage exists from other circuits, was the other installation it was plugged into RCD covered?

 

[Deleted member 9648]

deleted double post

 

[Deleted member 9648]

Anyways,

My architect based down in Limehouse renting work space in a building bought himself a CNC machine and off course when he powers it up it trips the RCCB so I am looking to get some advice from the knowledgeable sparks on here so that I can pass the advice on to save him being ripped off.

Below I have pasted in a photo of his board as well as the label off the motor on the CNC machine (its not 3 phase BTW) he also tested the machine out in one oh hie "neighbours" work spaces and it works fine and nothing trips but as you will see from the photo the install is criminal and I have never seen a bodge like it.

Any help appreciated.

The implication being that if he calls someone the inevitable outcome is he'll be ripped off?
Sorry but I find that implication quite offensive on a public forum.
What is Joe Public viewing this post and considering getting an electrician in going to make of that?

 

[westward10]

Don't think there was any malice in it.

 

[Deleted member 9648]

Probably isn't, but the public seeing posts from the trade implying a rip off would be a likely outcome is hardly diplomatic.
I'd like to see that comment removed.