Server racks earth leakage

[nick1986]

Hi

Being totaly honest I don't know much about IT server racks I know it's should be bonded to the main earth terminal in 6mm cable I fitted a 32A rcbo to comply with 17th edition and it trips when I start powering up the rack one device at atime then it trips, I know that IT equipment has alot of earth leakage what sort of filter do I need to fit and where would I buy one any ideas thanks for your time to help me.

 

[Steve3948]

RCD+Servers = Asking for trouble :Salute

 

[nick1986]

Because the company who first installed it put it on the main house ring with a bank of sockets and if it has socket outlets it needs to have a rcbo or rcd to comply with 17edition and the sockets on the upstairs ring and they are unskilled person and all that the problem is I would of done a dedicated feed by a commando socket but I carnt rip up the floors and wall in a stately home. Any ideas lads to get by this thanks so much

 

[batty]

By pass the RCBO.

 

[Steve3948]

Nick, you say IT Server Racks in a domestic property, for private use, most large domestic's would have a Patch Panel and maybe 1 or 2 Servers if any.

How big is this set-up.

 

[Badger]

Erm y not just label the sockets up for it equip use only and leave on mcb or recable to c/u and put a desicated circuit in like ours is setup at home

 

[Sidewinder]

I'll second the above, and would ask what was there before you fitted the rcbo?

What did you go there to do?

Why did you change the protective device?

Is it tripping on earth leakage or inrush current?

Have you measured the leakage / inrush?

Please answer the questions, then we can advise further.

Oh, and a filter will probably increase the leakage!

You "may" need to move the servers to a UPS.

 

[OnOff]

I know the OP said RCBO but just taking the RCD bit as the issue..............Filters and RCD's ...........I can only comment from experience with inverters and RCDs. Had MAJOR problems about 10 years ago with SEW Eurodrive VSD's tripping 30mA RCDs. Seems filters are a bit notorious for tripping them - something to do with the RC networks within them? SEW themselves said to either fit 100mA RCDs OR drives WITHOUT filters. Trouble then is that I WANTED 30mA protection and filtering is required I think - something to do with CE marking. Bottom line is we ended up fitting Merlin Gerin Si type RCDs. Not time delay but something a bit clever and they work an absolute treat. No more tripping! Here's the bumpf on them:

http://www.engineering.schneider-electric.dk/Attachments/ed/cat/catalog_protection_against_nuisance_tripping_voltage_surge.pdf