I'm looking for clarification on a few parts of the Dell UPS hard wire installation requirements. We have a Dell 3750W UPS (UK) and looking at the userguide it requires the following:
250V/30A, 2-pole circuit breaker (25A for 3750W/230V UPS models) to provide short circuit and overcurrent protection.
The protection device requires a two-pole disconnection device between the UPS output and the load.
The breaker must be wall-mounted and be readily accessible to the operator.
For Europe, the breaker must meet the IEC/EN 60934 standard and have a contact air gap of at.
We have an electrician who will be installing the device, but i would like to know (just in case he needs assistance) what the above requirements are. From our main circuit in our warehouse we have an armoured cable which feeds into a fuse box in our data centre where the UPS will be installed – I take it that his is ok to run off this fuse box into the UPS device?
Is the 2-pole circuit breaker similar to an RCD in the fuse box? What is the protection device – is this just an emergency trip switch located on a wall in the server room to disconnect the UPS power?
Really hope someone can give me a few pointers.