Looking for an economical 4kV fused disconnect switch for a 45kVA XFMR

[majesus]

We have a water pumphouse that is approximately 1.5km from camp. The load is about 30kVA, 3phase, 3 wire system (60Hz). We are exploring options and are thinking about stepping up from 600V to 4kV, running a #4 AWG conductor for the distance and then stepping down at the pumphouse with a 4kV/600V, 45kVA dry type XFMR. We would like to place a fused disconnect switch on the step-down XFMR. Can anyone suggest a cost effective equipment that would meet this requirement?

Thanks,
Majesus

 

[jraef]

Depends on your definition of "cost effective". It's ineffective to do it wrong, doing it right is not going to be low cost. 5kV gear must be designed to handle 5kV safely, that means big distances compared to 600V class equipment and that adds size and cost. There is no way around that.

The lowest cost in my opinion will be a metal enclosed Fused Load Interrupter Switch (FLIS), and you might be able to find someone to put together a station service power package where they build the transformer into the same box, maybe even the panel board too. If you are in the US, probably around $4-5k.

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[waross]

Use pole top cutouts. Buy a "Hot Stick".


Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[majesus]

Thanks for the input
After getting pricing, a 45kVA pole mounted XFMR and some cut-outs was the feasible option.