The Craftmans Shop > New from Old
Puma / Dorman 6LE / MacFarlane B46B / 110 kVA Generator Resurrection
awemawson:
Yes there's a version of that type of switch on ebay that caught my eye - but when these things are exposed on vehicles or plant I'm not at all keen on flying leads - once ripped off that's it!
It'll be interesting to see how the surface mount switch survives vibration fixed to the engine - not that there is much, it runs pretty smoothly. Dead easy to change though now, just two M3 screws and no need to drain down :thumbup:
We had almost the exact same devices bolted to the side of the combustion chambers for the gas tumble driers in my launderettes and had remarkably little trouble with them
hermetic:
LIKE!
awemawson:
Thanks Phil :thumbup:
I spent today wiring up the relay box and documenting it. Far easier to do this on the bench than mounted on the machine down close to the floor, especially with my varifocals!
It's a useful sub assembly that pre-determines various conduit runs, and as at long last I've found a source for metal conduit clips that are wide enough to drill out to mount on existing engine bolts (ordered but not arrived) I can soon get on with the wiring proper.
(I've printed and laminated a copy of the picture below to go in the box lid to avoid future head scratching)
I mounted the mains cabinet tubular heater today, mainly to get it off the bench and out of the way !
Meanwhile I'm giving consideration to how to get power OUT of this box of tricks. Simple I'd thought, just mount a 125 Amp 3 phase, neutral and earth 'Commando' socket on a panel by the terminal block. But it's not actually that simple, as then you can't close the door :bang:
Alternatives are to :
A/ mount a socket on the side of the main cabinet, but then it will be vulnerable being the widest part of the machine or
B/ Cut a hole in the door that exposes a suitably mounted socket that slightly protrudes when the door is closed or
C/ mount a socket on the door itself on flexible leads
Option A I think is bound to cause tears in the future as the machine is moved about. Option C is neatest but at this sort of power level leads are not that flexible !
So at the moment I'm thinking option B but would very much welcome comments from anyone reading this.
John Rudd:
I cant really add any ideas for power connections, 125Amps for a TPN socket is a bit wieldy....
As this is supposed to power the furnace, why not hard wire the two....?
BUT, You should consider some protection relays for the genset.....Undervolts, overcurrent...etc..
Our 3.6 MW turbine sets were used in island mode ( there were two originally....) one duty one standby, and auto start....but one day someone decided to start a compressor ( a refrigeration system..) that was driven by a 6.6kv motor rated at 2.1MW.....suffice to say, the load imposed on the genset caused the shearing of the pins on the shaft coupling as the motor tried to start....
awemawson:
John, under / over volt monitoring is no problem as the Deep Sea control has that built in and is just a case of setting the right parameter.
I'm not absolutely certain but I think that the output breaker by Merlin Gerin is set to trip at 150 amps. I need to investigate further.
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