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#123023 - 02/19/06 08:30 PM Puhoi Drill No.2
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
Yet more pics from RODALCO:

End termination pole. 11 kV cockroach, from Waiwera, rural line mostly 25 or 35 mm² Copper:



RMU(Ring Main Unit), for 600 kVA dry transformer for mining auxillaries:



SDAF 11 kV cables, 2 days before livening. Backfilled with sand on the day of "switch on":



11 kV incoming supply to RMU in local tunnel sub:



SDAF bank:

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Tools for Electricians:
#123024 - 02/19/06 08:39 PM Re: Puhoi Drill No.2
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
And more:

LV side 250/433 Volts transformer, 600 kVA for auxillary supplies:



RMU data, Merlin Gerin Ringmaster:



LV side 240/415 Volts transformer, 750 kVA for local supplies:



RMU and behind 1000 kVA drill tranformer (dry type) 3Ø 1050 Volts:



Name-plate details 600 kVA transformer:

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Let's face it, these days if you're not young, you're old - Red Green grin

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#123025 - 02/20/06 06:52 AM Re: Puhoi Drill No.2
Dave T Offline
Member

Registered: 01/22/05
Posts: 157
Loc: Waukesha, WI, USA
I like the puffer breakers that are used.

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#123026 - 02/21/06 10:41 PM Re: Puhoi Drill No.2
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
By the way Ray,
What does SDAF stand for?.
I've never heard the term before.
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Let's face it, these days if you're not young, you're old - Red Green grin

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#123027 - 02/28/06 07:15 AM Re: Puhoi Drill No.2
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
By the way Ray, regarding the top pic.
Are you guys too cheap (or slack?) to put some DDO's on the pole where the wire heads underground?.
As you know yourself, DDO's aren't just fuses!.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

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#123028 - 02/28/06 11:24 AM Re: Puhoi Drill No.2
RODALCO Offline
Member

Registered: 12/08/05
Posts: 863
Loc: Titirangi, Akld, New Zealand
There are fuses in the ring main units, I'm not sure if you use these down south but these ABB units are extensively used in the greater Auckland area.

The first switch of the bank is the isolator.
Second cubilcle is the metering CT's and VT's.
third is switch fuse with 50 Amp fuses.
fourth is switch fuse with 80 Amp fuses.
fifth is switch fuse with 125 Amp fuses.

I haven't seen 200 Amp ddo's and the end of this line is probably unable to supply that load anyway.



[This message has been edited by RODALCO (edited 02-28-2006).]
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