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#123023 - 02/20/06 12:30 AM Puhoi Drill No.2  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Yet more pics from RODALCO:

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

[Linked Image]

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

[Linked Image]

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

[Linked Image]

11 kV incoming supply to RMU in local tunnel sub:

[Linked Image]

SDAF bank:

[Linked Image]


Tools for Electricians:

#123024 - 02/20/06 12:39 AM Re: Puhoi Drill No.2  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
And more:

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

[Linked Image]

RMU data, Merlin Gerin Ringmaster:

[Linked Image]

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

[Linked Image]

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

[Linked Image]

Name-plate details 600 kVA transformer:

[Linked Image]


#123025 - 02/20/06 10:52 AM Re: Puhoi Drill No.2  
Dave T  Offline
Member
Joined: Jan 2005
Posts: 155
Waukesha, WI, USA
I like the puffer breakers that are used.


#123026 - 02/22/06 02:41 AM Re: Puhoi Drill No.2  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
SI,New Zealand
By the way Ray,
What does SDAF stand for?.
I've never heard the term before. [Linked Image]


#123027 - 02/28/06 11:15 AM Re: Puhoi Drill No.2  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,223
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!. [Linked Image]


#123028 - 02/28/06 03:24 PM Re: Puhoi Drill No.2  
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 854
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.

[Linked Image]

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


The product of rotation, excitation and flux produces electricty.


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