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4hv.org :: Forums :: General Chatting
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Linas
Tue Feb 16 2010, 06:55PM
Linas Registered Member #1143 Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721
complicated way of making tea
1266346538 1143 FT6000 Img 9650
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Dalus
Tue Feb 16 2010, 08:48PM
Dalus Registered Member #639 Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
Guess it does work smile
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Renesis
Tue Feb 16 2010, 09:15PM
Renesis Registered Member #2028 Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319
Linas wrote ...

complicated way of making tea
1266346538 1143 FT6000 Img 9650


7,45A x 12V x 0,95 = 84,9W

0,2L x 4,18 x 90°C x 1000 = 1254Wmin
60

1254Wmin = 14,8min = 14 minutes and 48 seconds
84,9W

Not horribly quick tho shades
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Linas
Tue Feb 16 2010, 09:45PM
Linas Registered Member #1143 Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721
it's working when current is 20A and voltage is 24V, but 2,2Ah akku can't take long and BMS shut down akku.
but water was boiling :)
Link2
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Avalanche
Sun Feb 21 2010, 11:20AM
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
war of the currents


1266751215 103 FT6000 P5310057 Large

1266751215 103 FT6000 P5310062 Large

1266751215 103 FT6000 P5310063 Large

1266751215 103 FT6000 P5310064 Large
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klugesmith
Mon Feb 22 2010, 06:43AM
klugesmith Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Avalanche wrote ...
war of the currents
Beautiful pictures. Is the dynamo in a museum?

Less well known than the "war of the currents" is the more general "war of the systems". By 1895, polyphase AC was well ahead of single phase AC in orders for new generating plants and transmission lines.
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c4r0
Mon Feb 22 2010, 08:31PM
c4r0 Registered Member #151 Joined: Sun Feb 12 2006, 02:53PM
Location: Poland
Posts: 153
E.T. phone home smile

1266870636 151 FT6000 Imgp1568x
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Avalanche
Mon Feb 22 2010, 10:11PM
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
Klugesmith wrote ...

Avalanche wrote ...
war of the currents
Beautiful pictures. Is the dynamo in a museum?

Less well known than the "war of the currents" is the more general "war of the systems". By 1895, polyphase AC was well ahead of single phase AC in orders for new generating plants and transmission lines.


The dynamo is actually here Link2 The hall has a small industrial museum attached to it, and that dynamo is coupled to a steam engine IIRC. There was also some switchgear nearby, I'll have to have another look through my pics.

I never realised there was any non-polyphase AC generation, other than those small portable generators cheesey
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radiotech
Thu Feb 25 2010, 07:34PM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
This is a General Electric Cat#250229 oil test receptacle,

Transformer oil was placed in the cup to find the AC breakdown
voltage. One of the prongs slides in to adjust the gap spacing.

It was in our generation department and was used on the 66kV line.
1267126462 2463 FT6000 Oil Test Cup Gap
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Dr. Dark Current
Fri Feb 26 2010, 02:33PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

1267194128 152 FT6000 Tubes
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