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Thread: 415v crankcase heaters
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29-11-2007, 08:06 PM #1
415v crankcase heaters
Hi. Does anybody know of where I can get 415v crankcase heater tapes from.They need to be 1000mm long and 70w. I've tried RPW,Climate center and Google with no luck.
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29-11-2007, 08:19 PM #2
Re: 415v crankcase heaters
I had this problem years ago,
In the end I ended up fitting a transformer and using a standard 240V heater.
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29-11-2007, 08:30 PM #3
Re: 415v crankcase heaters
Might end up having to do that. Thanks Viking
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30-11-2007, 12:24 AM #4
Re: 415v crankcase heaters
I have to ask - why the transformer ?
If the unit is three phase 415v why not tap off one phase to get the 230v?
Or am I missing some 'correct electrical procedure'?Brian - Newton Abbot, Devon, UK
Retired March 2015
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30-11-2007, 01:16 AM #5
Re: 415v crankcase heaters
Well, I assumed that as the question were asked, the unit in question lacks the Neutral (and it is really bad practice to connect it to earth)....
But I might be wrong, it have happened once in the past.
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30-11-2007, 09:43 AM #6
Re: 415v crankcase heaters
yes the unit does not have a neutral. its just 3ph + earth.
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30-11-2007, 11:21 AM #7
Re: 415v crankcase heaters
Viking is right it is not good practice to use the earth as the neutral, reason being the earth could be defective and if so you will liven up any metal part of the installation. Earth connections are either to a water pipe (old houses) or a metal stake in the ground.
A 415V transformed is the probably the best way of using a 240V heater.
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30-11-2007, 12:09 PM #8
Re: 415v crankcase heaters
Hi,
If you're looking for a belt type crankcase heater to go around a hermetic compressor, you could try this one:
Danfoss Maneurop has a 400V 75W crankcase heater for the MTZ-4cylinder compressors. The perimeter of this compressor is about 97 cm. The code for it is 7773014.
You could check with your local Danfoss Maneurop dealer (D&W ?)
Best regards
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30-11-2007, 04:38 PM #9
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30-11-2007, 06:44 PM #10
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30-11-2007, 09:08 PM #11
Re: 415v crankcase heaters
Who mentioned that the earth was going to be used as a neutral?
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30-11-2007, 09:09 PM #12
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30-11-2007, 10:26 PM #13
Re: 415v crankcase heaters
Ordered transformers today. Thanks for the replys
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30-11-2007, 11:12 PM #14
Re: 415v crankcase heaters
Jeeez, so many answers I can't get in to say - fair comment, no neutral so no 230v - quite correct.
I'll just sit in the corner until you've all stopped beating on meBrian - Newton Abbot, Devon, UK
Retired March 2015
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01-12-2007, 01:08 AM #15
Re: 415v crankcase heaters
Sorry Brian we will stop now.
Paul
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02-12-2007, 12:10 AM #16
Re: 415v crankcase heaters
Thanks, I'll take the hard hat off now
Brian - Newton Abbot, Devon, UK
Retired March 2015
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