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amit_er1981
Active Contributor

Join Date: May 2009
Posts: 21

transformer of korea

09/11/2009 8:49 AM

in our company we buy a project of korea (CP).in pcc panel i saw one transformer i saw in there rating is 440 V/220V.in this transformer ony two phase is used (no neutral) and there is shock pruff in secondary side ..whyyy
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: transformer of korea

09/11/2009 11:30 AM

<...shock pruff...>

What is this? Is it correctly spelled?

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Anonymous Poster
#2

Re: transformer of korea

09/14/2009 12:42 AM

When the transformer is step down from 440V to 220V, there will be no neutral provided for step down transformer. Both of the secondary lead is call L1 and L2. If you want to have a neutral line for the secondary of the transformer, just ground the L2 to ground and you will have Live line and neutral line. Unless you specific that you want to have a neutral line.
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