2014年8月21日星期四

Methods for searching the artificial


If not installed within substation grounding line selection device,also is not installed on line
grounding fault indicator or short circuit in one fault indicator,also does not have good grounding fault detector,it had to adopt artificial find stupid way.To find the steps as follows:(1) by hand (or scheduling,same below) switch,in order to know which article for grounding transformer
substation,by www.facebook.com/guohong.trading scheduling which to know.2 there are two ways to find the next point of failure: one is cascade line segments,or will often have a fault line,with 2.5 kV shaking table test grounding relatively insulation,insulation resistance small during the fault period,reduce search range (of course,in the transformer substation outlet side must be hanging safety protection measures such as grounding line);The second is the line segment as far as possible,and then try step by step and sending,and scheduling stator winding machine
interactive coordination,with zero sequence voltage alarm when the segment for fault section.Methods for searching the artificial operation very troublesome,if the line length,branch number,switch section,that is not good operation,coupled with the sky and the weather,that would be much bad treatment.Suggest or some less investment in equipment technology is used to cooperate with artificial search,can get ac alternators 220vtwice the result with half the effort,both provides the power supply reliability and the social efficiency,also created economic benefits.

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