what is the difference between earthed and unearthed cable?

Answer Posted / vishnu k vyas

in Ungrounded system if L-G fault Occurs then voltage
acroos healthy Phase Becomes equal to Line Volatge
(1.732xVph).so per phase insulation requirment will be more
in un grounded Cables.

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how ct burden,magnetising current,ratio and knee point voltage are related & derived

1765


what is reactive power?, why its measured in VA ? is it transient behavior of system?

1799


Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com

1683


please send me the L&T Emb. sys. placement papers and entire details of pattren

1849


What are the conditions to be satisfied for parallel operation of dc generators?

625






what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

1661


what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

1771


How to size Air Circuit breaker (ACB)? What is the most important factors?

1798


What are hrc fuses and where it is used?

739


Explain different types of d.c motors? Give their applications

655


What is the main cause of magnetism?

1593


What is the relation between frequency and motor rpm?

1337


difference between a diode and thyristor?

1777


what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

1615


Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

1709