RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE
KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE
PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE
MORE THAN 11KV ???????????????//
Answer Posted / nageshwar
FOR A 11KV LINE LINE TO GROUND VOLTAGE IS 11KV/SQRT(3). IT
GIVES OF THE ORDER OF 6KV ONLY. AS ARRESTER IS USED FOR
LINE TO GROUND TO DISCHARGE THE FAULT CURRENT TO GROUND ITS
RATING SHOULD BE MORE THAN 6KV. GENERALLY WE USE 9KV.
Is This Answer Correct ? | 32 Yes | 16 No |
Post New Answer View All Answers
which protection function should measure RMS value of current&DFT value of current?
What information we need to prepare relay coordination chart
how to calculate current and voltage in a same circuit?
what is a bus post insulator? explain its application in a substation.
Pleae send me last 5 years of Question book about RRB chennai.
write a c++ code that receives an integer number and display the sum of the number and its revers integer?
A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?
What is the bundle conductor?
Is there any standard guidelines/Criteria to design NGR/NGT.?
what is mean by dry frequency
WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?
how we explain parallel paths armature winding?
how ups works ? various parts of ups and working principle
What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)
what is thermal resistance of PVC Cable.