ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
600 KW 120/208 3 Phase Y protection
by SteveFehr. 07/23/17 09:46 AM
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,259 Are you busy
174,680 Re: Forum
167,086 Need opinion
Who's Online Now
0 registered members (), 66 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#20957 - 01/24/03 09:52 PM HyPotting  
Gwz  Offline
Member
Joined: Apr 2002
Posts: 197
What are some of the typical HyPot voltages and time for 1/C 5KV and 15KV cables with shielding ?

Is their a 'Rule of Thumb '?


Work Gear for Electricians and the Trades

#20958 - 01/24/03 11:52 PM Re: HyPotting  
gramps  Offline
Member
Joined: Aug 2002
Posts: 112
ohio
2 times the rated voltage times 75% for 1 minute....record the reading....take another reading for 10 minutes...record that reading.

divide the first reading into the second reading....EASA recommends the answer should be 2.0 or higher.....but, 1.5 is prolly o.k.


#20959 - 01/25/03 02:45 AM Re: HyPotting  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
There are different levels for new versus maintenance testing, and 100% or 133% insulation.

One chart is http://www.kerite.com/catalog/catalogfiles/DC_field_testing_power.htm

Be Careful. You’re charging up fairly big capacitor(s) in the process. The test-set instruction manual is a good reference.




[This message has been edited by Bjarney (edited 01-25-2003).]



Member Spotlight
Admin
Admin
NY, USA
Posts: 3,447
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7509 MB (Peak: 0.8759 MB) Zlib enabled. Server Time: 2017-07-23 22:49:16 UTC