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#180317 - 08/21/08 03:05 PM Ground detector needed
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
In order to comply with 250.21(B), I need a ground detector. All I've found so far is one made by Cutler Hammer (way too expensive at about $2000) and a detector that uses lights (haven't priced it yet). I'd really like to have something with a set of relay contacts that I could hook to a bell or horn in order to get some attention when the first ground fault occurs.

System voltage will be 480 volts.

Anyone know of a product that will help me?
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#180336 - 08/22/08 06:27 AM Re: Ground detector needed [Re: Tom]
JBD Offline
Member

Registered: 07/12/01
Posts: 599
Loc: WI, USA
I have used some from Erickson Electrical Equipment,
http://ericksonelectric.thomasnet.com/category/ground-detectors?

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#180342 - 08/22/08 08:54 AM Re: Ground detector needed [Re: JBD]
JValdes Offline
Member

Registered: 06/03/07
Posts: 308
Loc: South Carolina
Would not a megger be a suitable substitution?

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#180345 - 08/22/08 01:00 PM Re: Ground detector needed [Re: JValdes]
junkcollector Offline
Member

Registered: 04/15/07
Posts: 35
Loc: Central MN
 Originally Posted By: JValdes
Would not a megger be a suitable substitution?


He wants a permanent ground detector that is built in. They are normally used and required on ungrounded systems to tell if a leg is accidentally shorted to ground.

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#180355 - 08/23/08 05:29 AM Re: Ground detector needed [Re: junkcollector]
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
JBD,

Thanks for the lead on the Erickson equipment, I'll have my supplier price one next week.

Tom
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