ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
75 kva tranformer
by sparkync. 09/23/17 06:41 PM
Another generator question
by gfretwell. 09/23/17 04:15 PM
What do you do?
by gfretwell. 09/22/17 10:37 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,901 Are you busy
176,665 Re: Forum
168,560 Need opinion
Who's Online Now
0 registered members (), 36 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#211445 - 10/13/13 08:58 PM 3 phase voltage monitor with 2 levels of alerts?  
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
For a new project, I am looking for a 3 phase L-N voltage monitor relay that has two levels of outputs. First level will be used for a warning alert, the second level will initiate system shutdown.

One approach is using two monitoring relays and use different settings, but I would prefer a single unit if available. Power will be 400/230 V, 50 and 60 Hz.

Thanks.


Work Gear for Electricians and the Trades

#211446 - 10/13/13 10:05 PM Re: 3 phase voltage monitor with 2 levels of alerts? [Re: LarryC]  
JoeTestingEngr  Offline
Member
Joined: Nov 2005
Posts: 790
Chicago, Il.
What about using the 3 phase PLM on the high side and a single phase adjustable relay on your ctl ladder? I haven't seen any that have 2 steps of O/P
Joe



Member Spotlight
Radar
Radar
Los Angeles, CA
Posts: 349
Joined: April 2004
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 15 (0.003s) Memory: 0.7429 MB (Peak: 0.8599 MB) Zlib enabled. Server Time: 2017-09-24 05:07:09 UTC