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Plug terminals #219339
05/06/18 10:50 AM
05/06/18 10:50 AM
IMG_20180425_170408.jpg
Joined: Oct 2016
Posts: 9
China
T
Tjia1981 Offline OP
New Member
Plug terminals

This morning ,I got a three-phase plug with 6 wire terminals( see pictures), L1 , L2, L3, N/W, Earth, and a "pilot" terminal, I don't know what 's the "pilot" terminal use for , for testing or other purposes ?
5 Comments
Re: Plug terminals [Re: Tjia1981] #219361
05/21/18 05:40 AM
05/21/18 05:40 AM
G
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 189
UK
Typically to operate a contactor, controlling the supply.

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Re: Plug terminals [Re: Tjia1981] #219364
05/21/18 11:41 AM
05/21/18 11:41 AM
T
Tjia1981  Offline OP
New Member
Joined: Oct 2016
Posts: 9
China
Hi ,geoff, Thank you for your answer

This picture was taken in my workshop , and these three-phase plug mainly used for connecting equipment like water pump , electric welding machine to the AC 380V distribution box on the wall´╝îno control circuit inside the distribution box , and controlling the power supply only by RCD

Re: Plug terminals [Re: Tjia1981] #219374
05/23/18 01:24 PM
05/23/18 01:24 PM
G
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 189
UK
Well, just not used in your case, and probably has no connection, but that's what it was intended for if needed.

Re: Plug terminals [Re: Tjia1981] #219377
05/24/18 01:06 PM
05/24/18 01:06 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,985
Brick, NJ USA
Perhaps an indicator light, or a monitoring device?


John
Re: Plug terminals [Re: Tjia1981] #219459
11 hours ago
11 hours ago
A
andey  Offline
Member
Joined: Aug 2008
Posts: 47
germany
If it's a CEE Standard plug, the Pilot contact is for operating a Contactor, so the plug contacts don't wear off when connecting or disconnecting under load.
See here, chapter 4.1 https://en.wikipedia.org/wiki/IEC_60309


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