three phase contactor
three phase contactor
(OP)
can somebody tell wheather a 30 A contactor can withstand 130A for few miliseconds?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: three phase contactor
When you say "for a few milliseconds", I get a feeling that it is about switching capacitors. There, the peak current can get very high and kills contactors. How do you know that the peak is 130 A?
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: three phase contactor
If it is a capacitor switching application, you should get the capacitor switching duty rating from the contactor manufacturer. You cannot assume anything about a contactor's ability to switch capacitors without testing, because with capacitors, there is more damage from OPENING the contacts than from closing them.
You could also tell us more about what you have and what you want to do so we can avoid a game of "20 questions".
"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: three phase contactor
RE: three phase contactor
Alternating current:
Direct current:
RE: three phase contactor
RE: three phase contactor
"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: three phase contactor