Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Prevent racking a breaker

Status
Not open for further replies.
farale

farale

Electrical
Joined
Apr 7, 2018
Messages
36
Location
IR
Dear All,

I have seen the following sentence about available interlocks in ABB's Installation and maintenance instructions for UniSafe:

"Locking electromagnet on the apparatus truck to prevent racking-in/out without power."

It seems that UniSafe prevents a breaker's truck from racking, if there is no power!

Is it reasonable????
 
Sort by date Sort by votes
It prevents the breaker from being racked in if the umbilical cable is not connected. Yes, it is reasonable.
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

bdn2004
  • Question Question
Analyzing a 3-phase fault recorded waveform from an SEL relay on a 15kV feeder breaker, when did the breaker trip, why is VB at 0V before the fault ?
Replies
3
Views
10K
bdn2004
bdn2004
T
  • Question Question
new ATS and now one downstream Breaker tripping
Replies
5
Views
7K
thermionic1
thermionic1
simonfr
  • Locked
  • Question Question
LO/TO - remote circuit breaker
Replies
6
Views
5K
PersonalProfile
PersonalProfile
EEENGRX
  • Locked
  • Question Question
Tie feeder breaker connection
Replies
0
Views
1K
EEENGRX
EEENGRX
J
  • Locked
  • Question Question
Utilizing an SF6 circuit breaker as a normally open point
Replies
14
Views
7K
stevenal
stevenal

Part and Inventory Search

Sponsor

Back
Top