
TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01
A-3
Monday
, November 26, 2001 1:09 pm
Figure A.2 Air-Magnetic Breaker Operation
Splitter Plates
Arc Runners
Load Terminal
Line Terminal
De-energized
Breaker in closed position.
Arc Chute
1.
Main Contacts separate,
2.
Arcing contacts separate
3.
Arc transfers to runners. This inserts
Main Contacts
Arcing Contacts
Components shown in black
are energized.
arcing contacts still closed
and the arc strikes.
current into the blowout coil (not shown)
The circuit develops magnetic forces.
which help force the arc rapidly into
the chute.
Содержание TDR9000
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