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TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01 A-93
Monday
, November 26, 2001 1:09 pm
Time – Time The Circuit Breaker Average Velocity is calculated
between the two times specified (Figure A.111). In
Figure A.111, the end time (
T0 ) must be greater
than the start time ( FROM ).
Figure A.111 Contact Closed Time – Time
Time – Contact Close
The Circuit Breaker Average Velocity is calculated
for the period between the moment when the Main
Contacts make and the time specified before the
make (Figure A.112).
For the Oil Circuit Breaker, if only one transducer
is used, the Instrument uses the Main Contact data
for the phase of the active motion channel.
Figure A.112 Contact Closed Time – Contact Close Circuit Breaker
Starting Open Position
(start of test)
From Time
Final Closed Position
(end of test)
To Time
Zone 1
Contact #1
Contact #2
Contact #3
Phase where the motion
channel is activated
and the Transducer is
installed.
Final Closed Position
(end of test)
Starting Open Position
From
Time
To Contact Close
Zone 1
Time (ms)
10 20 40 60 80 100
(start of test)