
Circuit Switchers and High-Current Generator Breakers with Isolating Contacts
A-24
72A-1898 Rev. A 11/01
Monday
, November 26, 2001 1:09 pm
Due to the physical geometry of a multiple module Live Tank Circuit
Breaker, there is a stray capacitance-to-ground present in each Circuit
Breaker head. Additional capacitance is added by the measurement
cables attached to the circuit breaker. Figure A.25 shows C
1
, C
2
, C
3
as
the total capacitances-to-ground present during the measurement. These
typically are 4000 to 8000 pF.
Figure A.25 Capacitance-to-Ground for a Circuit Breaker
To
programmable
digital
discriminator
To
programmable
digital
discriminator
Contact #1
Contact #2
Frame of the
Instrument
Common
Содержание TDR9000
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Страница 50: ...Step 5 Saving Test Results 1 24 72A 1898 Rev A 11 01 Monday November 26 2001 1 09 pm...
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