
Test Plan Items
A-66
72A-1898 Rev. A 11/01
Monday
, November 26, 2001 1:09 pm
Capacitance
Channel Parameters
The TDR9000 can measure the capacitance of grading capacitors that
are connected across the main contact of a circuit breaker in the range of
75 to 10,000 pF.
The test measures capacitance between each of the two EHV leads and
the common lead for each phase and each module. The test result is
presented as a pass/fail rating based on whether each measurement is
within the Test Plan limits.
Figure A.78 shows the parameters available for the Capacitance
channels.
Figure A.78 Capacitance Channel Activation
Parameters include:
Phase
This activates/deactivates on a phase-by-phase and
module-by-module basis.
Cap. Range
A scrollable picklist for selecting the Capacitor
configuration. Choices include:
• 75 - 2,5000 pF
• 300 - 10,000 pF
Capacitance Min.
A user-entered field for entering the minimum
expected capacitance.
Capacitance Max.
A user-entered field for entering the maximum
expected capacitance.
Содержание TDR9000
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