TDR9000
™
Circuit Breaker Test System User’s Guide
72A-1898 Rev. A 11/01 4-85
Monday, November 26, 2001 1:09 pm
Contact Timing
Values
In graphical mode, the following values appear for a Main Contact
channel in a column on the right side of the Data window:
O Indicates the contact was open at the time
selected.
C Indicates the contact was closed at the time
selected.
R Indicates the contact was in Resistor state at the
time selected.
O-R-C Indicates the contact was in a state of change at the
time shown, and the selected sample time
contained instances of the circuit breaker in the
Open, Resistor, and Closed states.
R-C Indicates the contact was in a state of change at the
time shown, and the selected sample time
contained instances of the circuit breaker in the
Resistor and Closed states.
O-R Indicates the contact was in a state of change at the
time indicated, and the selected sample time
contained instances of the circuit breaker in the
Open and Resistor states
N
OTE
The compound states described for R and O-R-C may be the result of
contact bounce during circuit breaker operation.
Trip and Close
Current Values
All trip and close current values appear as positive.
Auxiliary Contact
and Analog
Values
The following auxiliary and analog contact values appear:
C Indicates the contact was closed at the time
selected.
OD Indicates the contact was open dry at the time
selected.
OW Indicates the contact was open wet at the time
selected.
All Current and Voltage values are positive.
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