OMICRON 195
Off-service diagnostic methods
Contact system Contact system of the circuit breaker under test
Select PIR to measure timing of contacts with pre-insertion resistors.
Select Graphite nozzle to measure timing of contacts with graphite nozzle.
Nozzle length Length of the circuit breaker’s graphite nozzle
Trip velocity/
Close velocity
5
Contact travel velocity during the O sequence/C sequence
Travel data
6
CB TN3 channel associated with the measured phase
The Travel data boxes display a list of CB TN3 travel measurement
channels set to the corresponding phase in the hardware configuration of
the CB TN3 module.
Test current per
channel
7
Output current of each CB MC2 current channel
Other
Grounding Select the grounding condition of the circuit breaker under test.
Current clamp settings
8
Channel Group B I/O socket
Ratio Current clamp ratio
I max Maximum current of the selected probe range
Sequence
Test sequence Test sequence to be performed
Trigger setting
9
Threshold Threshold value of the trigger signal
The measurement starts if the trigger signal rises above (rising edge) or falls
below (falling edge) the threshold.
Edge type Rising or falling edge
1. Only available if the trip and/or close signals are configured on the IOB1 module.
2. Only available in the guided test workflow and if CIBANO 500 is selected as source
3. Data taken from the nameplate
4. Only available if Control board is selected as supply source.
5. These values are used for calculating the timing characteristics of contacts with graphite nozzle.
6. Only available if at least one CB TN3 module is connected to CIBANO 500. The corresponding travel data is used to calculate
the timing characteristics of contacts with graphite nozzle.
7. Not available for PIR contact system. We recommend using a test current of 100 A per CB MC2 channel for the most accurate
results.
8. Only available if a current clamp is configured. The channel value displayed refers to the group B of the I/O sockets on the
CIBANO 500 side panel. The B1…B4 sockets can be configured as Iclamp1…Iclamp4 respectively.
9. Only available if VIN, or one output in group A or group B is set to Trigger IN.
Table 17-49: Settings of the Dynamic Contact Resistance test (continued)
Setting Description
To Next Page
Loading...
