OMICRON 267
In-service diagnostic methods
18 In-service diagnostic methods
This section describes in-service testing of circuit breakers with CIBANO 500 and its accessories.
Primary Test Manager in combination with CIBANO 500 supports the following in-service tests:
• Timing (VTM)
• First Trip
18.1 Timing (VTM) test
Note: To perform the Timing (VTM) test (VTM stands for Voltage-based Timing Measurement), you
need a license. Without the license, it is not possible to start the measurement and Primary Test
Manager displays a missing license message. To get the license, contact your regional OMICRON
service center.
Connection
To connect the test object to CIBANO 500:
1. In Primary Test Manager, open the Timing (VTM) test.
2. In the Hardware configuration area, set the hardware configuration.
Note: Do not connect the trigger channel (Trigger IN) and the current clamps to the same neutral
connection socket of the group A or group B.
Figure 18-1: Hardware configuration of the Timing (VTM) test
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