ABB eVM1 Installation And Service Instructions Manual page 43

Product serial Numbers: opens the product Configuration window, in production it enables you to
enter (Write) serial numbers of the CB, the Rogowski sensors and the IED. That information is
stored in a non-volatile memory on the IED and is not modified by new configuration or firmware
download. Read retrieves data from the IED for compatibility check and information to ABB service.
Available when an active communication link has been established with the IED.
CB Closing Counter: opens a window that shows the number of closing operations performed by
the CB and the percentage of contact wear due to load or short-circuit opening operations (0%
means new circuit-breaker). Both values can be modified and saved to the IED when in service
mode.
Fig. 25
The percentage of contact wear is calculated according to the following graphs showing the number
of closing-opening cycles (No.) allowed according to the breaking capacity (Ia).
N.
Fig. 26 (12b)
N.
Fig. 27 (12c)
Caption
No.Number of closing-
opening cycles allowed
for the vacuum inter-
rupters.
Ia Breaking capacity of
the vacuum interrupt-
ers.
41