Description
2.9 Self-monitoring and diagnostics
3WA1 air circuit breaker
180 Equipment Manual, 02/2023, 92310000002-06
Test requirements
To run a software-assisted test, the following requirements must be met:
• 3WA air circuit breaker with ETU600 electronic trip unit and a firmware version from
V2.2, see Firmware updates
(https://support.industry.siemens.com/cs/ww/en/view/109782123
)
• SENTRON powerconfig configuration software from V3.22, see current version of
powerconfig (https://sie.ag/2SUlAc2
)
• Automation License Manager (ALM), see Automation License Manager
(https://support.industry.siemens.com/cs/ww/en/view/114358
)
• Software license for software-assisted testing (different test scope, depending on the
type of license
(
https://mall.industry.siemens.com/mall/ww/en/Catalog/Product/?mlfb=7KN2720-
0CE00-1YC1))
• USB-C cable
• Windows PC/Laptop
• Active USB-C connection to the ETU600 electronic trip unit
• All trip alarms are reset
• The main contacts are closed
Make sure that no current flows
through the main contacts. If a current flow is
detected, the test cannot be started.
• Recommendation: Use of an external 24 V DC power supply for the BSS200 Breaker
Status Sensor
The test can be performed with the circuit breaker installed.
The circuit breaker does not have to be disconnected from the primary voltage supply
before performing the test.
During the software-assisted test, the protective function is still active and can open the
circuit breaker, for example, in the event of a sudden overcurrent.
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