Accessories
4.8 Residual current devices
3VA molded case circuit breakers with IEC certificate
450
Manual, 03/2019, A5E03603177010-03
Tripping
The molded case circuit breaker is tripped by means of a direct-acting tappet which engages
in the breaker mechanism from the residual current device.
Periodic self-test
In addition to manually checking the proper functioning of the residual current device by
pressing the test button, cyclic self-tests are performed inside the residual current device.
Checks are performed periodically, for example, to ensure that:
●
the microcontroller is functioning properly
●
the physical connection between the printed-circuit board and the maglatch is interrupted
●
the current transformers and the detection electronics are functioning properly
Содержание SENTRON 3VA1
Страница 1: ......
Страница 2: ......
Страница 662: ...Conversion tables 3VA molded case circuit breakers with IEC certificate 660 Manual 03 2019 A5E03603177010 03 ...
Страница 668: ...Glossary 3VA molded case circuit breakers with IEC certificate 666 Manual 03 2019 A5E03603177010 03 ...
Страница 675: ......
Страница 676: ......