Siemens SENTRON 3KF LV HRC, Руководство пользователя

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3KF switch disconnectors with fuses
Manual, 09/2019, L1V30580914002A-01
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Further accessories
8
8.1 Auxiliary switches
Purpose of the auxiliary switches
Auxiliary switches are used to query the switch position of the main contacts of the 3KF.
They can be retrofitted if required.
Switching instant of the auxiliary switches
You can set the auxiliary switch to different switching instants (leading/simultaneous). You
will find more information on this in chapter Mounting auxiliary switches (Page 66).
Note
Simultaneous switching means that the main contacts of the 3KF and the auxiliary switch
contacts switch within a tolerance of < 5 ms.
Test function
The 3KF supports a test function for auxiliary switches. The test function enables the
auxiliary switch to be switched to the OFF position of the 3KF switch disconnector without
having to close the main contacts.
The test function is used to check the correct wiring of the auxiliary contacts during
commissioning.
To prevent accidental switching to the "test" position when switching from ON to OFF during
operation, the test position is blocked. To be able to switch to the test position, a lever has to
be operated.