Siemens 3VA1 100 A, Руководство пользователя

Страница: 222 / 532

Accessories
4.4 Plug-in and draw-out technology
3VA molded case circuit breakers
222
Manual, 04/2015, A5E03603177010-02
Cylinder lock for protection against unauthorized operation
A cylinder lock can be retrofitted in the right-hand side panel of the draw-out socket. Like the
plastic frame and padlocks, this cylinder lock is capable of locking a molded case circuit
breaker in either the CONNECT, TEST or DISCON position. The cylinder lock utilizes the
locking mechanism of the plastic frame. This is evident from the way the plastic frame moves
into or out of the socket as the cylinder lock is turned.
Signaling of locked/unlocked status
The locked or unlocked status of a draw-out unit can be signaled electrically. This requires
the installation of a position signaling switch (3VA9987-0KB00) in the right-hand side panel
of the draw-out socket. This switch signals whether the plastic frame described above is in
the "IN" or "OUT" position. For further details, refer to chapter Position signaling switches
(Page 225).
Integration of molded case circuit breaker position signal into a communication network
The COM800 breaker data server can be used to interrogate various states of multiple
molded case circuit breakers so that the information can be transferred by means of bus
systems. This status information includes states such as "Breaker tripped", "Breaker on",
"Breaker off", reason for tripping, etc. Actual current and voltage measurements can also be
transmitted depending on the version of 3VA circuit breaker installed. To provide this
communications capability, the molded case circuit breaker itself is equipped with a COM060
communication module which functions as the breaker's actual communications interface.