Operation
6.1 Operation
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
197
Opening and closing via remote access
Remote access is possible in two ways:
● Via the communication system, the precondition being a COM connection and the COM
actuator module
● Via direct electrical signals on the auxiliary conductor terminal system
The circuit breaker can be closed and opened by remote access. For this purpose, the
optional closing coils (CC) / shunt releases (ST) must be installed. You will find information
on these coils in Section AUTOHOTSPOT.
Closing/opening the circuit breaker via the communication system
1. Charge the storage spring if it is not already charged.
It is advisable to use the accessory spring charging motor (MO) so that the spring energy
store can be charged via the communication system, too.
2. Transmit a closing/opening command via the COM connection and control system.
Closing/opening the circuit breaker via the auxiliary conductor terminal system
1. Charge the spring energy store if it is not already charged.
2. Transmit the closing/opening command to the closing coil (CC, CLOSED) or the shunt
release (ST, OPEN).
Note
A change of parameters during operation is accepted unless the protection function affected
is in the picked
-up condition (is actively metering or is above the newly set threshold value).
powerconfig is a commissioning and maintenance software for all communication-capable
SENTRON products from Siemens. With this software, the circuit breaker can be
parameterized, commissioned and its settings can be archived and, in the operating phase,
values from the installation (current, voltage, etc.) read out and the status of the circuit
breaker can be acquired.
Setting the parameters and line frequency on the electronic trip units of the 3-series
The releases of the ETUs of the 3-series have rotary coding switches and DIP switches. The
parameters of the protection releases L, S, I, and G are set with the relevant rotary coding
switch; the neutral protection and the line frequency are set with the DIP switches.
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