Dc Busbar; Circuit Breakers - Siemens SINAMICS G130 Engineering Manual

7.2.4.5

DC busbar

The DC busbar for Cabinet Modules is available as an option (M80 - M87) which must be ordered separately. In
contrast to other Cabinet Modules, however, this is not a "required" essential option for the Line Connection Modules.
For example, if the Line Connection Module is positioned at the end of a cabinet line and not required to transfer any
DC link energy, then the DC busbar can be dispensed with.
7.2.4.6

Circuit breakers

Line Connection Modules for operation on line currents up to 800 A are equipped as standard with a manually
operated fuse-switch disconnector. SIEMENS circuit breakers from the SENTRON 3WL product range are installed
for higher input currents.
The circuit breaker is controlled and supplied internally. It is not necessary to install additional cabinet wiring or
provide separate control cables.
The Line Connection Module is designed in such a way that the front panel of the circuit breaker projects through a
cutout section in the door, i.e. all control elements and displays for the breaker remain accessible when the cabinet
door is closed.
Equipment of the circuit breaker
The type of circuit breaker used has been selected to meet the requirements of multi-motor configurations. The
modular structure of the Sentron WL also allows the breaker to be tailored to meet specific plant requirements.
Components such as the auxiliary contacts, communication modules, overcurrent release characteristics, current
sensors, auxiliary power signaling switch, automatic reset mechanism, interlocks and moving mechanism can be
replaced or retrofitted at a later date so that the breaker can be adapted to meet new or different requirements.
The main contacts can be replaced to increase the lifetime of the breaker.
The standard features of SENTRON WL circuit breakers are as follows:
·
Mechanical CLOSE and mechanical OPEN buttons
·
Manual operating mechanism with mechanical demand
·
Position indicator 0/1
·
Ready to close indicator
·
Storage status indicator
·
Auxiliary power switch 2NO + 2NC
·
Contact erosion indicator for main contacts
·
Mechanical "tripped" indicator for overcurrent trip system
·
Mechanical closing lockout after tripping
·
Breaker front panel cannot be removed when the breaker is closed
The equipment features and other special characteristics are shown on the equipment plate.
Order No. of circuit-breaker
3WL1210-4CB34-4AN2-Z
Z=A05+C11+C22+K07+S07+T40
Order No. supplement for
"further options"
Equipment plate of a circuit breaker
SINAMICS S120 Cabinet Modules
[ ]
/OK
Main conducting paths
First shunt release F1 or electrical
Undervoltage release F3
SINAMICS Engineering Manual – November 2015
Engineering Information
Closing solenoid Y1
closing lockout
Reset solenoid
Motorized operating
mechanism
Ó Siemens AG
Auxiliary
contacts
415/528