Dc Busbar; Circuit Breakers - Siemens SINAMICS G130 Engineering Manual

DC busbar

The DC busbar for Cabinet Modules is available as an option (M80 - M87) and must be ordered separately. In
contrast to other 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 system can be dispensed with.

Circuit breakers

Line Connection Modules for current ratings up to 800 A are equipped as standard with a manually operated fuse
switch-disconnector. SIEMENS circuit breakers from the SENTRON WL 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 exacting standards of a multi-motor plant
configuration. 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 endurance 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.
Equipment plate of a circuit breaker
SINAMICS S120 Cabinet Modules
[ ]
/OK
Engineering Information
SINAMICS Engineering Manual - May 2008
© Siemens AG
269/396