Siemens SIRIUS Series, Системное руководство

Страница: 119 / 182

Accessories
12.4 3-phase busbar
SIRIUS 3RA6 Compact Starter
System Manual, 02/2008, GWA 4NEB 560 0601-02 DS 02
117
12.4 3-phase busbar
12.4.1 Description of the hardware
3-phase busbars enable several compact starters to be fed using a single infeed terminal.
The 3-phase busbars are finger-safe in terms of touch protection. They have been
dimensioned to withstand the level of short-circuit stress that can occur on the output side of
the connected compact starters.
Rated operating voltage/current
● Rated operating voltage: 690 V
● Rated current: 63 A
Versions
Depending on the version selected, the 3-phase busbars can be used to connect between
2 and 5 compact starters.
Combining compact starters with SIRIUS circuit breakers
You can combine compact starters with size S0 circuit breakers.
If you wish to combine compact starters with size S00 circuit breakers you will need to use a
connection piece (3RV1915-5DB). This connection piece is required, because the compact
starters and size S00 circuit breakers have different depths.
For additional information on combining the compact starter with SIRIUS size S00 circuit
breakers, please refer to "3-phase busbar (Page 34)".
Extending 3-phase busbars
The 3-phase busbar can be extended by adding another busbar (rotated by 180°) and
pushing the terminal lugs of this new busbar underneath the terminals of the last compact
starter (see Configuration).
CAUTION
Material damage to the busbar and connecting terminals!
Thermal overloads can damage the busbar and connecting terminals.
When extending the 3-phase busbar, please remember to observe its current carrying
capacity.