Siemens SENTRON, Manual

Page: 65 / 224

Connection
6.2 Connecting the main circuit
Manual, 08/2017, L1V30368969104A-02
65
6.2.5.3 Connecting current ratings 2000 A to 3200 A to the main circuit (on the load side)
The load-side connection of current ratings 2000 A to 3200 A to the main circuit is described
in the following section. Different connection variants are possible here (versions listed in the
form of a table in the section titled Copper bar connection kit (Page 49)).
WARNING
Hazardous voltage!
Ensure there is no live voltage before connecting the transfer switching equipment to the
main circuit.
NOTICE
System damage
Connect the power supply systems with phase equality.
Note
If you are using the 3KC8 transfer switching equipment, mount the corresponding
accessories for the electronic module. For information, see the section titled Connecting the
inputs and outputs of the electronic module (3KC8 only) (Page 89).
Busbar requirements
Busbars with the following minimum dimensions must be used for load-side connection:
● Minimum copper busbar for I
th
2000 A = 3 x 100 x 5 mm
● Minimum copper busbar for I
th
2500 A = 4 x 100 x 5 mm
● Minimum copper busbar for I
th
3200 A = 3 x 100 x 10 mm