Siemens SENTRON - Connection; Network Types

Manual, 08/2017, L1V30368969104A-02
31
Connection
6
The following content is described in this chapter:
● Network types
● Connection to the source (connecting terminals, connection instructions for each current
rating, required accessories)
● Inputs and outputs of the motor operator and accessories
● Inputs and outputs of the electronic module
● Connection of the transfer switching equipment (motor operator, electronic module,
required accessories)
6.1
Network types
The 3KC4 and 3KC8 transfer switching equipment can be connected to the following
network types:
● Three-phase 4-wire network with 3 phases with neutral (3PH + N)
● Three-phase 3-wire network with 3 phases without neutral (3PH)
● Single-phase network with 1 phase and neutral (1PH + N)
NOTICE
Possible damage to the device
The product is designed for a rated impulse voltage resistance U
imp
of 12 kV for the main
circuit and 4 kV for the electronics and/or motor unit. The dual power supply (DPS)
accessory is designed for a rated impulse voltage resistance U
imp
of 4 kV, and the
autotransformer accessory is designed for 2.5 kV.
When using the product in an application in which overvoltages of > 4 kV or > 2.5 kV can
occur, suitable measures must additionally be taken to limit these overvoltages to no more
than 4 kV or 2.5 kV, respectively.