Connecting the control circuit

The following chapter describes how to connect the control circuit of the 3KC3 and 3KC6 transfer switching equipment. The connectors required for this are included in the scope of supply.

NOTE

You can find more information on the function of the inputs and outputs and the power supply in the section titled Functions of the inputs and outputs.

WARNING

Hazardous voltage!

Ensure there is no live voltage anywhere before connecting the transfer switching equipment to the control circuit.

NOTICE

Damage to the device

The product is designed for a rated impulse withstand voltage Uimp of 6 kV for the main circuit. The control circuit of the 3KC3 transfer switching equipment is designed for 4 kV and the control circuit of the 3KC6 transfer switching equipment 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, such as surge arresters, must additionally be taken to limit these overvoltages to no more than 4 kV or 2.5 kV, respectively.