Technical specifications of the control inputs of the 3KC6 transfer switching equipment

The table below contains the technical specifications for the control inputs of the transfer switching equipment.

Number of inputs

3

Direct current Iin

0.5 … 1 mA

Line resistance

1 kΩ

Pulse duration

60 ms

Power per input

-

Overvoltage protection

-

ESD withstand voltage (contact / air)

4 kV / 8 kV

Impulse withstand voltage Uimp between

inputs and other current-carrying parts

2.5 kV (1.2 μs / 50 μs), increased insulation

Permissible cable cross-section

min. 0.5 mm²

max. 1.5 mm² (solid) / 2.5 mm² (stranded)

Permissible cable length

The maximum length of the cables used must not exceed 10 m. Relays must be used in the event of lengths > 10 m.