Inputs of 3KC3 transfer switching equipment

In addition to the already installed auxiliary switch to indicate switch position, the 3KC3 transfer switching equipment has inputs for power supply and control. The location of these inputs is shown below:

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Inputs of the 3KC3 transfer switching equipment

The inputs of the transfer switching equipment are used to supply power on the one hand (3KC3 only) and to enable remotely operated transfer switching on the other.

Designation

Pin

Meaning

Explanation

Properties

Recommended cable cross-section

Power supply

101, 102

-

Power supply from source I

220 V AC -20% (176 V AC) … 240 V AC +20% (288 V AC)

45 … 65 Hz

0.5 … 2.5 mm²

(solid)

0.5 … 1.5 mm²

(stranded)

201, 202

-

Power supply from source II

Control inputs of

motor operator

313

0

Command for switch to position 0 (if closed with input 317)

Allows the logic to be selected: continuous operation logic if always closed, otherwise impulse logic

Do not supply power.

Use only with floating contacts and supply via pin 317.

314

II

Command for switch to position II (if closed with input 317)

315

I

Command for switch to position I (if closed with input 317)

317

C

Control terminal for inputs 313 - 315

NOTICE

Damage to the device

Do not connect the control inputs to an external power supply.

Avoid any pressure on the power supply and control inputs when connecting additional cables.