Connecting the auxiliary conductor terminal

Further loads can be connected to the transfer switching equipment using the auxiliary conductor terminals (3KC9622-2). The auxiliary conductor terminal makes it possible to connect a dual power supply (3KC9625-1) and the autotransformer (3KC9624-1) to the main circuit connections. The auxiliary conductor terminal can be mounted in each box terminal of the transfer switching equipment without reducing the connection options.

Procedure

See the table below for the requirements of the supply lines needed for the connection:

Cu

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Ue = 415 V AC / 240 V AC

Uimp = 2.5 kV

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0.5 ... 1.5 mm2

Ie = 12 A

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  1. Connect the supply lines with the auxiliary conductor terminal in accordance with the figure.

  2. Tighten the contacts with a screwdriver.

  3. Auxiliary conductor terminal without bridging bar:
    Mount the auxiliary conductor terminal in the lower opening of the box terminal, as shown in the figure. The orientation of the auxiliary conductor terminal is with the screws on top so that the supply lines to the upper opening of the box terminal are not affected.   

    98614848267.png
    Mounting the auxiliary conductor terminal without a bridging bar

    Mounting the auxiliary conductor terminal with a bridging bar
    Mount the auxiliary conductor terminal in the upper opening of the box terminal, as shown in the figure. The orientation of the auxiliary conductor terminal is with the screws on the bottom.
    Connecting a further cable in the upper opening of the box terminal is not permissible in this case.

    98616094219.png
    Mounting the auxiliary conductor terminal with a bridging bar
  4. Connect the cables of the main circuit with phase equality.

  5. Tighten all the screws of the box terminals. The screws of the unassigned box terminals must also be tightened.