7EN02-0421-02

Checking wiring connection

You can check the wiring of the system once the toroid has been commissioned. Performing this check successfully confirms that the wiring of the device is proper and the device is ready to use.

You can perform any of the following checks:

  • You can induce one dummy fault on one channel. You can perform this check for all channels sequentially.

    1. Induce a dummy fault on one of the channel.

      The device displays the insulation alarm on the detected channel, the alarm LED turns ON, and the no alarm LED turns OFF.

    2. Recover the dummy fault on the channel.

      The device returns to toroid detected state, the alarm LED turns OFF, and the no alarm LED turns ON.

  • You can induce two dummy faults simultaneously on two channels.

    1. Induce a dummy fault on one of the channel.

      The device displays the insulation alarm on the detected channel, the alarm LED turns ON, and the no alarm LED turns OFF.

    2. Induce a dummy fault on the other channel.

      The device displays the insulation alarm on both the detected channels, the alarm LED remains ON, and the no alarm LED remains OFF.

      NOTE: If both the induced dummy faults are zero-impedance fault, then the device displays the insulation alarm on any one of the channel.
    3. Recover the dummy fault on one of the channel.

      The insulation alarm on this channel is recovered. Because the dummy fault still exist on other channel, the device displays the insulation alarm on the other channel, the alarm LED remains ON, and the no alarm LED remains OFF.

    4. Recover the dummy fault on other channel.

      The device returns to toroid detected state, the alarm LED turns OFF, and the no alarm LED turns ON.

NOTE: You are strongly advised not to induce more than one zero-impedance dummy fault.
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