Insulation alarm relay (Ins. Al. Relay)

You can set the insulation alarm relay mode depending on the status of insulation.

The allowed values for this parameter are FS and Std.. The default value is FS.

When the insulation alarm relay is configured in failsafe (FS) mode:

• The insulation alarm relay is activated, that is, energized, in the following case:

  • No insulation fault is detected.

• The insulation alarm relay is deactivated, that is, de-energized, in the following cases:

  • Insulation fault is detected.

  • On first measurement after power cycle and on toroid disconnect.

  • The product is inoperative (detected by auto-test).

  • The auxiliary power supply is lost.

  • When the voltage signal is unavailable

  • Channel failure

When the insulation alarm relay is configured in standard (Std.) mode:

• The insulation alarm relay is activated, that is, energized, in the following cases:

  • Insulation fault is detected.

  • The product is inoperative (detected by auto-test).

  • Toroid disconnect

  • When the voltage signal is unavailable

  • Channel failure

• The insulation alarm relay is deactivated, that is, de-energized, in the following cases:

  • No insulation fault is detected.

  • On first measurement after power cycle

  • The auxiliary power supply is lost.