7EN02-0421-02

Monitoring power system insulation

The device monitors the ungrounded power system insulation in resistance in accordance with the following timing diagram which represents the default settings:

1 Network insulation is normal and no alarm on any channel.
2 An insulation fault occurred on channel 4. Active alarm is displayed on channel 4. Press button to acknowledge the alarm. See Relay Mode for more information on relay modes. See Relay Acknowledgement for more information on relay acknowledgement.
3 An insulation fault occurred on channel 4. Active alarm acknowledged.
4 The insulation fault is corrected. The alarm LED turns off. The device reverts to normal status.

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