Insulation alarm relay acknowledgement (Ack Al. Relay)
You can set the insulation alarm relay acknowledgment as per the usage of loads connected to the relay.
When the relays are connected to loads (for example, horns or lamps), it is advised to turn off these external signaling devices before the insulation level rises back to a level above the setup thresholds. This can be done by pressing the acknowledge button while in insulation alarm state.
In certain system configurations, it is required to prevent this type acknowledgement and only retrigger the relays when the insulation level rises above the setup thresholds. This is done by changing the corresponding parameter.
The allowed values for this parameter are ON and OFF. The default value is ON.
To set the acknowledge alarm relay ON, select.
To set the acknowledge alarm relay OFF, select.
The device monitors the ungrounded power system insulation in accordance with the following timing diagram:
Acknowledge alarm relay ON
Acknowledge alarm relay OFF