7. Protections
7.1 Protections check
7.1.1 Points to be considered
As a part of the commissioning, the protections should be checked.
The following points must be considered for each alarm:
● Alarm setpoint
● Alarm delay
● Relay output
● Activation
● Fail class
● Inhibits
For further information about the above-mentioned, see the Designer’s Reference Handbook.
7.1.2 Considerations
Several issues must be taken into consideration when doing the configuration of the alarms. These are e.g.
national rules and requirements, additionally installed protection equipment, required use of the protections
(trip of non-essential load, breaker tripping and engine stopping).
The switchboard manufacturer and the end customer must take these considerations.
7.1.3 Configuration of the protections
The dialogue box shows a typical alarm.
General guidelines for commissioning
4189340703 UK
Protections
DEIF A/S Page 19 of 25
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