InteliMains 210 Global Guide
525
Related applications MCB, MGCB. BTB
Description
The overcurrent alarm is based on IDMT principle. The reaction time of an IDMT
alarm is not fixed, but depends on how much is the protected value above the limit
(Nominal Current (page 175)). The higher is the overcurrent, the shorter the reaction
time will be. All mains phases are evaluated.
The behavior of the overcurrent alarm is adjusted by the following setpoints:
IDMT Overcurrent (page 187) defines the reaction time of the protection
when the current is twice the amount of nominal value.
Nominal Current (page 175) set the nominal current level, where the alarm
starts to be evaluated. The reaction time is infinite at this point.
6 back to List of alarms level 2
Alarm Type BOR
Alarmlist message BOR Overload
Alarm evaluated All the time
Related applications MCB, MGCB, BTB
Description
The alarm is issued when the Bus Left power is over the limit for time period longer
than the delay. The behavior of the overload alarm is adjusted by the following
setpoints:
Overload BOR (page 185) adjusts the overload limit.
Overload Delay (page 185) adjusts the delay
BOR Overload
6 back to List of alarms level 2
Alarm Type Mains protect
Alarmlist message MPR Short Circuit
Alarm evaluated All the time
Related applications MCB, MGCB, BTB
Description
This is a fast overcurrent protection. The following setpoints are related to this
alarm:
Short Circuit BOR (page 186) adjusts the short current limit
Short Circuit BOR Delay (page 186) adjusts the delay in fine steps
MPR Short Circuit
6 back to List of alarms level 2
Alarm Type Breaker open
Alarmlist message No
Alarm evaluated All the time
Bus Left L1 Overvoltage
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