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Overview of functions
Load shedding
and reconnection
For the pickup and dropout thresholds and time delays,
see the technical appendix.
Load shedding and reconnection depending on current
DB119999
The pickup curve for load shedding and reconnection depending on current is
parallel to the LT I2t and Idmtl curves. If a "without long-time protection" rating plug is
installed, the load shedding/reconnection function based on current cannot be
activated.
b I2t protection: the neutral is taken into account
b Idmtl: the neutral is not taken into account.
This function does not trip the circuit breaker, but can be used to set off an alarm
linked to an M2C or M6C contact (disconnection and reconnection of non-priority
loads).
The load-shedding and reconnection function is determined by thresholds and time
delays.
t
Long-time
protection
curve
3
1
4
2
0
I
1: pickup threshold
2: pickup time delay
3: dropout threshold
4: dropout time delay
The pickup threshold is always greater than or equal to the dropout threshold.
Load shedding and reconnection depending on power
DB119952
Load shedding and reconnection depending on power calculates the total active
power on the three phases. This function does not trip the circuit breaker, but can be
used to set off an alarm linked to an M2C or M6C contact (disconnection and
reconnection of non-priority loads).
The load-shedding and reconnection function is determined by thresholds and time
delays.
t
3
4
1
2
0
P
1: pickup threshold
2: pickup time delay
3: dropout threshold
4: dropout time delay
The pickup threshold is always greater than or equal to the dropout threshold.
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