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Protection unit MP4.10
10. Protection and measurement alarms
The alarms visible in the alarm history are listed in the following table:
ALARMS
DY
DESCRIPTION
SYMBOL
Phase
I1>0,9Ir
current L1
Phase
I2>0,9Ir
current L2
Phase
I3>0,9Ir
current L3
Current
IN>0,9Ir
N
Phase
I1>1,05Ir
current L1
Phase
I2>1,05Ir
current L2
Phase
I3>1,05Ir
current L3
Current
IN>1,05Ir
N
Avertemperature
T>Tmax
alarm
Overtemperature
T>>Tmax
intervention
Phase
Phases
sequence
sequence error
Power
P>Pmax
P1-P2-P3
DEFAULT
COMPARISON
THRESHOLD
more than
90% Ir
90% Ir
more than
90% Ir
more than
more than
90% Ir N
105% Ir
more than
105% Ir
more than
more than
105% Ir
105% Ir N
more than
more than
90°C
95°C
more than
-
more than
In
[A]
630
800
1000
1250
1600
more than
2000
2500
3200
4000
5000
6300
DEFAULT
HYSTERESIS
STATE
active
active
active
active
active
active
active
active
active
active
active
Ptot
[kW]
1310
1664
2080
2601
3329
active
4161
5202
6658
8323
10404
13109
DELAY
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
not
not
available
available
5%
1 sec
85
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