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A-15
Protection
Micrologic 5.0 / 6.0 / 7.0 P
+
Long time (rms)
Micrologic 5.0 / 6.0 / 7.0 P
DB128043
Current setting (A)
Ir
= In x …
0.4 0.5 0.6 0.7
0.8 0.9 0.95 0.98 1
Tripping between 1.05 and 1.20 x Ir
Other ranges or disable by changing long-time rating plug
Time setting
t
r
(s)
0.5 1 2 4
8 12 16 20 24
Time delay (s)
Accuracy: 0 to -30 % 1.5 x Ir
12.5 25 50 100 200 300 400 500 600
Accuracy: 0 to -20 % 6 x Ir
0.7
(1)
1 2 4
8 12 16 20 24
Accuracy: 0 to -20 % 7.2 x Ir
0.7
(2)
0.69 1.38 2.7
5.5 8.3 11 13.8 16.6
IDMTL setting
Curve slope
SIT VIT EIT HVFuse DT
Thermal memory
20 minutes before and after tripping
(1)
0 to -40 % -
(2)
0 to -60 %
Short time (rms)
Pick-up (A)
Isd
= Ir x …
1.5 2 2.5 3
4 5 6 8 10
Accuracy: ±10 %
Time setting t
sd
(s)
Settings
I
2
t Off
0
0.1 0.2 0.3
0.4
I
2
t On -
0.1 0.2 0.3
0.4
Time delay (ms) at 10 Ir
t
sd
(max resettable time)
20 80 140 230 350
(I
2
t Off or I
2
t On)
t
sd
(max break time)
80 140 200 320 500
Instantaneous
Pick-up (A)
Ii
= In x …
2
3 4 6
8 10 12 15 off
DB128044
Accuracy: ±10 %
Time delay
Max resettable time: 20 ms
Max break time: 50 ms
Earth fault
Micrologic 6.0 P
Pick-up (A)
Accuracy: ±10 %
Ig
= In x …
A B C D
E F G H J
In
y
400 A
0.3 0.3 0.4 0.5
0.6 0.7 0.8 0.9 1
400 A < In < 1250 A
0.2 0.3 0.4 0.5
0.6 0.7 0.8 0.9 1
In
u
1250 A
500 640 720 800 880 960 1040 1120 1200
Time setting t
g
(s)
Settings
I
2
t Off
0
0.1 0.2 0.3
0.4
I
2
t On -
0.1 0.2 0.3
0.4
Time delay (ms)
t
g
(max resettable time)
20 80 140 230 350
DB128045
at In or 1200 A (I
2
t Off or I
2
t On)
t
g
(max break time)
80 140 200 320 500
Residual earth leakage (Vigi)
Micrologic 7.0 P
Sensitivity (A)
Accuracy: 0 to -20 %
I
Δ
n
0.5 1 2 3
5 7 10 20 30
Time delay Dt (ms)
Settings
60 140 230 350 800
Δ
t
(max resettable time)
60 140 230 350 800
Δ
t
(max break time)
140 200 320 500 1000
Alarms and other protection
Micrologic 5.0 / 6.0 / 7.0 P
Current
Threshold
Delay
DB128046
Current unbalance
I
unbalance
0.05 to 0.6 I
average
1 to 40 s
Max. demand current
I
max demand
: I1, I2, I3, IN,
0.2 In to In
15 to 1500 s
Earth fault alarm
I
t
10 to 100 % In
(3)
1 to 10 s
Voltage
Voltage unbalance
U
unbalance
2 to 30 % x U
average
1 to 40 s
Minimum voltage
U
min
100 to Umax between phases 1.2 to 10 s
Maximum voltage
(4)
U
max
Umin to 1200 between phases 1.2 to 10 s
Power
Reverse power
rP
5 to 500 kW
0.2 to 20 s
Frequency
Minimum frequency
F
min
45 to Fmax
1.2 to 5 s
Maximum frequency
F
max
Fmin to 440 Hz
1.2 to 5 s
Phase sequence
Sequence (alarm)
Δ
Ø
Ø1/2/3 or Ø1/3/2
0.3 s
Load shedding and reconnection
Micrologic 5.0 / 6.0 / 7.0 P
Measured value
Threshold
Delay
DB128047
Current
I
0.5 to 1 Ir per phases
20 % tr to 80 % tr
Power
P
200 kW to 10 MW
10 to 3600 s
Power
Micrologic 5.0 / 6.0 / 7.0 P
Type of measurements
Range
Accuracy
Current maximeters of
I
1,
I
2,
I
3,
I
N
0.2 x In to 1.2 x In
± 1.5 %
Voltages
V12, V23, V31, V1N, V2N, V3N 100 to 690 V
± 0.5 %
Power factor
PF
0 to 1
± 2 %
Frequency (Hz)
0.1 %
(3)
In
y
400 A 30 %
400 A < In < 1250 A 20 %
In
u
1250 A 10 %
(4)
For 690 V applications, a step-down transformer must be used if the voltage exceeds the nominal value of
690 V by more than 10 %.
Note:
all current-based protection functions require no auxiliary source.
Voltage-based protection functions are connected to AC power via a voltage measurement input built into the circuit breaker.