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A-45
Micrologic 6.2 / 6.3 E-M
Ratings (A)
In at 65 °C
(1)
25 50 80 150 220 320 500
Circuit breaker
Compact NSX100
b b b
-
-
-
-
Compact NSX160
b b b b
-
-
-
Compact NSX250
b b b b b
-
-
Compact NSX400
-
-
-
-
-
b
-
Compact NSX630
-
-
-
-
-
b b
L
Overloads: Long-time protection
Pick-up (A)
Ir
Dial setting
Value depending on trip-unit rating (In) and setting on dial
Tripping between
1.05 and 1.20 Ir
In = 25 A Ir = 12 14
16
18
20
22
23
24
25
In = 50 A Ir = 25 30
32
36
40
42
45
47
50
In = 80 A Ir = 35 42
47
52
57
60
65
72
80
In = 150 A Ir = 70 80
90
100 110 120 130 140 150
In = 220 A Ir = 100 120 140 155 170 185 200 210 220
In = 320 A Ir = 160 180 200 220 240 260 280 300 320
In = 500 A Ir = 250 280 320 350 380 400 440 470 500
Keypad setting
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Trip class as per IEC 60947-4-1
5
10
20
30
Time delay (s)
tr
1.5 x Ir 120
240 480 720 for warm motor
depending on selected trip class
6 x Ir
6.5
13.5 26
38 for cold motor
7.2 x Ir 5
10
20
30 for cold motor
Thermal memory
20 minutes before and after tripping
Cooling fan
Settings for self-cooled or fan-cooled motors
S
0
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Pick-up (A)
accuracy ±15 %
Isd
= Ir x ...
5
6
7
8
9
10
11
12
13
Time delay (ms)
tsd
non-ad
j
ustable
Non-tripping time
20
Maximum break time
60
I
Short-circuits: Non-adjustable instantaneous protection
Pick-up (A)
accuracy ±15 %
Ii
non-ad
j
ustable
425 750 1200 2250 3300 4800 6500
Non-tripping time
Maximum break time
0 ms
30 ms
G
Ground faults
Pick-up (A)
accuracy ±10 %
Ig
= In x ...
Dial setting
In = 25 A Ig = 0.6 0.6 0.6 0.6 0.7 0.8 0.9 1
Off
In = 50 A Ig = 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Off
In > 50 A Ig = 0.2 0.3 0.4 0.5 0.6 0.7 0.8 1
Off
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Time delay (ms)
tg
0
0.1 0.2 0.3 0.4
Non-tripping time
20 80
140 230 350
Maximum break time
80 140 200 320 500
Phase unbalance or phase loss
Pick-up (A)
accuracy ±20 %
lunbal
= in % average current
(2)
ad
j
ustable from 10 to 40 %, default setting = 30 %
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activated during motor starting
Time delay (s)
tunbal
0.7 s during starting
1 to 10 seconds during normal operation, default setting = 4 seconds
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Locked rotor
Pick-up (A)
accuracy ±10 %
Ijam
= Ir x ...
1 x 8 Ir with Off position, default setting = Off
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disabled during motor starting
Time delay (s)
tjam
=
1 to 30 seconds
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Under-load (under-current)
Pick-up (A)
accuracy ±10 %
Iund
= Ir x ...
0.3 x 0.9 Ir with Off position, default setting = Off
Fine ad
j
ustments in Ir x 0.01 steps using the RSU software
activated during motor starting
Time delay (s)
tund
=
1 to 200 seconds
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Long starts
Pick-up (A)
accuracy ±10 %
Ilong
= Ir x ...
1 x 8 Ir with Off position, default setting = Off
Fine ad
j
ustments in Ir x 0.01 steps using the RSU software
activated during motor starting
Time delay (s)
tlong
=
1 to 200 seconds
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(1)
Motor standards require operation at 65 °C. Circuit-breaker ratings are derated to take this requirement into account.
(2)
The unbalance measurement takes into account the most unbalanced phase with respect to the average current.
559E1500.indd
version: 1.0