Micropro 2 - 3.1
Micropro2-3.1 type relay is pull switch coding switch and tuning method is simple, easy
and intuitive.
Protection settings
Protection thresholds and delays are set using adjustable coding switch
Overload protection
True RMS long time protection with adjustable threshold setting
Short circuit protection
Short time (RMS) protection with adjustable threshold setting
Earth fault protection
True RMS earth fault protection with adjustable threshold and delay settings
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
18
19
Reset button
Rated current value
Power ON button
Current beam for long time
Overload indicator
Grounding protection current setting coding switch
Overload protection long delay current setting switch
Short circuit current of the short time delay setting coding switch
Short circuit current coding switch transient protection
Short circuit transient protection fault indicator
Short time delay short circuit fault indicator
Long delay overload protection fault indicator
Grounding protection fault indicator
Short circuit protection short delay time stubbs switch setting
Overload protection long delay time setting slide switch
Grounding protection time setting slide switch
Reset button
Test release button
Troubleshooting button
1
2
3
4
5
6
7
8
9
10
12
13
14
17
19
18
16
15
11
Intelligent Release
34
C&S Electric Limited
35
C&S Electric Limited
Intelligent Release
RESET
micro
2 - 3.1
pro
In=
2000A
MCU
%I
r
1
40
60
80
100
Load current
Overload
0.8
0.4
0.7
OFF
0.6
1.0
0.5
0.9
0.6
0.2
0.5
OFF
0.4
0.8
0.3
0.7
7
3
6
OFF
5
10
4
8
16
10
14
OFF
12
20
11
18
7
Ir
4
Ir
1
Ir
2
Ir
3
x
In
x
In
x
In
x
In
WM2 Intelligent Trip Unit
Troubleshooting
Test
Reset
t
I
t
G
t
L
ts
0.2S
0.4S
0.6S
0.8S
30S
60S
120S
240S
0.2S
0.4S
Time setting
Time delay (s)
lr= In x
Tripping between 1.05 and 1.2 x lr
Current Setting (A)
Over Load Protection
Micropro 2 - 3.1
0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 OFF
Thermal memory
Output DO single alarm
Time setting
constant time-lag
Short time lsd
lsd = lrx
Pick-up (A)
3, 4, 5, 6, 7, 8, 10, 0FF
Time delay (s)
Instantaneous li
li =lnx
Pick-up (A)
10, 11, 12, 14, 16, 18, 20, 0FF
Instantaneous
1.5 x lr
30
60
120
240
tg (s)
30
60
120
240
2 x lr
7.2 x lr
16.9
33.8
67.5
135
1.3
2.6
5.2
10.4
Indication, Monitoring & Control
Power On Led Indicator
Overload LED indicator
Overload trip LED indicator
Short circuit trip LED indicator
Earth Fault trip LED indicator
(Earlier terminology Long time lr1, Short Time lr2, Instantaneous lr3, Earth fault lr4)
30 min
Optional
tsd (s)
0.2, 0.4
Time delay (s)
constant time-lag
Earth fault lg
160
340
510
680
lg =In x
Pick-up (A)
0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, OFF
tg (s)
0.2
0.4
0.6
0.8
Min. (ms)
Max. (ms)
240
460
690
920
W Nmaster 2
i
W Nmaster 2
i
Summary of Contents for WiNmaster 2
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