User Manual
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7.9.- tE Protection
The tE protection function used for increased safety(IEC-60079-7) type motor, it provides 8 extra
inverse time protection curves, to avoid unexpected overheat status.
tE tripping characteristic
tEp
I/Ie
1.0(s)
4.0(s)
4.3(s)
4.6(s)
5.0(s)
5.5(s)
6.0(s)
15.0(s)
3.00
4.00
16.00
17.20
18.40
20.00
22.00
24.00
60.00
3.20
3.48
13.92
14.96
16.01
17.40
19.14
20.88
52.20
3.40
3.08
12.32
13.24
14.17
15.40
16.94
18.48
46.20
3.60
2.76
11.04
11.87
12.70
13.80
15.18
16.56
41.40
3.80
2.50
10.00
10.75
11.50
12.50
13.75
15.00
37.50
4.00
2.29
9.16
9.85
10.53
11.45
12.60
13.74
34.35
4.20
2.11
8.44
9.07
9.71
10.55
11.61
12.66
31.65
4.40
1.95
7.80
8.39
8.97
9.75
10.73
11.70
29.25
4.60
1.82
7.28
7.83
8.37
9.10
10.01
10.92
27.30
4.80
1.70
6.80
7.31
7.82
8.50
9.35
10.20
25.50
5.00
1.60
6.40
6.88
7.36
8.00
8.80
9.60
24.00
5.20
1.51
6.04
6.49
6.95
7.55
8.31
9.06
22.65
5.40
1.43
5.72
6.15
6.58
7.15
7.87
8.58
21.45
5.60
1.36
5.44
5.85
6.26
6.80
7.48
8.16
20.40
5.80
1.29
5.16
5.55
5.93
6.45
7.10
7.74
19.35
6.00
1.23
4.92
5.29
5.66
6.15
6.77
7.38
18.45
6.20
1.18
4.72
5.07
5.43
5.90
6.49
7.08
17.70
6.40
1.13
4.52
4.86
5.20
5.65
6.22
6.78
16.95
6.60
1.08
4.32
4.64
4.97
5.40
5.94
6.48
16.20
6.80
1.04
4.16
4.47
4.78
5.20
5.72
6.24
15.60
7.00
1.00
4.00
4.30
4.60
5.00
5.50
6.00
15.00
8.00
1.00
4.00
4.30
4.60
5.00
5.50
6.00
15.00
Note
:
-. The setting value of tE trip delay will transfer to actually trip time refer above chart
-. To ensure that the regular overload protection act before tE trap time, we suggest choose lower
inverse time curve in overload protection, typically less 15%.
Protection mode
OFF / Alarm / Trip
Trip delay
0.1 ~ 5.0 s
I/I
n
TEp(s)
t(s)
12
15
10
8
4
2
3
5
100
50
20
10
5
3
2
10
9
8
7
6
5
4
3
2
