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CHAPTER 4: SETPOINTS
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
The following table details the 120 points as well as the characteristic for each of them,
and a blank cell where the user can write the time value when the operation (for I > I
or the reset (for I < I
) is required.
pickup
RESET TIME ms RESET TIME ms OPERATE TIME
0.00
0.68
0.05
0.70
0.10
0.72
0.15
0.74
0.20
0.76
0.25
0.78
0.30
0.80
0.35
0.82
0.40
0.84
0.45
0.86
0.48
0.88
0.50
0.90
0.52
0.91
0.54
0.92
0.56
0.93
0.58
0.94
0.60
0.95
0.62
0.96
0.64
0.97
0.66
0.98
OPERATE TIME
ms
ms
1.03
2.9
1.05
3.0
1.1
3.1
1.2
3.2
1.3
3.3
1.4
3.4
1.5
3.5
1.6
3.6
1.7
3.7
1.8
3.8
1.9
3.9
2.0
4.0
2.1
4.1
2.2
4.2
2.3
4.3
2.4
4.4
2.5
4.5
2.6
4.6
2.7
4.7
2.8
4.8
SYSTEM
pickup
OPERATE TIME
OPERATE TIME
ms
ms
4.9
10.5
5.0
11.0
5.1
11.5
5.2
12.0
5.3
12.5
5.4
13.0
5.5
13.5
5.6
14.0
5.7
14.5
5.8
15.0
5.9
15.5
6.0
16.0
6.5
16.5
7.0
17.0
7.5
17.5
8.0
18.0
8.5
18.5
9.0
19.0
9.5
19.5
10.0
20.0
4–123
)
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