Table of Contents
Advertisement
The Curve file needs to be filled with values of these constants before uploading them onto
the device.
3. Point based curves (user defined characteristics)
User can define maximum of 20 points for the linear current vs timer characteristics. User
can define this points and convert it into file format as specified in below format. Here the
current value is the multiple of the pickup value and time is the absolute trip time in
seconds.
No
Current
Time
1
1.000
0.441
2
1.026
0.350
3
1.243
0.200
4
1.500
0.147
5
2.000
0.107
6
2.500
0.091
7
3.000
0.080
8
3.500
0.074
9
4.000
0.069
10
4.500
0.065
11
5.000
0.062
12
6.000
0.058
13
7.000
0.055
14
8.000
0.053
15
9.000
0.052
16
10.000
0.050
17
15.000
0.047
18
20.000
0.045
19
25.000
0.044
20
30.000
0.044
As there are different equations for different curves, users need to select appropriate
"Function Type" as indicated in below table along with curve parameters
Function Type
Name
DT
IEC / ANSI Curve/
Recloser curves
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Table 14 Definition for Function Type
Function Type
0
1
Programmable Parameter
Time will be in Setting parameter List
γ
β
α,
,
, n (Fixed Format of
Sequence)
52
Advertisement
Table of Contents
