Schweitzer Engineering Laboratories SEL-352-1 - Interface Boards; Signal Processing Specifications; Figure 1.3: Analog Filter Curve

1-6 Introduction and Specifications Date Code 20010731
SEL-352-1, -2 Instruction Manual
Interface Boards
For more information about available interface boards, see Section 2: Installation.
SIGNAL PROCESSING SPECIFICATIONS
Analog
Data Acquisition:
–3dB cutoff at 1200 Hz, 64 samples per cycle, see Figure 1.3.
Harmonic
Correction
Factor
(60 Hz)
Correction
Factor
(50 Hz)
Harmonic
Correction
Factor
(60 Hz)
Correction
Factor
(50 Hz)
Fundamental 1 1 20
th
1.42 1.21
through 8
th
21
st
1.50 1.25
9
th
1.01 1 22
nd
1.59 1.30
10
th
1.02 1.01 23
rd
1.68 1.36
11
th
1.03 1.01 24
th
1.78 1.42
12
th
1.05 1.02 25
th
1.89 1.48
13
th
1.07 1.03 26
th
2.01 1.56
14
th
1.10 1.04 27
th
2.14 1.63
15
th
1.14 1.06 28
th
2.27 1.72
16
th
1.18 1.08 29
th
2.40 1.80
17
th
1.23 1.11 30
th
2.55 1.89
18
th
1.28 1.14 31
st
2.70 1.99
19
th
1.35 1.17 32
nd
2.86 2.09
Relay Measurement • Correction Factor = Input Signal Level
Figure 1.3: Analog Filter Curve