Pacific Power Source UPC-32 - Page 20

SECTION 2 SPECIFICATIONS
10
2.1.5 WAVEFORM CONTROL SPECIFICATIONS (continued)
EDITABLE
WAVEFORM #
EPROM
WAVEFORM #
DESCRIPTION
1
17
SINE WAVE
2
18
TRIANGLE - 12.1% THD
3
19
SQUARE - 47.1% THD
4
20
PULSE (30° WIDTH) - 153% Avg. THD
5
21
FLAT TOP - 5% THD (PK:RMS=1.309)
6
22
FLAT TOP - 6% THD (PK:RMS=1.295)
7
23
FLAT TOP - 7% THD (PK:RMS=1.282)
8
24
FLAT TOP - 8% THD (PK:RMS=1.269)
9
25
FLAT TOP - 9% THD (PK:RMS=1.257)
10
26
FLAT TOP - 10% THD (PK:RMS=1.246)
11
27
FLAT TOP - 11% THD (PK:RMS=1.235)
12
28
FLAT TOP - 12% THD (PK:RMS=1.225)
13
29
*IEC 77A CLASS 1 - 12.6% THD
14
30
*IEC 77A CLASS 2 - 14.4% THD
15
31
SINE WAVE
16
32
SINE WAVE
*NOTE: IEC 77A (Secretariat) 99 Draft (Sept. 1993)
NOTE: THD is measured as RMS THD with a Distortion Analyzer unless noted above.
Waveform Edit (4.6.2.1) allows modification of existing waveforms, and Waveform Synthesis (Harmonic
Analysis and Synthesis option, (4.6.2.3)) creates waveforms by defining harmonic content.
Waveforms are created using this formula:
WAVEFORM = Σ α
n
sin(nw + δ) n = harmonic number
α
n
= harmonic amplitude (% of fundamental)
δ = harmonic phase angle
For example, the above formula may use values from the following tables:
Waveform #
Description
THD
n
αn %
δ
1
Sine Wave
0%
1
100
0
13
IEC 77A Class 1
12.6%
1
100
0
3
8
0
5
9
0
7
5
0
11
2
0
13
2
0
14
IEC 77A Class 2
14.4%
1
100
0
3
6
0
5
8
0
7
7
0
11
7
0
13
6
0