Total Harmonic Distortion
50
∑
(
V
h
h
2
THD
V
1
50
∑
k
factor
h
Specifications
General
Display:
Quality:
Memory:
Interface:
Sample rate:
Line frequency:
Temperature Ranges
Working temperature
range:
Storage temperature
range:
Operating temperature
range:
2
)
100
%
2
⎛
⎞
I
⎜ ⎜
⎟ ⎟
2
h
h
I
⎝
⎠
1
RMS
¼ VGA Graphic Color transmissive displays 320 x 240 Pixel
with additional background lighting and adjustable contrast,
text and graphics in color.
Developed, designed and manufactured according to DIN ISO
9001
4 MB Flash memory, from this 3.5 MB for measuring data;
USB/RS232 USB with Mini USB B socket
10.24 kHz
50 Hz or 60 Hz, user-selectable, with automatic
synchronization
-10 C to +50 C
-20 C to +60 C
0 C to +40 C
Total Harmonic Distortion
V1 to RMS of the fundamental
Vh to RMS of the h-th harmonic
k-factor
I
... h-th harmonic (amps)
h
I
... RMS amps
RMS
h ... harmonic order
Power Logger
Specifications
57