Chroma 63800 Series User Manual

Local Operation
3-61
If users choose LINE SYNC as reference period then 63800 regards the input frequency of
power line as load frequency. Moreover, users also can select load current waveform settings
of ALL, POSITIVE and NEGATIVE. The three loading current waveforms are described
separately as below. If users choose LINE SYNC=YES, then users should set the PHASE.
The PHASE is the delay angle of loading current which refer to power line voltage.
The loading conditions of the following three figures (Figure 3-15, Figure 3-16 and Figure 3-17)
are the waveforms getting from V
source
=60V
DC
, I
set
=10A, CF=2, LINE SYNC=YES. The
waveform on the top (Channel 1) is DC voltage V
source
, on the medium (Channel 2) is power
line voltage of frequency 60Hz and on the bottom (Channel 4) is load current.
Figure 3-15 All Figure 3-16 Positive Figure 3-17 Negative
ALL: Using the power line frequency as the reference frequency for the load current, for the
ALL setting, both positive and negative half period of the power line is loading V
source
(UUT).
This load frequency is two times of power line frequency (please refer Figure 3-15). For
example: power line frequency is 60Hz thus the load frequency of the current is 120Hz.
Positive: Using the power line frequency as the reference frequency for the load current, for
the Positive setting, the positive half period of the power line is loading V
source
(UUT). This load
frequency is the same as power line frequency (please refer Figure 3-16, Figure 3-17). For
example: power line frequency is 60Hz thus the load frequency of the current is 60Hz.
Negative: Using the power line frequency as the reference frequency for the load current, for
the Negative setting, the negative half period of the power line is loading V
source
(UUT). This
load frequency is the same as power line frequency (please refer Figure 3-16, Figure 3-17).
For example: power line frequency is 60Hz thus the load frequency of the current is 60Hz.
The setting pages of the three kinds of load current waveforms are shown as below.
ALL
I
s
e
t
=
1
0
.
0
0
A
C
F
=
2
.
0
0
0
L
I
N
E
S
Y
N
C
=
Y
E
S
W
A
V
E
=
A
L
L
P
H
A
S
E
=
9
0
I
p
(
m
a
x
)
=
1
0
0
.
0
A
V = 0 . 0 0 P = 0 . 0 0
I = 0 . 0 0 I p = 0 . 0 0
D
C
R
E
C
T
I
F
I
E
D

Chroma 63800 Series Specifications

General

Brand	Chroma
Model	63800 Series
Category	Test Equipment
Language	English