Hioki PW3337-01 - Calculation Formulas Specifications; Voltage Channel and Sum Value Calculation Formula

5.5 Calculation Formulas Specifications
161
Basic measurement parameter calculation formulas
5.5 Calculation Formulas Specifications
(1) Voltage basic calculation formulas
Item (RECTIFIER) Calculation formulas
RMS value (AC+DC)
Average value rectification
RMS value converted value
(AC+DC Umn)
Simple average value (DC)
AC component RMS values (AC)
Fundamental wave component RMS
values (FND)
U
1(i)
from harmonic calculation formula
Waveform peak value
Displays the maximum absolute value from the above with its polarity.
Total harmonic distortion
U
thd(i)
from harmonic calculation formula
Ripple rate
Crest factor
(i): Measurement channel; M: Number of samples between synchronized timing points; s: Sample point number
Voltage channel and sum value calculation formula
Wiring
1P2W 1P3W 3P3W 3P3W2M 3V3A 3P3W3M 3P4W
All channels Sum values
See note.
Basic calcula-
tion formula
U
(i)
Note:
Above applies to RMS values (AC+DC).
For average value rectification RMS values (AC+DC Umn), simple average values (DC), AC component RMS values
(AC), and fundamental wave component RMS values (FND), replace U
(i)
with U
mn(i)
, U
DC(i)
, U
AC(i)
, and U
1(i)
.
∑
1M
0s
2
s)i()i(
)u(
M
1
U
−
=
=
|u|
M
1
22
π
U
s)i(
1M
0s
)i(mn
−
∑
=
=
∑
1M
0s
s)i()i(DC
u
M
1
U
−
=
=
2
)i(DC
2
)i()i(AC
)U()U(U −=
U
pk(i)
=
U
pk
+ (i) : u(i)
s
Maximum value from M values
U
pk
- (i) : u(i)
s
Minimum value from M values
100
|U|2
)|UU(|
U
)i(dc
)i(pk)i(pk
)i(rf
×
×
=
+ −
−
DC
)i(
)i(pk
)i(cf
U
U
U =
)UU(
2
1
U
)2()1(sum
+=
)UUU(
3
1
U
)3()2()1(sum
++=