Hioki PW3336-01, Инструкция по эксплуатации

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5.5 Calculation Formulas Specifications
163
(2) Current basic calculation formulas
Item (RECTIFIER) Calculation formulas
RMS value (AC+DC)
Simple average value (DC)
AC component RMS value (AC)
Fundamental wave component RMS
value (FND)
I
1(i)
from harmonic calculation formula
Waveform peak value
Displays the maximum absolute value from the above with its polarity.
Total harmonic distortion
I
thd(i)
from harmonic calculation formula
Ripple rate
Crest factor
(i): Measurement channel; M: Number of samples between synchronization timing points; s: Sample point number
∑
1 M
0 s
2
s ) i ( ) i (
) i (
M
1
I
−
=
=
∑
1 M
0 s
s ) i ( ) i ( DC
i
M
1
I
−
=
=
2
) i ( DC
2
) i ( ) i ( AC
) I ( ) I ( I −
=
I
pk(i)
=
I
pk
+ (i) : i(i)s
Maximum value from M values
I
pk
- (i) : i(i)s
Minimum value from M values
100
| I | 2
| ) I I ( |
I
) i ( dc
) i ( pk ) i ( pk
) i ( rf
×
×
=
+
−
−
DC
) i (
) i ( pk
) i ( cf
I
I
I
=
Current channel and sum value calculation formulas
Wiring
1P2W 1P3W 3P3W 3P3W2M 3V3A 3P3W3M 3P4W
All channels Sum values
See note.
Basic calculation
formula
I
(i)
Note:
Above applies to RMS values (AC+DC).
For simple average values (DC), AC component RMS values (AC), and fundamental wave component RMS values
(FND), replace I
(i)
with I
DC(i)
, I
AC(i)
, and I
1(i)
.
) I I (
2
1
I
) 2 ( ) 1 ( sum
+ =
) I I I (
3
1
I
) 3 ( ) 2 ( ) 1 ( sum
+ + =