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Measurement
Function
Fundamental
Impedance
Parallel
Equivalence
Electrical Energy
(Wh)
Electric Energy +/-
Electric Quantity
Electric Quantity
+/-
Torque
Rotation Speed
Mechanical Power
Mechanical
Energy
Calculation Formula
1
----------- - p t d
W
=
update
3600
>
,
if W
0
W
update
+
<
,
if W
0
W
update
-
1
----------- - i t d
q
=
update
3600
>
,
if q
0
q
=
update
+
<
,
if q
0
q
=
update
-
T
=
torque
n
=
speed
2π
⋅
----- - torque speed
P
=
M
60
1
t
----------- -
E
=
sr
P
t d
M
M
3600
0
in each update cycle
=
W
+
W
+
update
=
W
+
W
-
update
in each update cycle
q
+
q
+
update
q
+
q
-
update
Power Analyzers
Appendix A
79
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