Chauvin Arnoux F405 - Active AC Power Measurements

40
Example: for a power measurement made at 10A, the instability of the
measurement will be 0.1A/10A or 1%.
4.2.12 Active AC power measurements
Measurement
range (2) (4)
5 W to
9999 W
10.00 kW
to
99.99 kW
100.0 kW to
999.9 kW
1000 kW (1)
Specified
measurement
range
1 to 100% of the
measurement
range
0 to 100% of the measurement range
Uncertainties
(3) (7)
until 1000A
± (2% R +10 pt)
until 1000A
± (2% R +3 pt)
Resolution
1W
10W
100W
1000W
Note (1) - The bandwith is 3 kHz in voltage and 2 kHz in current in AC
Notes (2) and (3) of the previous § apply.
Note (4) - Any power measured less than 5W causes the display of dashes "----"
Note 5 - The active powers are positive for power consumed and negative for
power generated.
Note 6 - The signs of the active and reactive powers and power factor are defined
by the four-quadrant rule below:
- The diagram below sums up the signs of the power as a function of the
phase angle between U and I:
Quadrant 1 : Active power P sign + (power consumed)
Quadrant 2 : Active power P sign - (power generated)
Quadrant 3 : Active power P sign - (power generated)
Quadrant 4 : Active power P sign + (power consumed)