Chauvin Arnoux C.A 6116, Руководство пользователя

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3.12.4. PowER fACtoR
In the case of sinusoidal signals, the sign of cos
j
indicates whether the measurement is being made on a generator (cos
j
<
0) or on a receiver (cos j > 0). The power factor, PF, can be regarded as equivalent to cos j but generalized to non-sinusoidal
signals, which is often the case with currents.
However, on the C.A 6116, the sign of the PF is treated conventionally, meaning that it indicates only the phase advance or delay
(inductive or capacitive load) and not whether a receiver or a generator is involved.
The phase angle is counted algebraically. It represents the angular difference of the voltage vector with respect to the current
vector, taken as reference.

For help with connections or any other information, use the on-line help.
i(t)
ϕ
ϕ
V
i
+
V(t)
time
Indications provided by the C.A 6116
Phase[V(t);i(t)] Type of equipment Reactive component Mean power
1
Sign of the PF
-180° < j < -90° Generator inductive Negative Positive
- 90° < j < 0° Receiver capacitive Positive Negative
0° < j < +90° Receiver inductive Positive Positive
+90° < j < +180° Generator capacitive Negative Negative
1: under the receiver convention.
3.12.5. ERRoR InDICAtIon
The commonest errors in the case of a power measurement are:
„
The voltage is outside the measurement range.
„ The frequency is outside the measurement range.
„
The current is too low to be measured.
„
The power measured is negative. Check that the clamp is correctly placed on the cable (look at the direction of the arrow). If
it is it means that, what you are measuring is power returned (from receiver to generator).