V
V
I
I
P
P
C
C
L
L
A
A
M
M
P
P
M
M
I
I
N
N
I
I
Characteristics
- Accuracy: 5% +0.5 A
-Capture time: 10 periods of the signal frequency (200 ms at 50 Hz)
- Range for use:
³
'3d 5 A peak for the first period of the signal
3.8 Power measurement (W var VA)
1.
Connect the measurement leads to the instruments terminals, complying with the polarities indicated: red lead
on the + terminal and black lead on the COM terminal.
2.
Set the rotary switch to position
W
(single phase measurement).
3.
Make a long press on the yellow key for measurement on balanced 3 phases system.
4.
Connect the clamp on the system selected for power measurement, complying with the following instructions:
SINGLE PHASE SYSTEM
-Connect the measurement cables for voltage measurement, red cable on phase, black cable on neutral. -Clamp
the conductor carrying the current to be measured, check for proper closing of the jaws and for foreign bodies in
the gap.
BALANCED 3 PHASES SYSTEM
-
Connect the measurement cable for voltage measurement, red cable on phase 1, black cable on phase 2 (U
12
measurement).
- Clamp the conductor of phase 3 (I
3
measurement).
Nota :
same results are achieved with the following couples of measurement : U
23
with I
1
and U
31
with I
2
.
In both cases the '3f arrow on the jaws, must be directed in the direction of power circulation from the source
to the load. In which case:
- the + sign corresponds to power consumed by the load.
- the - sign corresponds to power supplied by the load.
Specific reference conditions
PF = 1; I
³
'3d 2 A; U
³
'3d 10 V
Active power measurement characteristics
Display range
4000W
Measuring range(2)
Accuracy (3)
Resolution
5a
3999 W
4,00 kW
39,99 kw
2% L +1 pt
1W
40
kW
400 kW
40,0 kW a
240,0kW - 399,9kW(1)
10W
100W
Display range
4000W
Measuring range(2)
Accuracy (3)
Resolution
5a
3999 var
4,00 kvar a
39,99 kvar
2% L +1 pt
1var
40
kW
400 kW
40,0 kvar a
240,0kW - 399,9kvar(1)
10var
100var
Reactive power measurement characteristics
Apparent power measurement characteristics
Display range
4000W
Measuring range(2)
Accuracy (3)
Resolution
5a
3999 VA
4,00 kvar a
39,99 kVA
2% L +1 pt
1VA
40
kW
400 kW
40,0 kvar a
240,0kW - 399,9kVA(1)
10VA
100VA
(1) the scale is limited to 240 kW (kvar, kVA) in one-phase (600 V x 400 A) and 399.9kW (kvar kVA) in 3
phases system. Above this value, the display indicates
+OL
or
-OL
depending on the sign of the
power.
(2) if the power value is < 5 W or if the voltage or current values are respectively < 0.15 V or < 0.15 A,
0
is displayed.
(3) The measurement accuracy is affected by an instability linked to current measurement of approximately
0.1 A.
Example:
for a power measurement performed at 10 A, the instability of the measurement will be 0.1
A/10A, or 1%.
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