22 GB
Operation
j The LCD
1
now indicates the present mains voltage
in V (volts).
Q
Measure mains frequency
j Press the “DOWN” button
4
until the power frequency
symbol
11
(Hz) appears in the centre of the LC display
1
.
j The LCD
1
now indicates the present mains frequency
in Hz (Hertz).
Note: the wattmeter indicates mains frequencies in a
range of 40 to 70 Hz. In Europe a frequency of 50 Hz is
used for the general power supply system.
Q
Show power factor
j Press the “DOWN” button
4
until the power factor
symbol
18
(“Power Factor”) appears in the centre of the
LC display
1
.
j The LC display
1
now indicates the power factor.
Note: the power factor expresses the ratio of real
(active) to theoretical (apparent) power consumed by
an electrical device. The power factor can be between
0 and 1. Ideally, the power factor is 1.
56861_Energiekostenmessgeraet_Content_GB-HU-SI-DE.indd 22 30.11.10 14:12