Datasheet

16 GMC-I Messtechnik GmbH
4.5 Measurement of Composite Voltages and Composite Currents
The multimeter allows for separate measurements of DC and AC com-
ponents of composite voltages and composite currents.
Attention!
!
The sum of the DC and AC components of the measured vari-
able shall not exceed the permissible limit values for overload
according to chapter 5, and/or the response values of the
protective means!
4.5.1 Composite Voltages
Perform the measurement in accordance with chapter 4.3.
DC voltage measurement with superimposed AC voltage
The AC voltage component may be 5 times the full scale value on
50 Hz and 50 times the full scale value from 500 Hz on. The additional
error is then smaller than 2.5% of the full scale value.
AC voltage measurement with superimposed DC voltage
The sum of the AC voltage and the superimposed DC voltage shall not
exceed the permissible limit values for overload according to
chapter 5.
4.5.2 Composite Currents
Perform the measurements according to chapter 4.4.
On the 10 μA ... 100 mA measuring ranges, the sum of DC and AC
component causes an erroneous indication from the threefold full
scale value on up due to the response of the protective means.