MD 9273 Leakage Clamp
Description of Test Functions
19
VFD measurement (Voltage functions only)
In this function the instrument calculates the equivalent base frequency and RMS value of voltage pulses
generated by variable frequency drives. Press the AC/DC button in the TRMS measurement function screen
to enter this mode.
Manual range selection
By pressing the
Auto
button, the range changes from auto-range to the different ranges available. This
function can be used in V and A mode. When the auto-range is not active, the icon
is not showed.
Measuring Power
In the following sections, the functions available in the power measuring mode (position W of the rotary
switch) will be described. To select the desired function the
F
key must be pressed repeatedly until the
required function is selected.
Active power measurement
Measurement of the active power together with measurement of the power factor are shown on the screen.
If the load is inductive, the symbol
will appear on the screen; if the load is capacitive, the symbol
will appear on screen.
