Detecting Transients (Phase To Neutral) - Fluke 43B Application Manual

Fluke 43B
Applications Manual

Detecting Transients (Phase to Neutral)

Disturbances in a distribution system may cause malfunctioning of many types
of devices. For example, resetting computers or false tripping breakers. Events
occur occasionally, making it necessary to monitor the system for a period of
time to find them.
You may look for voltage transients (impulses or spikes) when, for example,
computers are resetting spontaneously.
Open the main menu.
1
2
3
A transient is detected when it
crosses the boundaries of the
waveform.
Select a voltage change of 50%.
If the normal rms voltage is 120V, transients
which deviate more than 60V from the normal
voltage, are detected. (50% of 120V = 60V).
4
50 %
16
TRANSIENTS
(
%rms
VOLTAGE CHANGE
)