Specialist in PD (Partial Discharge)
detection equipment, EA Technology
has added a new Contact Probe to its
range. PD is a major cause of
disruptive failures in high voltage
switch gear. This activity comes in
two forms, internal discharge and
surface discharge.

Surface discharge, up till now, has
been detected with a directional
microphone as ultrasound, requiring
a clear air path to obtain reliable
readings. The new Contact Probe
measures
ultrasound
through the
surface of the
switchgear. This
means PD activity
can now be
detected quickly
and safely before
a disruptive
failure occurs.

Stand E21