Applications
Insulation Testing
The insulation to be tested must have a conductive backing, e.g. if a
joint in plastic or rubber is to be tested, it should be laid on a met- al
sheet. If this is not practical, aluminium foil or copper wire can be
placed behind the joint. Ideally this should be earthed, although this is not
necessary if the area of the metal backing is larger than the area of the
probe by a ratio of at least 1000:1.
Slowly sweep the area to be tested, looking at the probe at all times. When
a fault is passed over, the high voltage corona discharge will change to a
single spark. Remove the probe from the surface and mark the point
where the fault was detected.
NOTE: The electrode size has an effect on the output voltage. For this
reason we recommend a maximum size of 150mm.
Gas Discharge Lamp Testing
The PST-100 can be used to excite gas discharge lamps to confirm that
the vacuum has not been lost.
The lamp/tube should not be fitted, as the high voltage could contact
the fitting and be passed into the wiring, which may damage other
equipment connected to that wiring.
Hold the probe against the glass of the lamp and increase the output
voltage from minimum, if the lamps vacuum is satisfactory, the lamp will
glow where the probe touches the glass.
Ozone Production
Small quantities of ozone can be produced from the high voltage spark,
useful for chemistry lectures, demonstrations etc.
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