QuadTech Sentry Plus Series Instruction Manual page 28

Dielectric Absorption:
Dielectric Strength:
Dielectric Withstand Test:
Discharge:
DUT:
Frequency:
Ground:
Ground:
Ground Bond Test:
Ground Continuity:
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The physical phenomenon in which insulation appears to absorb
and retain an electrical charge slowly over time. Apply a voltage
to a capacitor for an extended period of time.
discharge it to zero voltage.
for a period of time then connect a voltmeter to it and measure the
residual voltage. The residual voltage is caused by the dielectric
absorption of the capacitor.
The ratio between the voltage at which breakdown of the insulating
material occurs and the distance between the two points subject to
the applied voltage.
This is the most common electrical safety test performed. A high
voltage (either AC or DC) is applied to determine if a breakdown
will occur in the insulation of the DUT. Dielectric Withstand is
also referred to as a hipot (high potential) test.
The act of draining off an electrical charge to ground. Devices that
retain charge should be discharged after an IR test or DC hipot test.
Device Under Test. (i.e. the product being tested).
The rate at which current or voltage reverses polarity and then
back again completing a full cycle, measured in Hertz (Hz) or
cycles/second. AC Line Frequency = 50/60 Hz.
The base reference from which voltages are measured, nominally
the same potential as the earth. Ground is also the side of a circuit
that is at the same potential as the base reference.
Test to verify that all conductive parts of a product that are
exposed to user contact are connected to the power line ground.
The ground bond test verifies the integrity of the ground
connection using a high current AC signal with current level as
high as 30Amps. Ground bond provides a better simulation of how
a product will perform under an actual fault condition.
Test to verify that all conductive parts of a product that are
exposed to user contact are connected to the power line ground.
GC Test normally performed with a low current DC signal that
checks to ensure the ground connection has a resistance of <1Ω.
Leave the capacitor open circuited
Operation
Then quickly