QuadTech Sentry 10 Plus, Instruction Manual

Page: 30 / 85

Page 30 of 85 Operation
Limits:
High Limit: The upper value for a test to be considered a pass. If the measured
value is higher than the high limit the test is considered a fail. In
hipot, leakage current and ground bond test modes a high limit is
required.
Low Limit:
The lower value for a test to be considered a pass. If the measured
value is lower than the low limit the test is considered a fail. In
insulation resistance test mode a low limit is required. In an AC or
DC Hipot test, the low limit FAIL decision occurs at the end of the
programmed test time.
Mode:
The test to be performed such as: AC Hipot (AC), DC Hipot (DC),
Insulation Resistance (IR), Ground Continuity (GC) or Pause (PA).
Step:
The order in which the tests will be performed. For example if
step 1 is a ground continuity test, step 2 an AC hipot and step 3 an
insulation resistance measurement then when the START button is
pressed, the Sentry will perform a GC test followed by an AC test
then an IR test.
Test Time:
Ramp: The period of time for the voltage to climb to programmed level.
Dwell: The period of time for the voltage to settle at programmed level.
Test: The period of time that the voltage is applied to the DUT.
Fall: The period of time for the voltage to decrease back to 0.
Test Current:
Real Current: The resistive current component of the device under test. The
resistive component is attributed to the resistance of the device’s
insulation.
Total Current:
A measure of the resistive and reactive current components of the
device under test. The reactive component is attributed to the
capacitive or inductive components of the circuit
Total Current
Reactive
(Capacitive)
Current
Component
Real
(Resistive)
Current
Component
Total Current "A"
Total Current "B"
"A" "B"
Real "B"
Total "B"
Real "A"
Reactive "B"
Total "A"
Reactive "A"
=
=
=
100
200
> 100% Change
101
100
100
100
>
> 1% Change
0% Change