TRANSFORMER TESTS VOLTECH AT3600 USER MANUAL
PAGE 7.1.70. VPN 98 - 024 TESTS AND TEST CONDITIONS
In programming the AT3600 you may select the voltage (from 100V to 5.5kVrms),
the frequency (50Hz / 60Hz at the full voltage, or up to 1kHz at reduced voltage), the
current trip level (10µA to 5mApeak), and the ramp up times (1 to 30sec), all to suit
the specification of the transformer under test.
The purpose is to check the safety isolation between windings, windings and core, or
windings and screens, measuring the voltage at which a user specified current is
exceeded, by ramping to a maximum user specified voltage at a user specified
frequency.
The operation is to ramp up the test voltage while measuring the voltage across the
selected terminals and continually monitor the current to check it is below the test
limit.
If target voltage is reached before and the maximum monitored current is met the test
has "Passed".
If the maximum monitored current is met before the target voltage is reached the test
has "Failed".
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