Megger Baker AWA-IV User Manual page 108

Test Procedures
Megohm —Starts by ramping up all test leads to operating voltage (500 volts for this example). This voltage
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will be held for 60 seconds during which the analyzer watches for overcurrent trips or insulation resistance values
below the minimum Megohm setting. If a failure is detected, all testing will stop, and the test leads will be
discharged and grounded. You will be given the choice to repeat the test, stop all testing, or continue to the
next test.
„ PI/DA —The DC Tests window will switch its focus to the PI/DA tests column. Because the Test ID in this
example was set up for a Dielectric Absorption (DA) test, the duration of the test is three minutes (180 seconds).
At end of the test, if no failures occur, the software will continue with the next series.
HiPot/Step-Voltage/Ramp-Voltage—The test will begin automatically. For Step-Voltage testing, a new
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window automatically appears to display the test results in progress. Pre-set by the example Test ID, the voltage
is ramped up to 2000 volts in 500-volt steps, and held for 60 seconds at each step. If the analyzer detects a
low Megohm reading or a overcurrent trip, testing will immediately stop, and the leads will be discharged and
grounded. You will be given the choice to repeat the test, stop all testing, or continue to the next test.
Fig 102: Step -Voltage Test window—called automatically from DC Tests process.
If no failures are found during this test, the analyzer will close the Step-Voltage Test and DC Tests windows, and
continue to the Surge test.
96 Baker AWA-IV 71-015 EN V16 User Guide
Fig 101: DC Test window—appears when DC Tests are executed.
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