ST2883 Series Operation Manual Chapter 7 User guide
7-2
7.2.2 Sample test for standard wave
This test is applicable to batch test.
Modify the test voltage. Press the Standard soft key under the main menu. Choose Auto to enter the page
of auto sample function. Press the Start soft key to automatically change the test frequencies. After a
loop test for DUT is done, a waveform, most suitable for observing test, will be selected. Press Select to
finish the acquisition of standard waveform. Replace a DUT and then press the START button to start
the test. Set some criteria to judge the DUT to be good or bad.
7.3 BDV test
Determine an impulse voltage appropriate to test.
The applied voltage has little effect on the turn-to-turn short test and the layer-to-layer short test of coil,
but the amplitude of the applied impulse voltage has a great impact on the insulation test of coil. ST2883
solves the problem of how to set an appropriate voltage. When it is required to determine an appropriate
voltage for a kind of new product or for trial test, except the industrial specified voltage, ST2883 can
find out the appropriate test voltage by switching on the BDV test function.
Enter the setup page and turn on BDV test. After setting start voltage, end voltage and step voltage, turn
on the corona comparison and return to the measurement display page. Press START to start the test on
DUT from the start voltage and then raise the voltage by step voltage. By observing the corona
discharge (corona transition value), the voltage can be determined. 70~80% of the voltage is appropriate
for test voltage.
