Compliance West MegaPulse 2x10s-2.5, Instruction Manual

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Note that the peak amplitude of the measured output waveform is proportional to the voltage that
is read on the front panel of the MegaPulse, but it will always be somewhat lower. This is because the
meter on the MegaPulse is measuring the voltage on the main impulse storage capacitor (C1 in Figure 1).
This voltage will intentionally dissipate to some extent before reaching the output leads. Therefore, it is
important to measure the peak amplitude of the output waveform, and adjust the output of the MegaPulse
accordingly.
Determination of Passing and Failing results can prove difficult. To obtain the most accurate
results, it is generally necessary to perform multiple impulse tests on a few different test samples (that have
adequate insulation to pass the impulse test). Take note of the impulse waveshape, amplitude, and
duration. Also note how much variance there is in the waveshape from test to test. Also (if possible),
perform impulse testing on some test samples that are known to have inadequate (or damaged) insulation.
Take note of the impulse waveshape, amplitude, and duration, when an insulation breakdown occurs.
It is possible to perform simultaneous testing on multiple test samples. In order to accurately
determine Passing and Failing test results, it is generally necessary to perform multiple tests with a single
(failing) sample connected along with multiple “passing” samples. Make sure that it is always possible to
distinguish a group of tests samples that are all “passing” from a group with a single “failing” sample.