Voltech AT5600, Руководство пользователя

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C H A P T E R 1 4 - A T E D I T O R
AT5600 User Manual 98-119 issue 14
Page 358
14.6.32. MAGX - Mag. Current (External Source)
The Magnetizing Current within a winding may be tested. An AC voltage (from an
external source) is applied across the winding under test and the current flowing
through the winding is measured.
This test uses an external source to provide the test signal which must be coupled
to the tester via a Voltech AC Source Interface (contact your supplier for details).
See the AC Source Interface user manual or the Editor help system for details of
how to configure external AC sources for use with an AT5600.
On selecting "MAGX Magnetizing Current (External Source)" from the available
tests window, a dialog box will be displayed.
To program the test:
1. Enter the test voltage and frequency at which the test is to be carried out. This
is usually at the highest working voltage at the lowest operating frequency.
2. Select the integration time required.
'Medium' is the default setting. 'Long' will give more stable readings (for
tighter limits) at the expense of an increased test time, and 'Short' will test
at the maximum speed, but may give a slightly noisier reading. See 7.3
Explanation of Integration.
3. Enter the terminal names across which the voltage is to be applied and
through which the magnetizing current will be measured.
4. Enter the expected range of magnetizing current. Either use max. - Min. (><)
limit or test against just maximum (<) limits if required.
5. Select OK. The test specification will be displayed in the program window
on the screen.
The Measure button may be used here as outlined in section 14.5.9.