Voltech AT5600, Руководство пользователя

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C H A P T E R 7 – T E S T S A N D T E S T C O N D I T I O N S
AT5600 User Manual 98-119 issue 14
Page 153
In practice, the magnetizing current waveform may have a transient component
following the switch-on of the test voltage. To give you repeatable accurate
results, the measurement does not start until any transient has settled.
The test signal can have a frequency in the range 20 Hz to 5 kHz, and an
amplitude from 5V to 600V depending on the type of external source used. The
current rating of a single AC Source Interface is 10A RMS. See also the MAGI
test which uses the AT5600s internal generator which can provide up to 270V AC
at 25W.
Trimming of requested Voltage (when using Step-up transformer
with AC Interface)
When using the AC interface with a step-up transformer, the AT5600 uses the
Class D drive (used on VOC MAGI WATT and STRW) and routes it thought
the AC interface. The AT5600 calculates a nominal value for the voltage
needed to get the target value based on your requested voltage, and the
programmed ratio of your chose transformer. The AT5600 will then attempt to
trim to get the exact value that is needed.
If either of the following two conditions are exceeded, the AT will report a
trimming failure (0020):
If the trimming requires deviation of more than 60% from the nominal
(i.e. 100V nominal, but trimming requires excess of 160 V or less than
40 V)
If the trimming requires outputting more than 230
Please also see
14.6.32 for specific advice on programming the test, and
10.2.7 for test accuracy specification