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10.4.1 Demagnetization Settings
Figure 61 shows the demagnetization settings.
Figure 61: Demagnetization settings
The start current can be selected from 200mA and up to 30A. For currents up to 7.5A, the
maximum output voltage is 50VDC (up to 100VDC with the automatic booster). For currents more
than 7.5A, the maximum output voltage is 12VDC. If the test object is a large power transformer,
the demagnetization will be faster if the currents up to 7.5A will be selected.
The number of steps can be also adjusted from Very Fast (8 Steps) to Very Fine (20 Steps).
Normally, to reach a smaller final remanence flux and hence better demagnetization quality, you
can select more steps. However, since the mini-ATOS use the Raytech SPP method (See chapter
4.3.1 for more information), the quality of the demagnetization is quite good even when the number
of Steps is set to Very Fast (8 Steps).
90297-0.22 Instruction Manual mini-ATOS
Page 67 of 92
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