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10.4.1 Demagnetization Settings
Figure 69 shows the demagnetization settings.
Figure 69: Demagnetization settings
The starting current can be selected ranging from 200mA 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. When testing a large power transformer,
selecting currents up to 7.5A will make the demagnetization process faster.
The number of steps can also be adjusted, ranging from a faster option with 8 steps to a finer
option with 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).
Preliminary
90297-0.24 Instruction Manual mini-ATOS
Page 85 of 125
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