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6 volt generator

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08-15-2000 06:16:13

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Anyone familiar with the need to polorize a generator? If so what would be the reason to? And how is this done?

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Claus

08-15-2000 08:35:46

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Re: 6 volt generator in reply to Ed, 08-15-2000 06:16:13

The reason is that these generator will put out either plus or minus voltages depending on the magnetic field polarity of the pole shoes. Therefore when one polarizes the generator one imparts a residual magnetic field upon the shoes. Now when the generator starts the field will have a magnetic field of the proper polarity. To accomplish the polarization one would apply a current of the proper polarity to the field coil. Since the high side of the field coil is connected internally to the armature, the access is through the armature (sometimes called the gen terminal).
If you have a positive ground you would apply a negative voltage to the arm terminal. This can be easily accomplished on the 2/9N by placing a jumper accross the two terminal on the cutout relay. On the 8N you would place a jumper from the bat terminal to the arm/gen terminal of the voltage regulator. Never apply voltage to the field terminal of the regulator since you could damage it.
I hope this helps you to understand the reason why it has to be done.
Happy Motoring
Claus

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