4-2-2
ROTOR
The rotor consists of a laminated silicon steel
sheet core and a field coil which is wound
over the core.
DC current in the field coil magnetizes the
steel sheet core.
Two permanent magnets are provided for the
primary exciting action (RGV13OOOT).
Slip rings are provided on the rotor shaft to
receive DC exciting current from AVR
(RGV12000) and diode unit (RGVl3000T).
A surge absorber is mounted inside of the
insulator.
4-2-3 BRUSH I BRUSH HOLDER
An exciting current is supplied from the A.V.R
to the rotor. The brushes are made of carbon
and the brush-holder of plastic.
It is necessary to keep the contact pressure
between the brushes and slip rings withing
specific limits. Thus, care must be taken of
brush length.
I
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