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Dynamo
With the engine running and the starting circuit disconnected, the starter field
winding is without current and the dynastart operates as a dynamo with voltage
regulator. The operation is similar to that of the 6V 45W dynamo with PAL regulator.
The remaining magnetism in the pole shoes excites current in the rotating rotor, the
voltage of which grows in proportion to it speed. When the prescribed value has
been attained, the regulator armature is attracted to the core of the voltage and
current coil, the return switch contacts SK 1 and SK 2 will be connected, and the
dynamo will begin to supply current to the accessories. With the speed increasing
further and the voltage increasing, contacts RK 1 and RK 2 will become
disconnected due to stronger attraction of the regulator armature to the coil whereby
the field winding current circuit will be closed via the resistance R of 10 Ohm value,
the dynamo excitement will drop and the current again decrease to the prescribed
value. At maximum engine r.p.m. the regulator armature is alternately completely
attracted to the coil whereby contacts RK 2 and RK 3 are connected and the stator
winding is without current or is again disconnected and the winding is excited via the
resistance. The voltage fluctuates about the maximum value due to the oscillating
movement of the armature.
PAL 02-9421.04 Regulator With Contactor
– Technical Data And Setting
1. Nominal output
100W
2. Nominal voltage
12V
3. Regulation at nominal output
12.5 to 13.7V
4. Regulation without load
16.5V
5. Connecting voltage
11 to 13.4V
6. Maximum return current /disconnected/
8 amps
7. Regulator operational voltage
13.5V
8. Highest admissible load
7.5 amps
9. Short time /maximum 1/2 hour/ admissible overload
11 amps
10. Mechanical setting values
same as regulator
11. Contactor contacts
– starter circuit connecting voltage
from 6 V
12. Contactor contacts nominal current
28 amps.
13. Maximum short circuit current on contactor contacts
120 amps.
Summary of Contents for 501/01
Page 1: ...orkshop anual This manual covers all Cezeta and N Zeta models M W ...
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