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eng
6. Device design and principle of operation
Design of autotransformer
Voltage control (in a wide range) makes by changing of transformation
coefficient with certain load power. Changing of transformation coefficient makes
by moving of load’s contacts connection, on the autotransformer windings.
Autotransformers are made on the toroidal magnetic conductor, with
wrapped copper windings. Copper windings have opened paths with sliding
contacts (carbon brushes), which provide electrical contact between load and
windings.
The device has turn scale, control knob and voltmeter, located on the
device case. The voltmeter displays effective value of output voltage.
Principle of operation
The transformation coefficient changes during brush moving on the
autotransformer windings. And therefore the effective value of output voltage
also changes.
7. Setting-up procedures
ATTENTION!
If transportation was made at subzero temperatures, please keep
the device not less than 2 hours at a room temperature for the prevention of
condensation.
• Please, make the external examination to be sure there are no mechanical
damages
• Connect a network cable and a loading cable to the device
• connect the supply voltage to the device
