Rucelf LTC-3-6000 [17/20] Device design and principle of operation

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