Toroidal variable transformer
Revalco
They are used in electromechanical and electronic industries, in laboratories and schools.
Principally are used for:
- manual and automatic control of supplies in measurement switchboard
- speed control in rotating machines
- control of heating machines
- educational demonstrations in schools and colleges
- correctly regulate single-phase and three-phase voltages
In respect of thyristor regulators, the AC voltages control by using these adjustable transformers has the following advantages:
- don't cause frequence interferences
- the output voltage wave is perfectly sinusoidal
- high efficience, low consumption
The adjustable transformers are available in two versions:
- protected by metallic case , usefull for the schools, laboratories, measurement tests
- open execution not protected to be mounted into electrical panels, control switchboards
Excluding the model HST which has the primary separate from the secondary winding, all the models are self-contained transformers.
The adjustable transformers are made of high quality materials and manufactured using modern technology,so when the permissible load capacities
are observed, no particular maintenance is required. With the standard version the cleaning of the slide surface only is required after long periods of
use.
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