Variable Auto Transformers

As two winding transformers Magnetic and Controls is also engaged in
manufacturing Variable autotransformer with torroidal core type . ’
Variac ‘ is the trademark name of Variable auto transformer.
Variac provides provides a voltage adjustable source of alternating
current electricity . A Variable auto transformer is single coil wound
transformer where two portions of the coil is used as primary and
They are also different from regular auto transformer since they are
equipped with automatic switchgear in order to automatically step up or
down depending on preset condition . Magnetic and Controls Variac helps
in maintaining a steady voltage in customers service during wide range
of load condition . By exposing a part of winding coil and making the
secondary connection through a sliding brush a continuously variable
turns ratio can be obtained allowing very smooth control of voltage.
We manufacture both single phase and three phase variac.

FEATURES OF SINGLE PHASE AND THREE PHASE VARIAC