Additional specifications and description
is an autotransformer?
An autotransformer is an
electrical transformer with only one winding.
It has a single winding with two end terminals and one or more terminals at
intermediate tap points. The primary voltage (400 VAC) is applied to the end
terminals. The secondary voltage is taken from two terminals, one terminal of
which is usually in common with a primary voltage terminal.
Autotransformers are integrated in
Sentera transformer fan speed controllers. Via two 400 V
autotransformers, 3-phase AC fans are controlled in steps by
reducing the motor voltage. Autotranformers can also be used in other
applications that require a voltage reduction.
Sentera has its own production line for
autotransformers. We only use the best quality raw materials
and we work together with reliable suppliers. To minimise the typical humming
noise of transformers, we apply a special impregnated coating.
All this guarantees autotransformers of unrivalled
This autotransformer can be installed in
an electric cabinet. It can be connected via the terminal
block with screws. It has an IP20 protection against
ingress of dust.