Phason Plus Touch Series, Руководство пользователя

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Chapter 2: Installing the Plus Touch
10
Reducing electrical noise using filters
Electrical noise is caused by high voltage transients created when inductive loads, such as power
contactors, are switched on or off. The strength of the transients can be over 1000 volts and can
vary with the type of equipment and wiring, as well as several other factors.
Visible symptoms of electrical noise include erratic control operation, cycling inlets, communication
problems, and more. However, the
effects of electrical noise are not always visible
. Over time,
electrical noise can cause electronic circuits, relay contacts, and power contactors to deteriorate.
Installing filters helps extend the life of equipment
Filters help prevent electrical noise problems by absorbing the transient energy. Even if you do not
have
visible symptoms
of electrical noise, filters help keep controls operating reliably and can extend
the life of the controls and equipment connected to them.
Phason’s snubber filters (
model 127-0
) are for use with solenoids, timer relays, DC motors, furnaces,
and other equipment connected to the control’s relays. You can also use the filters with loads
connected to power contactors..

Do not use Snubber filters with variable stages.

Some power contactors include snubber filters. For more information, read
Using power contactors to increase the capacity of relays
on page 11.

For more information about snubber filters or other Phason accessories, see
your dealer or visit
www.phason.ca
.