INNIS01 ABB Bailey distributed control system industrial DCS module card

Description

Packaging details: if you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.

Price problem: if you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.

Dry-type transformers
In addition to mechanical and electrical design
features, surrounding protective devices such
as fast-acting fire suppression systems and
oil containment structures →3 reduce hazard
potential. And yet the most economical solution
would be to place an oil-filled transformer, with
minimum protection, in a location where it would
not pose a threat. However, power needs often
require transformers to be situated near densely
populated areas, or in the vicinity of waterways or
other sensitive eco-systems. For this reason,
GREENER
02 03
SPECIAL REPORT | TRANSFORMERS 31
dry-type transformers that use alternative
dielectric and coolant materials are primarily
installed in these areas.
All dry-type transformer components are in solid
form; they do not have flash points, nor do they
require bushings. Thus, major causes of fire and
spillage are eliminated. The ability to operate
at high temperatures gives these transformers
increased durability and overload capacity.
Furthermore, by minimizing the impact on the
environment and eliminating the risk of fire, total
costs can also be reduced. Consequently, dry-type
transformers are increasingly used in metropolitan
areas to step down three-phase medium-voltage to
low-voltage for power distribution.
There are a few limited applications in which water
may be used to cool the air or the conductor itself
inside a dry-type transformer. These applications
include installations where cold-water loops are
used to cool other equipment, eg, hydro generation,
marine vessels and offshore wind parks. All other
applications that use dry-type transformers employ
only solid components and are self-extinguishing;
in other words, in case of an arcing failure, no fire
will be sustained once the arc has dissipated. In
addition, the majority of insulating components can
be recycled; these materials can be placed in inert
landfills making waste management effortless and
cost-effective.