DSQC658 ABB 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.

The predominant disadvantage of using dry-type
transformers is the reduced cooling capacity
that limits the achievable power and voltage
ratings for oil-free technologies. Also, they are
typically larger and heavier than oil-filled units.
Consequently, dry-type power transformers have
been traditionally used for power transmission
and distribution with a rated power below 15 MVA
and voltage less than 36 kV.
The decision of whether or not to use dry-type
transformers depends on the environmental
and safety considerations and power needs.
Nevertheless, cost is always a factor and dry-type
transformers are cost-effective. The total cost
of ownership, which includes the total cost of
installation and the additional costs of providing
protection against fire and leakage, translate to
lower civil works and building code requirements
(no containment, fire suppression or fire rated
building structures etc. are required).
Overall, dry-type technologies are the best
transformer choice for specific markets where
ecology and safety are paramount concerns. ABB’s
oil-free transformers provide the best solution for
customers who operate in sensitive areas eg, urban
centers, public buildings, waterways, harbors, offshore wind farms and railways among others →4.
Nevertheless, for large power and transmission
voltage classes, oil-filed transformers are still
today’s only possible choice.