KUC321AE HIEE300698R0001 ABB Comprehensive service of control board interface module

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.

Other techniques improve overall cost-effectiveness
and performance:
• Transformer intelligence via digitalization – ie,
the collection of monitoring and service data to
better use the existing assets and increase their
availability and life expectancy.
• Transformer life cycle management.
• Reusing or recycling materials at the end of life.
Battling the losses by design
Transformer losses have three main components:
load losses, no-load losses and auxiliary losses.
Load losses
Load losses are created by current circulation along
the windings and will vary with the transformer
load. Regardless of the type of transformer, 2-D and
3-D software tools, together with ABB expertise,
allow the designer to minimize these losses,
especially those that cannot be calculated easily –
ie, the losses due to leakage flux (also called stray
losses). These losses can be reduced with magnetic
shunts, which are basically collectors or shields that
avoid leakage flux going to areas like the tank walls,
where the flux would create even higher losses →4.
No-load losses
No-load losses are the losses created in the
transformer magnetic circuit due to the magnetic
flux circulation through it. These losses are incurred
from the very first moment that the transformer is
energized and do not depend on the transformer
load level. The use of new and more efficient
electrical steels reduces these losses. The electrical
steel specific losses, defined as losses per unit mass
at certain conditions, range roughly from 1.22 to
0.70 W/kg, meaning that depending on the type of
material selected, the no-load losses can be reduced
by up to 57 percent from one case to another.
Furthermore, there are ongoing developments in the
field of amorphous electrical steels to further reduce
losses. The use of these amorphous materials is,
however, currently limited to small transformers.
Auxiliary losses
Auxiliary losses are the losses from the transformer
control cabinet and accessories – ie, mainly cooling
equipment such as fans and pumps. Even for a
certain level of load plus no-load losses, there can
be significant differences in terms of transformer
internal temperatures that will determine the
dimensions of the cooling equipment and therefore
its energy consumption.