The Nuvotem-Talema logo on your toroidal transformer is your guarantee of quality and safety. The TALEMA Group has a total commitment to
quality as evidenced by the fact that our manufacturing plants in Ireland and India are
fully approved to ISO-9001. All facilities produce to the highest standards and have many
internationally recognized approvals, including UL, EN, VDE and IEC. All other
international specifications such as Nemko, Semko, Demko, B.S., A.S., can be met according
to customer requirements.
The TALEMA Group's approach to quality and control is
uncompromising with TQC systems in operation throughout the plants and sophisticated
computers closely monitoring performance. The best testimonial of this dedication to
quality is the fact that the TALEMA group of companies have earned J.I.T. and
ship-to-stock status with many customers including major international corporations and
OEM's whose own reputations depend heavily on the integrity of their suppliers.
Click here for more Quality Information
Space savings of up to 50% when supplied with mounting
brackets and terminal blocks for drop-in laminate replacement and up to 64% when supplied
with flying leads instead of terminal blocks. (Many times it is easier to run the lead
from the transformer to the equipment rather than the reverse)
For Sizes up to 1000VA, savings can be even greater as
a centering washer and single centre screw or bolt will usually suffice, eliminating the
need for a mounting bracket.
Up to 50% savings (more when used with a centering washer and screw or bolt). The toroidal core has the ideal shape for producing a
transformer with the minimum amount of material. All windings are symmetrically spread
over the entire circumference of the core, making the wire length very short. This results
in lower winding resistance, and higher efficiency. A higher flux-density is possible as
the magnetic flux is in the same direction as the rolling direction of the silicon-steel
core. A higher current density can be utilised, as the entire surface of the toroidal core
allows efficient cooling of the copper windings.
The iron losses are very small, typically 1.1 Watts/Kg at 1.7 Tesla and 50 Hertz - giving very small magnetizing current, which
contributes to the excellent temperature rating of the toroidal transformer.
Nuvotem-Talema toroidal transformers are manufactured with the highest quality materials which allow a savings of approximately 50%
against conventional laminated transformers, as well as significant space savings against other toroidal manufacturers which
utilize lower grade steel in their production.
Up to 86% at no-load and 36% under load
conditions. Realizing that the initial cost of the transformer is important, it is not by
any means the entire story. International focus on the effect that energy production has
on the environment has resulted in a continuing increase in the cost of energy. The use of
Nuvotem-Talema toroidal transformers in place of conventional laminates offers significant
energy savings.
Nuvotem-Talema toroidal transformers offer a
high degree of dimensional flexibility compared with conventional laminated transformers.
Since cores are produced in our own core manufacturing and annealing facilities at each
site, it is possible to make a core to virtually any diameter and height. Our engineers
work closely with the customer's design group and can usually tailor a toroidal
transformer to fit into tight spaces which would normally be inaccessible to conventional
transformers.
Standard mounting for sizes up to 1000VA is
with a single metal centering washer and mounting screw or bolt making installation quick
and simple. Other popular methods include:
- Resin Center potting with brass inserts or through-hole
- Pressureless mounting Plates
- Complete encapsulation in plastic or metal housings
- PCB Mounting (Through-Hole)
To make replacement of conventional laminated
transformers easier, the Talema Group has developed a series of mounting brackets which
enable the toroid to fit into the same position as the conventional transformer it is
replacing. Click here for more details
Because Nuvotem-Talema cores are manufactured
from a continuous strip of high grade steel, there are no air gaps and loose sheets of
steel or laminations to cause vibration. This stability is further enhanced by the copper
windings which tightly surround the entire circumference of the core.
Approximately 85-95% lower than conventional
laminated transformers. Achieving low levels of stray field is an important consideration
for the equipment designer as the phenomenon can create unwanted noise through
interference with sensitive electronics. A toroidal transformer will generally offer a
reduction of 8:1 in magnetic interference levels compare with traditional frame style
laminate types. Over the years, the TALEMA Group design team has developed a range of
successful techniques which can almost completely eliminate stray field. These specialists
will be pleased to work with you on your specific requirements.
Highly developed production techniques
coupled with material savings resulting from the more efficient design mean that today's
toroidal transformer is extremely cost-effective when compared with similarly rated
conventional units. When taking into account the other hidden benefits such as low stray
field, energy savings, smaller footprint and lower weight, the advantages become very
significant. Generally, with toroidal transformers the larger the size the lower the cost
when compared to traditional types.
Our toroidal specialists are committed to
serving their customer's total needs from custom design through production. In-House
experience allows the company to fit the most power into the smallest device while
retaining the integrity of the circuit. Operating on an international basis with
manufacturing in five different countries, The TALEMA Group is able to better service the
multi-national customer whose design may be in a different country from that of
manufacture.Click here for more Talema Group Information
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Toroidal Transformers
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