Dry Transformer Opening Dry Type TransformerDry Transformer
General:By the strict control of material, optimized design,
reasonable processing, SG(H)B10-100- 2500/10 series three phase
opening type transformer passed CTQC (certificate test of quality
control) by State Transformer Quality Supervision& Inspection
Center. To get reasonable structure and artistic appearance, NOMEX
paper from DVPONT Co. And advanced VPI (vacuum pressure
impregnation) technology are both used for the products. It owns
the advantage such as weatherproof, no pollution, safe operation
under high temperature, low partial charge and noise, ideal
dissipation of heat, higher capability of overload. It is the new
generation of dry transformer for the environmental protection. It
is applicable to load center where requires more in fireproofing
and security, such as airport, metro, power plant, metallurgy
plant, hospital, high building, shopping center, residential area,
etc. Dry type transformers are widely used in local lighting,
high-rise buildings, airports, docks, CNC mechanical equipment, and
other places. Simply put, dry type transformers refer to
transformers whose iron cores and windings are not immersed in
insulating oil. The cooling methods are divided into natural air
cooling (AN) and forced air cooling (AF). During natural air
cooling, the transformer can operate continuously for a long time
at its rated capacity. When forced air cooling is applied, the
output capacity of the transformer can be increased by 50%.
Suitable for intermittent overload operation or emergency accident
overload operation; Due to the significant increase in load loss
and impedance voltage during overload, it should not be operated
continuously for a long time in a non economic state. Immersion
type dry-type transformers are usually made by impregnating the
winding with high-temperature resistant insulation paint and
heating and drying it. According to the needs, different
heat-resistant insulation materials can be selected to be made into
B-grade, E-grade, F-grade, H-grade, etc. For example, using NOMEX
insulation material from DuPont in the United States as turn
insulation (imported American technology, the coil surface is
generally white), Open type dry-type transformers using VPI
(vacuum, pressure impregnation) insulation treatment process or
using glass fiber wrapped wire as turn insulation (imported from
Germany, with darker coil surface color)., The latter adopts VI
(vacuum impregnation - no pressure process) insulation treatment
process. Feature:1. Environmental protection: High quality H grade
insulation material is used the product, there is no emission of
hazardous gases under high temperature. Owing to the opening
winding, it is convenient to take copper back for recycling after
the service life. 2. Reliable insulation system: NOMEX paper and
ET-90 series H grade resin is chosen as basic insulation system,
optimized design makes insulation system 180 degrees centigrade -
220 degrees centigrade, which is safe, steady and reliable under
high temperature. 3. Advanced processing technology: Adopting VPI
technology and curing process under the high temperature, the
lacquer film is bright and even, no cracking, the partial discharge
is less than 5PC, with low noise. 4. Overload capacity: H grade
Nomex paper is used for insulation of winding in opening structure.
Its dissipation of heat is faster and temperature rise is even,
which shows higher overload capability. 5. Stronger withstanding
short-circuit capability: VPI process is carried out for H. V.
&L. V. Coils and pre-pressing device such as disc spring and
silicon rubber is put on the end of coils to strengthen the
mechanical strength for both coils and product, which improves its
withstanding short-circuit capability. 6. Weatherproof: The whole
product is coated with H grade insulation lacquer twice. Lacquer
film has the good adhesion, mechanical strength and insulation
performance without cracking. Therefore, it is weatherproof such as
moisture, fog and dust, particularly in serious pollution.
Technical parameters:Rated Capacity(kVA)VoltgeVector
GroupIo (%)Uk(%)Po (w)Pk
(w)(145 C)Weight(kg)Track(mm)HV (kV)Tap
changer(%) LV (kV)100 66.3101110.311 ±
5 %± 2×2.5 %Or
Others0.4 Y,yn0D,yn11 1.1 4 408 2165 550 400
×
400 125 1.0 480 2590 620 550×550 160 0.9 560 3100 725 200 0.9 655 3975 825 250 0.9 760 4675 950 315 0.75 880 5610 1140 400 0.75 1040 6630 1320 500 0.6 1200 7945 1700 660
×
660 630 0.6 1400 9265 2000 630 0.8 6 1345 9775 1700 800 0.8 1695 11560 2025 820×820 1000 0.8 1985 13345 2375 1250 0.8 2385 15640 2720 1600 0.65 2735 18105 3310 2000 0.65 3320 21250 3830 1070×1070 2500 0.65 4000 24735 4450 Our
workshopOur sales teamOur Services1.Pre sale servicea.make
technical solutionb.send quotation, technical data sheet and
drawingc.prepare power transmission plan, testing plan,and shipment
plan2.In sale servicea.supervise the manufacturing schedule totally
in accordance with the planb.send photos
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