High Voltage Cast Resin Dry Type Distribution Power
TransformerThe cast resin dry type series transformer is the kind
of the transformer with low noise, low loss and low partial
discharge. With rational structure, high-quality material,
scientific design,strict craftmanship and advanced test method, the
characteristics of this series products are as follows:- Flameproof
and no blast, no pollution, no venomous gas.- High dampproot, Safe
operation in 100% vilative humidity and other tough enviroment, no
demoisture procedure is needed.- Strong capacity of heart
resistant.- High over-load capacity, running at 110% rated load,
and 150% rated load at AF.- Contour artistic and compact size, low
cost for installing.- Performance and parameter conform to or excel
the standards of GB, IEC or industry.Overall Outline Drawing for
Dry Type Transformer:(Note: just for structure reference, not for
approval.)Advantage:- Low loss, low noise, low partial discharge,
high reliability- Powerful anti-short circuit capacity, high
anti-lightning impulse capacity- HV coil is Vacuum casted with
epoxy resin with pressure, capabilities for better the cast without
pressure.- Simulating analys is being used in the core model, the
resonance can be avoided and the noise is reduced.- Simulation
calculation and analysis of lightning impulse wave are applied to
HV Coils; anti-lightning impulse capability is improved.Process
Technology:Core:Our transformer's core is made of high quality cold
rolled grain oriented silicon steel sheet with high magnetic
permeability. It is using full 45° slope lamination, so that the
no-load loss and the no-load current are reduced efficiently. We
use Simulating Analysis in the core model design, so that we can
calculate the frequency and size of the vibration exactly and avoid
the core cavity resonance. Between core & windings, and core &
frame, we use spring connection. Then the noise is lower 10 to 15dB
than the standard.LV Winding:LV windings, above 400 kVA capacity,
are adopting superior foil conductors, thus to obtain better
amper-turn balance and reduce more transverse magnetic flux
leakage. Then to greatly improves transformer's anti-short circuit
capability.The wise design of air passage within the winding,
greatly increasing the winding's heat dispersion effect. It helps
to decrease temperature rise and improve products' overload
capability.HV Winding:HV windings are made of superior
copper-conductor wires. Adopting fiberglass to reinforced
insulation.The HV windings are casting under vacuum and high
pressure conditions with Germany HUBERS vacuum Cast Machine. In
this way, transformer's resin can get the best penetration. It can
also greatly reduce its partial discharge (partial discharge for
11kV product could be lower than 5pC).HV windings are adopted
optimized structure to improve transformer's distribution of
electric field. We use our existing technology calculate and
analysis Lightning wave process simulation. Then substantially
improving product's anti-lighting capability.Certificates:We have
established a sound quality management system, and have passed the
certification of ISO9001:2015 quality management system,
ISO14001:2015 environmental management system, and ISO45001:2018
occupational health and safety management system.In order to ensure
product quality and in order to meet the development and supply of
our dry-type transformers in overseas international markets, we all
participate in type and special tests of internationally recognized
independent testing laboratories, and obtain relevant
reports. Packing and Delivery:Ambient conditions for
Conventional transformers using:- Ambient temperature: Maximum
+40ºCMinimum -25ºC- Relative humidity: At 25ºC, not higher than 95%
for daily average humidity and not higher than 90% for monthly
average ambient temperature.- Altitude: less than 1000 meters.-
Seismic level: less than 3m/s2 at horizontal direction and less
than 1.5m/s2 at vertical direction.- Installation environment: No
obvious and heavy pollution, no explosive and corrosive gas and
dust, with good air ventilation and no severe vibration and
shock.(Note: if the application environment is different from the
above standard service conditions, please contact us for customized
designs.)Company Profile:Pearl Electric Co.,Ltd.(Hereinafter
referred to as Pearl Electric) located in Panyu District, Guangzhou
City, which is an enterprise mainly engaged in the R&D and
manufacture of power transmission and transform.Pearl Electric is
the former state-owned Panyu Electrical Motor Factory established
in 1958. To facilitate Company's development, the Company was
formally renamed as Pearl Electric Co., Ltd. in January, 2010.
Pearl Electric occupies a factory area of 10.5 hectares, with more
than 7.2 hectares of modern factory building. Pearl Electric has
more than 600 employees and more than 600 sets of specialized
manufacturing equipment.Pearl Electric is engaged in the research
and development, p
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