The 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. 1000~2000kVA Cast Resin
Dry Type Distribution Transformerwith Protective Enclosure
Overall Outline Drawing for Dry Type Transformer:(Note: just for
structure reference, not for approval.)Ambient conditions for
Conventional transformers using:- Ambient temperature:
Maximum
+40ºC
Minimum -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.)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: 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
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