The Oil Immersed Transformer series are the kind of the transformer with low noise, low loss and low partial discharge. With rational structure, high-quality material, scientific design, strict craftsmanship and advanced test method, the characteristics of this series products are as follows:
- Excellent dynamic thermal stability, outstanding short-circuit resistance, high lighting impulse resistance, high reliability.
- With excellent overload capacity, it can long-term operate under 110% load.
- Low lose, energy conservation, run economically and maintenance free.
- Contour artistic, compact size, low installation and maintenance costs.
- Performance and parameter conform to or excel the standards of IEC.
- Fully Hermetically oil tank, effectively preventing air from eroding oil and prolonging the service life of the transformer
Three Phase ONAN ONAF Oil Immersed Distribution Power Transformer
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 noload loss and the no-load current are reduced efficiently.
LV Winding:
- LV windings are adopting superior foil conductors or made of 100% copper wire, thus to obtain better amperturn balance and reduce more transverse magnetic flux leakage. Then to greatly improves transformer's anti-short circuit capability.
- Excellent design of oil passage structure, greatly increasing the coils' heat dispersion effect. It helps to decrease temperature rise of the LV winding and improve transformers' overload capability.
HV Winding
- HV windings are made of superior copperconductor wires. Adopting fiberglass to reinforced insulation.
- 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 antilighting capability.
Insulation construction:
- Aclass level Insulation construction. The high-voltage coil and low-voltage coil are placed with the same center. Between the coils, use the thin paper cylinder with little oil clearance construction.
Tank:
- The tank is jointed with highquality steel. The surface is eliminated rust phosphate coating and painted with the type of FVC anticorrosive paint. It has ability to prevent the corrosion from oil and chemical matter. It can be broadly applied to outdoors with bad environment for its contour artistic, easily installation and maintenance free.
Components:
- All the power transformers equipped with highvoltage bushing, low-voltage bushing, oil-relesase valve earthling boilt, lifting board, name plate, pressure vale and so on. The transformers which are over 800kVA are equipped with signal thermometer and gas relay.
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 Electric is engaged in the research and development, production and operation of dry-type transformers of 35kV and below, combined transformers, prefabricated substations, reactors, oil-immersed power transformers of 220kV and below , transmission and distribution and Control equipment, etc. The annual output of transformers exceed 20 million kVA, and the pad-mounted products exceed 4000 sets.
Our company is committed to providing customers with safe, efficient and intelligent power transmission solutions, and has become a leading enterprise in the domestic nuclear power dry-type transformer and new energy box-type substation industry and a leading enterprise in the environmental protection and energy-saving transformer industry.
(If you want to know more about us, please feel free to check our website
https://pearl-electric.en.made-in-china.com/company-Pearl-Electric-Co-Ltd-.html
Partners:
FAQ:
Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 60 years.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q: Production Time?
A: 30 to 45 days or depending on order requirements.
Q: What's your payment terms?
A: T/T , L/C or negotiation.
Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.
Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.
Q: How can I trust you ?
A: Pearl Electric is the former state-owned Panyu Electrical Motor Factory established in 1958, 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. We have many patent certificates, CE certificate, KEMA certificate, ISO9001 certificate. Our products are widely used all around the world. We believe that we can provide you products of good quality with competitive price. We are the audited diamond supplier of Made-In-China.
Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".
Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.
Quotation and Ordering Required Information:
Transformer Type:
Rated Capacity: kVA
Phase: ( )Three Phase ( )Single Phase
Frequency: ( )50Hz ( )60Hz
Rated Voltage (HV/LV): kV / kV
Tapping Range: ± x %
Insulation Level: LI AC / LI AC
Vector Group: ( )Dyn11 ( )Yyn0 ( )Other
Short-circuit impedance: Uk= %
Service conditions: Altitude: m
Ambient temperature: ºC
Cooling Method: ( )ONAN ( )ONAF
Oil labeling:
Quantities ordered and time of delivery:
Other requires:
(If you have, It will be better send us technical specification/date documents.)
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Pearl Electric Co.,Ltd.
Add: No. 118 Donghuan Road, Donghuan Street, Panyu Distric, Guangzhou City, Guangdong Province, China. ZIP: 511400
Web:pearl-electric.en.made-in-china.com
Audited Supplier 
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