Huarui 11-17kv Three-Phase Oil-Immersed Pad Mounted Transformer

Liaocheng HUARUI Electric Co., Ltd. established in 1996,located in Liaocheng City, Shandong Province, which is one of the shortlisted suppliers of State Grid Corporation of China and belonging to a national high-tech enterprise.


HUARUI Electric is engaged in the research and development, production and operation of dry-type transformers of 35kV and below, combined transformers, prefabricated substations, transmission and distribution and Control equipment, etc. The annual output of transformers exceed 5 million kVA, and the pad-mounted products exceed 2000 sets.

HUARUI Electric occupies a factory area of 17 hectares, with more than 6 hectares of modern factory building. HUARUI Electric has almost than 200 employees and more than 150 sets of specialized manufacturing equipment.

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/oil-immersed transformers in overseas international markets, we all participate in type and special tests of internationally recognized independent testing laboratories, and obtain relevant reports.

Core:

1. The core is made of high quality grain-oriented cold-rollled silicon steel of high magnetic conductivity, by using 45°five-step overlapping method to reduce the no-load loss and no-load current.

2. Simulation analysis method is applied for the core design, thus to precisely and effectively calculate the vibration frequency and scale.

3. Flexible connections are adopted between the core and coils, core and clamps. With these measures, transformer's noise level has been improved by 10-15dB over the conventional products.

LV Winding:

1.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.

2. 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 windings

1. HV windings are manufactured with superior wire conductors, insulated reinforced with fiber glass.

2. The HV windings are cast under vacuum and high pressure conditions resulting the best resin penetration and very low partial discharge( partial discharge for 11kV product could be lower than 5Pc).

3. Optimized structure is adopted for HV windings to improve transformer's electric field. Lighting impulse simulation calculation was adopted for winding model design, thus to substantially improve product's anti-lighting capability.

Tank:

1.The tank is jointed with highquality steel. The surface is eliminated rust phosphate coating and painted with the type of FVC anticorrosive paint.

2.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.

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 20 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: Liaocheng HUARUI Electric Co., Ltd.y established in 1996, Pearl Electric occupies a factory area of 10.5 hectares, with more than 7.2 hectares of modern factory building. HUARUI Electric has almost 200 employees and more than 150 sets of specialized manufacturing equipment. We have many patent certificates, CE 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.