I. General "High voltage/low voltage preassembly transformer house" defined by national standard and "box-type transformer house" for short call is composed of high voltage switchgear, power transformer and low voltage switchgear. It is better than civil designs for its advantages like flexible and convenient usage, small volume and floor space, low cost, fast construction, high reliability and beauty and so on. It is widely used in reform of the city network, high buildings, residences, industrial areas, business centre, airports, stations and ports, schools and industrial and mining enterprises and other occasions.
II. Type description Y B Capacity kVA/ high voltage class kV High/low voltage primary scheme no. Structural style: M-""style; P-""style Box-type transformer house
III. Use environmental condition Height above sea level: ≤ 2000m; Environmental temperature: _25~+25; Relative humidity ≤ 95%(when 20); Daily temperature difference 25; Outside wind speed ≤ 35m/s; Inclination pitch ≤ 3; No fire, explosion danger, serious pollution, or chemical erosion occasion.
IV. Structure features Cramped construction, small floor space, high strength and convenient transportation and installation. The users can select different structural style according to their needs. The walls of the transformer house are made of steel plates or A-alloy. The framework is weld by profiled iron or connected by screws. The transformer house is composed of high voltage room, transformer room and low voltage room. The basis is weld by channel steel, which is of high strength. The ectotheca and the door are made of steel plates, composite board and A-alloy, which passed anti-corrosive treatment and can be used outside for a long-period. It is anti-corrosion, waterproof and dustproof, whose figure has conventional type, scenic type and other type designs to meet the requirements of different places. The shell of the transformer house has ventilating unit, heat insulation unit and dust filter. Besides, room-temperature monitor and anti-freezing unit can be added if required. The transformer house has perfect mechanical and electric interlock which meets "five-prevention" requirement. It is also has complete monitoring, control and protection methods and it can be system used with FTU system to satisfy the automation of the distribution network system.
V. Advantages 1. All-round and reliable functions It can cut off the load current and supply all range current protection. There are ring net (double power supply) and terminal two kinds wiring power supply modes. It has the basic functions of that of the civil design transformer. 2. Low cost, small floor space, easy and convenient installation, fast power feed process: A\low cost: Lower investment than that of the civil design transformer station; B\Small floor space: One fifth of that of the civil design transformer station; C\Easy and convenient installation: The operation men on site only need to fasten four installation screws and connect the inlet/outlet cables and the earth lines. D\safe and reliable power supply: Totally-enclosed design, completely insulating structure with protection degree ≥ IP33. Perfect mechanical or electric interlock which meet "five-prevention" for the guarantee of the human safety. 3. The transformer of excellent performance The transformer selects D, yn11 wiring mode with little harmonic component, high quality of the voltage and good wave shape, which can operate steadily in three-unbalance load condition. 4. Easy and convenient maintenance Mobile fuse and completely insulating cable head make the replacement and maintenance easy and convenient.
Guangdong Keyuan Electric Co., LTD is a professional electrical manufacturer engaged in power transformer up to 35kv and other electrical equipment. For instance, amorphous alloy power transformer, dry-type transformer, oil-immersed transformer, with type, combined transformer substation, high and low voltage complete switchgear, rectifier transformer, electric furnace transformer, mining and other special purpose transformer. After nearly 10 years of development, Keyuan Electric has now become one of the major suppliers of Chinese state grid and southern power grid. Keyuan electric is located in Nanhai district, Foshan city of Pearl River delta. As the forefront of reform and opening up, Foshan provides us convenient traffic conditions. Our Industrial park covers an area of 40000 square meters, and the annual design production capacity is almost 300 million dollars. The modern garden-like factory has several functions, for example production, technology development, staff living, learning and entertainment. Hereinto, production plant owns 2 spacious and bright body building, 11 workshops, and more than 260 sets of advanced production and testing instruments, which guarantee the high quality of our production; Perfect function design of the complex and the r&d center adopt ERP management system which provide an advanced platform for e-commerce, operations management, and the product innovation; At the same time, our quiet and graceful staff living area provides employees with a comfortable living environment which owns dine, entertainment, information, learning, and other functions Currently, Keyuan electric has more than 30 senior engineering and technical talents, including 5 senior engineers. The strong technical force provide us with effective guarantee about product research and development. The company has got the certification of ISO9001:2008 quality management system, ISO14001 environmental management system and OHSAS18001 occupational health and safety management system. The amorphous alloy power transformer, dry type transformer, amorphous alloy class H dry type transformer, oil-immersed transformer, pre-installed type transformer, combined transformer, high and low voltage complete switchgear of our own successively won the "Guangdong famous brand", "Guangdong famous quality products", "China AAA + grade credit enterprise", "qualified supplier" and "excellent supplier" of the state grid and southern grid power electric equipment, "eagle enterprises " which was known as providing special support and training up to become listed companies. In 2009, Keyuan Electric was named as national hi-tech enterprise Keyuan Electric always adheres to keep synchronized between management innovation and technology innovation, import modern management mode. At the same time of continuously expanding the sales network to the nationwide, our company is constantly trying to improve the internal management quality, optimize the management system. "Science and technology, energy saving, green, safe, efficient" is always the core principle of our keyuan employees. We will always stick to it and become our customers' loyal service provider and guider of the electric industry.
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