\ BRIEF DESCRIPTION OF THE TRANSFORMER \
DRY-TYPE RECTIFIER VARIABLE FREQUENCY POWER TRANSFORMER- specializes in providing multi-phase rectifier power supply for medium and high voltage inverters. The products are mainly used in dry power plant boiler fans, water supply systems, and automatic control systems for metallurgy, the chemical industry, and urban municipal engineering.
CEEG applies mature technology, fully considers various types of medium and high voltage inverters, and carefully develops ZPSG type NOMEX insulated dry-type rectifier variable frequency transformer. Products include 9-phase, 12-phase, 18-phase, and 27-phase self-cooling and air-cooled types of rectifier inverter transformers. This type of transformer has the remarkable characteristics of small size, strong overload capacity, small partial discharge, strong short circuit resistance, flame retardant, low noise, and energy saving of 40%.
ZPSG series rectifier variable frequency power transformers are suitable for use with high-voltage inverters, mainly in municipal water supply, electric power, metallurgy, petroleum, petrochemical, cement, coal, and other industries.
\ FEATURES \ PROTECT MOTOR & ENERGY SAVING \
1. The secondary side adopts the extended edge delta connection method to reduce the harmonic content of the input current.
2. The iron core adopts the multi-stage stepping process of the through-core positioning structure. Under various working conditions, the iron core has no lateral and longitudinal displacement.
2. Manufactures that passed the inspection of the National Transformer Quality Supervision and Inspection Center earlier in China.
3. At present, domestic manufacturers with larger specifications and capacity frequency conversion are produced.
4. Secondary side phase shifting, the lead adopts a layered structure, and the shape is beautiful.
5. Safe and reliable. Adopt a special air-cooled guide system, ZPSG dry-type rectifier variable frequency transformers are flame retardant, fireproof, and can effectively control the transformer operating temperature, to ensure the safe operation of the equipment.
6. Energy saving and good for environmental protection. ZPSG dry-type rectifier variable frequency transformers produce less pollutant, lower loss, lower partial discharge, lower noise, and have stronger heat dissipation capacity.
7. Maintenance-free, convenient installation, low comprehensive operating cost.
8. Strong seismic resistance.
9. Good heat dissipation performance and strong overload capacity.
10. The maximum capacity of the product can reach 9000kVA, which can achieve 72 pulse waves flow.
\ CERTIFICATED & QUALIFIED \
ZPSG dry-type rectifier variable frequency transformers have conformed to GB12173-2008, GB1094.11-2007, GB/T10228-2015, JB/T3955-2016, GB4208-2017 and other national standards and industry standards, and are suitable for dry power plant boiler fans, water supply systems, and automatic control systems for metallurgy, the chemical industry, and urban municipal engineering. ZPSG dry-type rectifier variable frequency transformers also won the ISO-9001, ISO-45001, and ISO-14001 certificates.
The ZPSG dry-type rectifier variable frequency transformers have been chosen by many industrial giants like Siemens (Shanghai) Electric Drive Equipment Co., Ltd., Beijing ABB Electric Drive System Co., Ltd, Beijing Power Source Technology Co., Ltd., Beijing Kangyisheng Frequency Conversion Technology Co., Ltd Division, Jiangsu Lipu Electronic Technology Co., Ltd., Wuxi Fuji Electric Co., Ltd., Hefei Chunyan Electric Switch, LLC, etc.
\ DESIGN & MANUFACTURE PROCESS \
Based on more than 30 years of design, manufacturing, and experimental experience in the transformer industry, CEEG has developed a set of advanced three-dimensional + parametric design software, which can realize automatic design, cost optimization, and simulation.
Fully considering the requirements of the national and industrial standards, ensuring the advantageous design of products.
The high-voltage winding conductor is wound with a high-quality conductor and reinforced with long and short-cut glass fiber felt. Poured by the advanced Heidrich vacuum pouring system under vacuum. Effectively restrain the occurrence of partial discharge, and the partial discharge is ≤ 5pc.
The low-voltage winding adopts a high-quality foil conductor and is wound on an automatic foil winding machine. The foil winding machine adopts the patented technology of foil wire hydraulic energy-saving tension crimping device, high-precision detection of ±0.5mm, and advanced argon arc welding technology, which plays a key role in ensuring the quality of coil winding.
The iron core adopts a high-quality high magnetic conductivity-oriented silicon steel sheet, a 45° full oblique step lapping process, and the surface adopts special moisture-proof and rust-proof coating, which effectively reduces the no-load current and noise level.
\ TESTING \
All products strictly control the production process and quality links, and conduct strict tests and inspections according to national standards and customized requirements before leaving the factory, including partial discharge inspection, lightning resistance and electric shock inspection, noise inspection, and other necessary inspection items. Advanced test and detection equipment and a perfect inspection and detection system ensure the high quality and high quality of products.
\ USE & INSTALLATION \
SERVICE CONDITIONS -
The installation site shall not be flooded by water, the altitude shall not exceed 1000m, and the ambient temperature shall not be higher than 40ºC. The relative humidity is 100%, and the environment is 40ºC to -25ºC (-25ºC requires an on-load tap changer and temperature controller).
The installation site shall be clean, free of conductive dust and corrosive gas, and have good ventilation or artificial ventilation conditions.
During product installation, it shall be 300mm away from walls and other obstacles, and there shall be a distance of 300mm between adjacent transformers. For distribution boxes and other places with limited installation space, the above distance can be adjusted appropriately.
PACKAGING & TRANSPORTATION - The products can be partially disassembled and transported (such as on-load tap changer, temperature controller, air cooling device, enclosure, etc. can be packaged separately) or packed as one piece in packaging boxes for transportation.
During the lifting process of the package, ropes shall be hung on sleepers at the four corners at the bottom of the package. Special lifting devices should be used to lift the products after the package is opened. It can be lifted 100mm - 150mm above the ground first, and then formally lifted after there is no abnormality.
During transportation, there shall be no upward and downward slope greater than 15° on the road. In order to ensure that the vehicle can bear the load evenly, the product center of gravity shall be located on the vertical centerline of the vehicle during loading. In order to prevent displacement and rollover during transportation, the long-axis direction of the product shall be consistent with the transportation direction, and the product shall be firmly bound on the vehicle.
VISUAL INSPECTION BEFORE INSTALLATION - After opening the package, remove the protective device and check the external conditions, especially paying attention to the mechanical integrity of the coil and iron core, and the bolt fastening at the connection.
After inspection, all fasteners, coils, and iron core pressing parts must be tightened in turn without any looseness.
Use dry compressed air or a clean cloth to clean the dust and dirt on the product.
When the storage time is long and there are water droplets or condensation on the transformer surface, it shall be dried until the insulation resistance of the coil is qualified.
INSPECTION BEFORE OPERATION - Measure the DC resistance of high voltage and low voltage windings. Then check the grounding of the iron core to see whether the grounding is reliable and whether foreign matters are overlapping. Last to test the insulation resistance.
ENERGIZING - Before putting into operation, the transformer shall be put into trial operation under no-load, and the protection system shall be checked and adjusted after 3 times of impulse closing.
When the product leaves the factory, the tap positions of voltage regulation at the high-voltage side are connected according to the rated position. Voltage adjustment is required during operation. The corresponding tap connection voltage is indicated on the nameplate (when there is no excitation voltage regulation), and it must be carried out when the transformer power supply is cut off.
\ ABOUT CEEG \
3 INDUSTRIAL ZONES
4 FACTORIES
15 OVERSEAS BRANCHES
80+ GLOBAL MARKETS
THIS IS OUR DEVELOPMENT -
Headquartered in Nanjing, CEEG has always been adhering to the core values of "foresight, innovation, and responsibility" since its establishment in 1990, focusing on production and manufacturing for more than 30 years. In years of development, CEEG has Integrated independent research and development, intelligent manufacturing, and smart marketing services.
OUR PRODUCT - Our technical team has continued to explore and innovate boldly, and has successfully developed nearly a hundred products including evaporative transformers, load centers, 35kV amorphous dry transformers, nuclear power transformers, slow harmonic transformers, high-temperature transformers; there are also outstanding players in market segments: traction transformers, variable current explosion-proof transformers, multiple Pulse wave phase shifting, wind power conversion, photovoltaic conversion, three-phase three-column amorphous conversion, intermediate test conversion, data center supercomputing mobile equipment, etc. Among them, the star products of the company are the green and energy-saving "amorphous alloy dry-type transformer", the technology-leading "epoxy cast dry-type transformer", and the safe and reliable "flameproof dry-type transformer for mine use and mobile substation". The technology applied to the production has won more than 70 patent technology qualification honors.
OUR PARTNERS - Our products have been safely operating in major coal groups such as Shenhua Group, Anhui Tongling Mining Group, Pingdingshan Coal Industry Group, Jincheng Coal Industry Group, and Kaolain Group. Many well-known companies such as China Mobile, China Telecom, Inner Mongolia First Machinery, Inner Mongolia Pingzhuang Energy, and Jialing Motor also have established good partnerships with us. We also established long-term strategic cooperative relations with excellent enterprises all over the world, and our business partners include many great companies such as DuPont, Siemens, Hitachi Metals, and ABB. Our power transformers have been sold to over 80 countries and regions and got high recognition from customers overseas.
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