10kv, 35kv Three Phase on Load Tap Changer Transformer

1. Brief Description



SZ11 series on-load-tap-changing oil-immersed transformer is an upgraded product developed based on S11 series oil-immersed transformer. The voltage fluctuation and load change of power grid lead to fluctuation of output voltage of transformer during the running. If the voltage is too high or too low, the electric equipment will fail to work normally and even be burnt, and the insulation and efficiency of the transformer will be influenced. To ensure the variation of the output voltage within a reasonable range, voltage regulation is necessary. The product may operate the on-load tap changer manually or automatically to regulate the voltage when it is loaded, or realize remote voltage control through a controller.



2. Application Scope

The product applies to the users who require stable voltage and the voltage fluctuation of power grid is big.



3. Model Description

4. Standards

GB 1094.1, GB 1094.2, GB 1094.3, GB 1094.5,

IEC 60076-1:2000,IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006,GB/T 6451,GB/T 20052,etc



GB 1094.1, GB 1094.2, GB 1094.3, GB 1094.5,

IEC 60076-1:2000, IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006,

GB/T 6451, GB/T 20052, etc



5. Normal Service Conditions

Height above sea level: Not greater than 1,000m;

Ambient temperature: Maximum temperature: +40ºC;

Maximum daily average temperature: +30ºC;

Maximum annual average temperature: +20ºC;

Minimum outdoor temperature: -25ºC;

Installation environment: ground acceleration caused by earthquake: ag<2m/s



6. Features

(1) On-load voltage regulation is possible, thus providing users with stable voltage output.

(2) The low voltage adopts foil winding, thus enhancing the ability of the transformer to withstand the sudden short circuit; as the low voltage adopts copper foil winding, the electric field distribution of transformer is uniform. The low-voltage inner frame adopts formed hard paper tube, while the high-voltage outer half lap is wound with tasteless glass adhesive tape layer by layer. The compression pad adopts the laminated wood, thus enhancing the mechanical strength of the transformer. The transformer uses vacuum oil filling, which may totally eliminate the bubble in the coil, so as to improve the overall ability of the transformer to withstand the sudden short circuit.

(3) The tank rim adopts stainless steel bolts, with beautiful appearance.

(4) The sealing elements adopt formed parts, with the sealing reliability of the transformer enhanced.



Company Profile

Yuebian 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 another special purpose transformer. After nearly 10 years of development, Yuebian Electric has now become one of the major suppliers of Chinese state grid and the southern power grid.

Yuebian electric is located in Yueqing City, Zhejiang Province. As the forefront of reform and opening up, Yueqing provides us convenient traffic conditions. Our Industrial park covers an area of 20000 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 products; 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, Yuebian 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.



Contact Information:

Name: Rayzen He(Mr.)

Mobile: +86 13506557391



Yuebian Electric Co., Ltd.

Add: Jiedai Industrial Zone,

Yueqing City,

Guangdong Province,

China

Web: www.zjyb-electric.com

Tel: 86-577-62566535

Fax: 86-577-62513338

Zip Code: 325600



Yuebian Electric Co.,Ltd, is one of professional power transformer manufacturers in china. We provide Dry Type Transformer on load tap changing transformer and so on. Want to know about mini substation? Please contact us.

The Basic Components of The Transformer

Transformer components include the body of (core, the winding, insulation, lead), transformer oil, fuel tank and cooling devices, pressure devices, protective devices (moisture, safety airways, gas relay, conservator and temperature measuring devices) and bushing.



1. Core



Core transformer in the main part of the magnetic circuit. Usually it consists of a high silicon content, thickness, respectively 0.35mm \ 0.3mm \ 0.27mm, the surface coated with insulating paint hot or cold rolled silicon steel sheet piled up.



Iron legs and cross piece into two parts, legs sheathed with windings; cross-piece is closed magnetic purposes.



The basic form of the core structure determined formula shell two.



2. Winding



It is part of the transformer winding circuit, which is double insulated flat wire or silk bag enamelled round wire wound into.



Yuebian Electric Co.,Ltd, is one of professional electrical power transformer manufacturers. We provide Mini Substation, basic components of a transformer, dry type transformer and so on. Want to know more? Please contact us.

Power Distribution Transformer Oil Immersed Type Transformer

Summary



The performance of 35kV oil-immersed power transformer of the company conforms to or is superior to the requirements of GB1094 Power Transformers and GB/T6451 Specification and Technical Requirements for Three-phase Oil Immersed Power Transformers. Its core is made of high-grade superior cold-rolled silicon steel sheet, and the coil conductor adopts high-quality oxygen-free copper, with beautiful appearance and compact structure.

Production:



1. Brief Description

The performance of 35kV

oil-immersed power transformer

of the company conforms to or is superior to the requirements of GB1094 Power Transformers and GB/T6451 Specification and Technical Requirements for Three-phase Oil Immersed Power Transformers. Its core is made of high-grade superior cold-rolled silicon steel sheet, and the coil conductor adopts high-quality oxygen-free copper, with beautiful appearance and compact structure.



2. Application Scope

The product applies to power, petrochemical, coal, building material, metallurgical and textile industries.



3. Model Description

4. Standards

GB1094.1, GB1094.2, GB1094.3, GB1094.5

IEC 60076-1:2000, IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006,

GB/T 6451, etc



5. Normal Service Conditions

Height above sea level: Not greater than 1,000m;

Ambient temperature: Maximum temperature: +40ºC;

Maximum daily average temperature: +30ºC;

Maximum annual average temperature: +20ºC;

Minimum outdoor temperature: -25ºC;

Installation environment: ground acceleration caused by earthquake: ag<2m/s



6. Features

1. The product adopts four-stage stepping joint, thus greatly reducing the gap reluctance of joint, improving the magnetic property of whole core and lowering the core noise caused by magnetostriction.

2. The winding adopts the oil guiding structure, thus improving the heat dissipation effect of winding and increasing the overload capability of transformer.

3. The product adopts reliable and solid positioning, thus ensuring no displacement of transformer after long-distance transportation and long-time operation and no deformation of winding, and the product may be directly connected to the grid to be used, not suspending the core.

4. The core and clamp may be led out from separate bushing and grounded according to user's habits and requirements.

5. The sealing elements adopt formed parts, achieving good sealing effects.

6. The product features stable performance, high reliability, compact structure, beautiful appearance, energy-saving and consumption reduction.



Company Profile:



Yuebian 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, Yuebian Electric has now become one of the major suppliers of Chinese state grid and southern power grid.

Yuebian electric is located in Yueqing City, Zhejiang Province. As the forefront of reform and opening up, Yueqing provides us convenient traffic conditions. Our Industrial park covers an area of 20000 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, Yuebian 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.



If you are interested in our products, feel free to contact me!



Contact Information:

Name: Rayzen He(Mr.)

Mobile: +86 13506557391



Yuebian Electric Co., Ltd.

Add: Jiedai Industrial Zone,

Yueqing City,

Guangdong Province,

China

Web: www.zjyb-electric.com

Tel: 86-577-62566535

Fax: 86-577-62513338

Zip Code: 325600



Yuebian Electric Co.,Ltd, is one of professional china power transformer manufacturers. We provide Dry Type Transformer, Mini Substation, electrical distribution transformer, oil immersed transformer and so on. Want to know more? Please contact us.

High Overload Oil-Immersed Amorphous Alloy Transformer

High Overload Oil-Immersed Amorphous Alloy Transformer



High-overload Oil-immersed Transformer



1. Brief Description

The seasonal variation, personal mobility, and the difference of power consumption of residents at different time periods of day and night lead to big load fluctuation of power distribution network of China, the capacity of distribution transformer doesn't match the power demands, the specific transformers of general enterprises run at no load or at light load in over 70% of the time, and the common transformers of residents run at no load or at light load in over 80% of the time, resulting in high loss of transformer.



To address such situation, the Company develops the high-overload oil-immersed transformer. The insulating material of this new transformer reaches the standard of insulation class B and higher. On the basis of normal temperature rise requirements, this new transformer satisfies staged continuous operation for 6h at 1.5 multiples of rated capacity (3h respectively at load rising and dropping stages), 3h at 1.75 multiples of rated capacity (1.5h respectively at load rising and dropping stages), and 1h at 2.0 multiples of rated capacity, without affecting the normal service life of transformer. The temperature rise of high-overload distribution transformer satisfies class-F insulation limit value. Meanwhile, according to the core material, this new transformer can be classified into the high-overload oil-immersed transformer with amorphous alloy core and the high-overload oil-immersed transformer with the core made of silicon steel sheet.

2. Application Scope

The product has been widely applied in new and reconstruction projects of urban and rural power grids, and is especially suitable for the areas where the seasonable fluctuation of power consumption is big, the difference of power consumption at day and night is big and the daily maintenance is difficult. As the transformer adopts fully sealed structure and avoids contact with the air, it may run in the humid environment and is the ideal power distribution equipment for urban and rural power distribution network.



3. Model Description

4. Standards:

GB1094.1, GB1094.2, GB1094.3, GB1094.5,

IEC 60076-1:2000, IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006,

GB/T 6451,etc



GB1094.1, GB1094.2, GB1094.3, GB1094.5,

IEC 60076-1:2000, IEC 60076-2:1993, IEC 60076-3:2000, IEC 60076-5:2006,

GB/T 6451, etc



5. Normal Service Conditions

Height above sea level: Not greater than 1,000m;

Ambient temperature: Maximum temperature: +40ºC;

Maximum daily average temperature: +30ºC;

Maximum annual average temperature: +20ºC;

Minimum outdoor temperature: -25ºC;

Installation environment: ground acceleration caused by earthquake: ag<2m/s



6. Features

(1) The product may overload at double the rated capacity for 1h, at 1.75 multiples of rated capacity for 3h and 1.5 multiples of rated capacity for 6h while ensuring normal service life of the transformer.

(2) The low voltage adopts foil winding, thus enhancing the ability of the transformer to withstand the sudden short circuit; as the low voltage adopts copper foil winding, the electric field distribution of transformer is uniform. The low-voltage inner frame adopts formed hard paper tube, while the high-voltage outer half lap is wound with tasteless glass adhesive tape layer by layer. The compression pad adopts the laminated wood, thus enhancing the mechanical strength of the transformer. The transformer uses vacuum oil filling, which may totally eliminate the bubble in the coil, so as to improve the overall ability of the transformer to withstand the sudden short circuit.

(3) The tank rim adopts stainless steel bolts, with beautiful appearance.

(4) The oil tank adopts the fully sealed tank, thus isolating the transformer oil from the air, and slowing down the aging of transformer oil. The sealing elements adopt formed parts, with the sealing reliability of the transformer enhanced.



Company Profile

Yuebian 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, Yuebian Electric has now become one of the major suppliers of Chinese State Grid and southern power grid.



Yuebian electric is located in Yueqing City, Zhejiang Province. As the forefront of reform and opening up, Yueqing provides us convenient traffic conditions. Our Industrial park covers an area of 20000 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, Yuebian 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.



If you are interested in our products, contact us now!



Contact Information:

Name: Rayzen He(Mr.)

Mobile: +86 13506557391

Yuebian Electric Co., Ltd.

Add: Jiedai Industrial Zone, Yueqing City, Guangdong Province, China

Web: www.zjyb-electric.com

Tel: 86-577-62566535

Fax: 86-577-62513338

Zip Code: 325600



Yuebian Electric Co.,Ltd, is a professional dry transformer manufacturer. We provide Dry Type Transformer, Mini Substation, electrical transformer and so on. Want to know more? Please contact us.

Advantages and Disadvantages of Dry Type Distribution Transformer and Oil-immersed Transformer

In price, dry type distribution transformers are more expensive than oil immersed transformers. In terms of capacity, there are more large-capacity oil immersed transformers than dry type distribution transformers. Dry type distribution transformers shall be used in comprehensive buildings (basements, floors, roof, etc.) and crowded places. The oil-immersed transformer is used in independent substation. The box transformer is generally used in the box transformer.





Oil transformer is generally used for outdoor temporary electricity. In the construction, the selection is based on the size of the space. When the space is large, the oil immersed transformer can be selected. When the space is crowded, the dry transformer can be selected. The regional climate is humid and hot, easy to use oil. In the case of dry distribution transformers, forced air cooling equipment must be provided.



The oil immersed transformer is low cost and easy to maintain, but it is flammable and explosive. Dry type distribution transformers can be installed in the load center to reduce voltage loss and power loss due to their good fire resistance. But the dry type distribution transformer price is high, the volume is big, moisture-proof dustproof is bad, and the noise is big.



In terms of output and consumption, the current voltage grade of dry type distribution transformer is only 35kV, and the capacity is smaller than that of oil-immersed transformer, about 2500kVA. Because dry type distribution transformer manufacturing process is relatively the same voltage level with the capacity of the oil transformer to be complex, the cost is also high. So the amount of oil - immersed transformer or more. However, due to the environmental protection of dry type distribution transformer flame retardant, impact resistance and other advantages, and often used for indoor high demand power supply and distribution places, such as hotels, office buildings, high-rise buildings and so on.



Yuebian Electric Co.,Ltd, is a professional dry type transformer supplier. We provide Dry Type Transformer, Mini Substation and so on. Want to know about oil immersed transformer price? Please contact us.

Application Of Single Phase Transformer

Application Of Single Phase Transformer





After the transformation of urban and rural power grid to a certain extent, the share of line loss will be greatly reduced, and the loss of distribution transformer will occupy the main position of network loss. Only when the loss of iron core is greatly reduced can the power loss of the power grid be further reduced. Therefore, the reel core and amorphous core single-phase transformer have great potential for development. At present, the three-phase transformer and the three-phase concentrated power supply system still dominates, and single-phase transformer and the single-phase power supply system is just the supplement. In the practical application of transformer, we should make full use of the advantages and characteristics both of three-phase transformer and single-phase transformer, and choose suitable transformer varieties according to the power load, and configure the power supply with the economic power supply radius.



At present, single-phase transformers are mainly used in residential district electricity consumption, rural lighting or small power consumption, low load density and less load point areas, as well as the residential areas and markets with serious electricity theft. Small industrial users are encouraged to use electricity from the originally integrated transformer to a specific using transformer.



Yuebian Electric Co.,Ltd, is a professional power transformer supplier china. We provide Dry Type Transformer, Mini Substation and so on. Want to know about application of three phase transformer? Please contact us.

Application Of Instrument Transformer

Application Of Instrument Transformer



The wiring of the instrument transformer shall comply with the connection principle: The first winding should be connected in series with the circuit under test while the second winding in series with all the instrument loads.



Select the appropriate ratio according to the measured current size, otherwise the error will increase. At the same time, the secondary end must be grounded to prevent the primary low-voltage side from channeling into the secondary low-voltage side, causing damaging to people and equipment, when the insulator breaks.



The secondary side is absolutely not allowed to be open, because once the circuit is open, the primary current will transform into magnetized current, causing the sudden increase of M and E2, resulting in excessive saturation and magnetization of the core which may heat severely and burn the coils. When the current transformer works normally, the secondary side is used to connect in series with the current coils, such as measuring instruments and relays. The impedance of the current coil is very small, making the secondary side close to short-circuit.



The installation site of the protection equipment for current transformer shall be the vacancies uncovered by the main protection equipment.



In order to prevent the busbar fault caused by the flashover of the pillar-type current transformer, the current transformers are usually stalled on the outlet of circuit breakers or the side of the transformers.



To reduce the damage of the internal failure of generators, the current transformer used to automatically adjust the excitation device shall be placed on the outlet side of the stator winding of generators. And the current transformer for the measuring instrument should be installed on the neutral point of a generator in order to facilitate the analysis on finding the internal faults before the generator incorporates into the system.



Yuebian Electric Co.,Ltd, is a professional china transformer supplier. We provide Dry Type Transformer, Mini Substation, step down transformer and so on. Want to know more? Please contact us.

Application Of Core Type Transformer

Application Of Core Type Transformer



Core type transformer: the power transformer is divided into core structure and shell structure according to the structure of iron core, and the core of core structure is surrounded by winding.



The structure features of three phase core transformer are that the three phase magnetic circuit is connected together. The magnetic circuit of each phase is used as its own circuit with the other two phase magnetic circuit.



Compared with shell type transformer, it has the advantages of low consumption materials, low price, small occupation area and simple maintenance. Therefore, it is widely used. But in large-capacity giant transformers, three-phase group transformers are often used in order to facilitate transportation and reduce spare capacity.



The core type transformer uses this advantage to be used for high voltage power transformer. For example, the 12 pulse wave rectifying device composed of three-phase five-pillar rectifying transformer is a good case. With core type's high reliability, sufficient power supply capacity, sufficient development space, less investment and low operation cost, the power plant upgrading and upgrading of core transformer are provided for chemical plants. The efficiency of electricity consumption is improved and the cost is effectively reduced.



Yuebian Electric Co.,Ltd, is a professional oil immersed transformer manufacturer. We provide Dry Type Transformer, Mini Substation and so on. Want to know about core type transformer advantages? Please contact us.