Henan Zhongbian Electric Co., Ltd.

Henan Zhongbian Electric Co., Ltd. is a provincial high-tech enterprise that develops and manufactures power transformers and distribution equipment. The company is located in Ye County, a famous city in the Central Plains with beautiful scenery and a long history. Covering an area of 30000 square meters, it is a key new high-tech enterprise approved by the Science and Technology Commission of Henan Province. The company has 260 employees, including 89 technicians, 37 with senior professional titles, and more than 80% of the employees have intermediate professional titles and college or techni

Products

SZ11(13) 35kV on-load tap changer low-loss transformer

The performance of SZ11(13) 35kV on-load tap changer low-loss transformer produced by our company can meet the standards of Power Transformer (GBI094.1) and Technical Parameters and Requirements of Three-phase Oil-immersed Power Transformer (GB/ T6451). The iron core is made of the excellent cold-rolled silicon-steel sheet. The coil is made of the excellent oxygen-free copper. It has a beautiful appearance and is applied to industrial and agricultural power grids in urban and rural areas.

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S13-M energy-saving fully-sealed oil-immersed transformer

The iron core of S13 energy-saving fully-sealed oil-immersed transformer is made of a whole piece of excellent high-magnetic induction cold-rolled crystal orientation silicon-steel sheet in the way of 45° joint lamination. compared with the S11 transformer, its no-load loss decreases by more than 30%, no-load excitation current decreases by more than 50%, and the noise level decreases by more than 10dB. This series of products featuring excellent performance, low running noise level and a compact structure are a new generation of environment-friendly and energy-saving products that are applicable to transformation of urban and rural as well as industrial and mining enterprises' power grid as well as compact preassembled box-type substation transformers.

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S11-M.RL and S13-M.RL stereoscopic triangle coiled iron core transformers

Instead of the traditional plane structure, S11-M.RL and S13-M.RL stereoscopic triangle coiled iron core transformers adopts a three-phase symmetrical vertical structure. Three phases of iron core circuits of the product are completely symmetrical, which significantly reduces the magnetic reluctance as well as the excitation current and the no-load loss. This is an energy-saving transformer that uses traditional materials but has a lower running noise level and more compact structure. The excellent performance of such products in energy conservation, consumption reduction, material saving and environment protection totally conforms to China's energy saving policy.

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S11(13) 10KV low-loss oil-immersed transformer

Iron core: it is made of excellent cold-rolled crystal orientation silicon-steel sheet and adopts the fully-mitred hole-free binding structure. The iron core is in the multistage stepped shape and has three joints or five joints. Wound with a special device, the coiled iron core features low no-load loss and a low noise level, no joint and corner weight, low magnetic reluctance and low no-load loss. Amorphous alloy transformer core adopts excellent materials. Compared with traditional silicon-steel sheet, its no-load loss decreases by 72% and no-load current decreases by 50% on average.

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S(B)H15-M amorphous alloy oil-immersed transformer

Amorphous alloy is a new type of energy-saving material that adopts the quick condensation manufacturing process. In the amorphous alloy, metal atoms are arranged in the disordered and amorphous way. Its crystal structure is totally different from that of the silicon steel, so it can be magnetized and demagnetized better. Its iron core sheet is extremely thin (0.025mm), which is less than 1/10 of the silicon-steel sheet. Featuring high saturation magnetic induction, low loss, low excitation current and good temperature stability, this new type of material is used for manufacturing the transformer iron core. The iron core adopts the single-box or three-phase five-column wound iron core. The iron core is clamped with thin plates or a molded frame structure. The high and low voltage coils are of a rectangular structure. The amorphous alloy transformer characterized by low no-load loss, strong anti-short circuit capability, an advanced structure, energy conservation and outstanding environmental protection performance conforms to the industry policy advocated by the Chinese government, i.e. "saving resources, protecting the environment and constructing economical society". It is a distribution transformer with a relatively ideal energy-saving effect at present.

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SCBH15 amorphous alloy dry-type transformer

The amorphous alloy dry-type transformer adopts the iron core made of amorphous alloy strips that can significantly reduce the no-load and load loss. Its no-load loss decreases by 75% compared with the ordinary dry-type transformer, and its load loss decreases by 15% compared with the ordinary dry-type transformer. Due to its low loss, little heat and low temperature rise, the amorphous alloy dry-type transformer can run very stably. It can be widely applied to fields where the power load fluctuation is large, such as highways, urban infrastructure and residential communities. Featuring a significant energy-saving effect, it can save a lot of investment of power plants and reduce consumption of power generation fuels, so as to reduce air pollution. This is an excellent energy-saving and environment-friendly dry-type transformer in the contemporary era.

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SCB-RL stereoscopic triangle coiled iron core dry-type transformer

This series of transformer is produced with the foreign excellent stereoscopic coiled iron core transformer manufacturing technology, the domestic polygonal section iron core technology as well as our company's coil winding equipment and tooling devices. The main performance indexes of this product is superior to the domestic standard. It is applicable to environments where there are high requirements for fire protection, such as high-rise residences, airports, stations, wharfs, subways, hospitals, power plants, metallurgical industry, shopping centers, dense residential areas as well as petroleum chemical industry, power plants, nuclear submarines, etc.

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KS general mining oil-immersed power transformer

KS general mining oil-immersed power transformer is applicable to the central substation in the underground coal mine, parking lot at the bottom of the mine, master air inlet duct or major air inlet duct, the places with the mash gas but without the explosion danger as well as damp environments like tunnels.

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KBSG mining flameproof dry-type transformer

This series of products are applicable to severe environments where there are high requirements for fire protection and the load fluctuation is large and also dirty and damp environments, such as airports, power plants, metallurgical operation, hospitals, high-rise residences, shopping centers, dense residential areas as well as petroleum chemical industry, power plants, nuclear submarines, etc.

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D12-M.R-10~160 single-phase pole-mounted transformer

The structure of the single-phase coiled iron core pole-mounted distribution transformer is relatively reasonable. Its loss is decreased significantly. Single-phase transformation can occur in the very center of load, which lowers wire loss, improves the power supply reliability. It is widely applied to urban and rural distribution grid and residential communities to achieve outstanding economic and social benefits.

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News

What kinds of tests should be carried out for transformers in operation?

In order to ensure the normal operation of the transformer, the following tests shall be carried out frequently:;

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How to select transformer? How to determine the reasonable capacity of transformer?

First, investigate the power supply voltage of the power consumption place, the actual power load of the user and the local conditions, and then select one by one with reference to the technical data marked on the transformer nameplate. Generally, the transformer capacity, voltage, current and environmental conditions should be considered comprehensively. The capacity selection should determine the required load according to the capacity, nature and service time of the user's electrical equipment, so as to select the transformer capacity.

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What is the nameplate of the transformer? What are the main technical data on the nameplate?

The nameplate of the transformer indicates the performance, technical specifications and application occasions of the transformer, which is used to meet the user's selection. The main technical data for selection are:

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What are the losses of transformers in operation? How to reduce losses?

(1) It is caused by the iron core. When the coil is energized, the magnetic lines of force are alternating, causing eddy current and hysteresis loss in the iron core. This loss is collectively called iron loss.

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What is the voltage change rate of a transformer?

The voltage change rate of voltage regulator is one of the main performance indexes of transformer. When the transformer supplies power to the load, the voltage at the load end of the transformer will inevitably decrease. Compare the decreased voltage value with the rated voltage value, and take the percentage as the voltage change rate, which can be expressed by the formula; Voltage change rate=[(secondary rated voltage load terminal voltage)/secondary rated voltage] × 100%。 Generally, when the power transformer is connected to the rated load, the voltage change rate is 4-6%.

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How is the voltage regulator regulated?

The structure of the voltage regulator is the same as that of the autotransformer, except that the iron core is wound on the ring iron core as a ring coil. A sliding brush contact is used for the tap of the secondary coil to make the contact slip along the loop of the coil surface to achieve smooth voltage regulation.

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What are the components of the transformer?

Transformer components are mainly composed of iron core and coil, as well as oil tank, conservator, insulating sleeve and tapping head.

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What are the types of transformer designs?

There are single-phase and three-phase transformers according to the number of phases. It is divided into power transformer, special power transformer, voltage regulating transformer, measuring transformer (voltage transformer, current transformer) and small power transformer (for small power equipment) according to the purpose. It is divided into core type and shell type according to the structure. The coil has two windings and multiple windings, and the autotransformer is divided into oil immersed type and air cooled type according to the cooling mode.

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How does a transformer change voltage?

The transformer is made of electromagnetic induction. It consists of an iron core laminated with silicon steel sheets (or silicon steel sheets) and two groups of coils wound on the iron core. The iron core and coils are insulated from each other without any electrical connection

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