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Analysis of Transformer Protection in Relay Protection

The transformer is a static device in continuous operation, which is relatively reliable in operation and has less chance of failure. However, since most of the transformers are installed outdoors, and are affected by the load during operation and the short-circuit fault of the power system, various faults and abnormal situations inevitably occur during operation.

December 02, 2022
Working principle and basic knowledge of transformer

1. What are the consequences of different connection groups for parallel operation of transformers?Answer: When transformers of different connection groups are operated in parallel, the secondary circuit will generate voltage difference due to different secondary side voltages of transformers Δ U2, because the total phase difference in transformer connection is a multiple of 30 ° Δ The value of U2 is large. If the phase angle difference of the secondary side of the parallel transformer is 30 °, Δ The U2 value is 51.76% of the rated voltage. If the short-circuit voltage Uk of the transformer is 5.5%, the equalizing current can reach 4.7 times of the rated current, which may burn the transformer.A large phase difference produces a large equalizing current, which is not allowed. Therefore, transformers of different groups cannot operate in parallel.

October 27, 2022
Differences and advantages and disadvantages of dry-type transformers and oil-immersed transformers

During construction, dry transformer and oil transformer can be selected according to the space. Oil transformer can be selected when the space is large, and dry transformer can be selected when the space is crowded.

May 04, 2022
Do you know what are the common faults of transformers?

1. Winding failureThere are mainly inter-turn short circuit, winding grounding, phase-to-phase short circuit, wire breakage and joint welding. The reasons for these failures are as follows:① During manufacture or maintenance, local insulation is damaged, leaving defects;② Due to poor heat dissipation or long-term overload during operation, sundries fall into the windings, causing the temperature to be too high and the insulation to age;③ The manufacturing process is poor, the pressing is not tight, the mechanical strength cannot withstand short-circuit impact, and the winding is deformed and the insulation is damaged.

September 15, 2022
What impact might the Russian-Ukrainian conflict have on the motor industry? Supplier

Russian President Vladimir Putin signed an order on the evening of the 21st to recognize the "Donetsk People's Republic" and "Luhansk People's Republic" in eastern Ukraine. On the 24th local time, Russian President Vladimir Putin said in an emergency televised speech that he had decided to conduct a special military operation in the Donbas region.

March 07, 2022
Power Transformer Equipment PrecisionCut / High speed spacer slitting line Ready to Ship- Made by Canwin China

High speed spacer slitting lineSwing Cut To length line

November 16, 2021
Discussion on short-circuit current breaking capacity of low-voltage side circuit breakers of distribution transformers

The short-circuit current breaking capacity of the low-voltage side circuit breaker of the distribution transformer is too small; the influence of the thermal stability current of the cable is not verified in the low-voltage distribution system, which leads to the small cross-sectional area of some distribution circuit cables in the low-voltage distribution system.

September 13, 2022
Intro to CANWIN The third-generation transformer core processing center was put into production as planned Canwin

CANWIN The third-generation transformer core processing center was put into production as planned, and 10 sets of finished machines will be gradually put into the market!The third-generation machine adopts the mode of one shear and four punches, that is, the swing shear is used as the main shearing machine, which can cut angles of 45 degrees, 90 degrees, and 135 degrees, and can switch the angle during high-speed shearing;Four punches refer to two sets of V-shaped punches that can move laterally, and two sets of O-shaped punches that can move laterally and longitudinally at the same time. Action synthesis, one action is complete!The silicon steel sheet limit track of the third-generation machine adopts open track design, and the limit bearing adopts ceramic bearing, which is more convenient to clean and use;In addition, the third-generation machine also adopts the magnetic belt tension feeder uniquely designed by CANWIN, which is even better in details!

October 07, 2022
Transformer Core Intelligent Manufacturing Industry Chain Service New Model

At present, all countries in the world generally adopt the transformer core shearing distribution mode, which is also a relatively advanced industrial chain service mode that my country has been paying attention to and learning from. In recent years, with the development of my country's intelligent manufacturing technology, the progress of transformer core intelligent manufacturing technology and the outbreak of new coronary pneumonia have further promoted this progress.

September 16, 2022
What is the main power transformer factory look like

This video showed you what a main power transformer look like.

April 13, 2022
Canwin Wish You A Happy New Year 2022!

Driven by scientific and technological innovation, Keying Electric leads the power transformer field into the deep water area of high quality, intelligent and large-scale manufacturing.

January 03, 2022
A paper to explain the modeling and characteristic analysis of transformers

IntroductiontransformerA device that changes voltage, current, or phase by coupling a magnetic circuitWhy learn Transformers?Transformers are also known as stationary AC motors

April 27, 2022

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Contact Sales at Ms. Flora Lu
MOBILE:+86 1370-228-2846
TEL: （+86）750-887-3161
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Jiangmen,GD,China 529700
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