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26 12,2024
What's the Significance of the Protection Ratings of Transformer Enclosures?
Complete guide to transformer enclosure IP ratings - understand digit meanings, safety implications, and how to choose the right protection level for different environments.
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25 12,2024
How Many Types of Overvoltages Can a Transformer in Operation Suffer?
How Many Types of Overvoltages Can a Transformer in Operation Suffer? During the operation of the power system, transformers are threatened by various overvoltages. If these overvoltage situations are not prevented and dealt with, they may ...
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21 12,2024
What Is the Electrical Safety Distance of Transformers?
Comprehensive guide to transformer electrical safety distances - covering voltage level requirements, ventilation needs, and special operational considerations for safe power system design.
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31 07,2024
What are the Chemical Composition and Properties of Cold-Rolled Silicon Steel Sheets?
Cold-rolled silicon steel sheets are specialized silicon alloy steels engineered for transformer cores, motors, and generators. With 3%-5% silicon content, these sheets deliver high magnetic permeability, low iron loss, and superior resistivity—critical for energy-efficient power equipment. Key properties include reduced eddy current loss (thanks to silicon-enhanced resistivity), excellent mechanical strength, and insulation coatings. Lushan, a leading transformer manufacturer since 1975, utilizes premium cold-rolled silicon steel in products like three-phase transformers, DC inductors, and epoxy resin high-voltage transformers.
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31 07,2024
What sealing structure should be adopted for oil-immersed transformers?
What sealing structure should be adopted for oil-immersed transformers? Oil-immersed transformers play a crucial role in power systems, with their sealing performance directly impacting the operational reliability and lifespan of the transformers. The...
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30 07,2024
What kind of sealing material should be chosen for oil-immersed transformers?
Selecting the right sealing material for oil-immersed transformers is critical for durability and leak prevention. Ideal materials like nitrile rubber compounds (grades 58-421, 8143-20, B-9)withstand extreme conditions: transformer oil exposure, pressure up to 0.5 MPa, and temperatures from -45°C to 115°C. Modern nitrile rubber outperforms older materials with lower permanent deformation (50% vs. 66–85%) and broader temperature tolerance (-59°C to 120°C). Lushan Transformers—a 49-year expert in power transformers and reactors—uses these advanced seals in products like three-phase transformers, epoxy resin HV transformers, and filtering reactors.
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27 07,2024
How is the understanding of withstand voltage and test voltage?
Transformers and choke coils face dangerous transient overvoltages from power switching (8-10× normal voltage) and lightning strikes (up to 3000V). This guide explains why withstand voltage tests apply 2× working voltage +500V (for
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19 07,2024
How does wind speed affect the operation of transformers?
How does wind speed affect the operation of transformers? Typically, the maximum wind speed at a certain distance above the ground is specified over a specific period. For example, at a height of 10 meters above the ground, the wind speed reaches 35 m...
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17 07,2024
What are the inspection tasks for dry-type transformers?
What are the inspection tasks for dry-type transformers? Check for abnormal sounds and vibrations. Look for signs of local overheating, such as insulation surface tracking and discoloration caused by harmful gas corrosion and carbonization. Ve...
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23 04,2024
How to analyze and dissect three-phase transformers?
How to analyze and dissectthree-phasetransformers? A transformer is a device that transforms AC voltage, current, and impedance. When an AC current flows through the primary coil, an alternating magnetic flux is generated in the core (or magnetic core...
