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13 01,2025
The meaning of the transformer noise indicator LAP
Understand transformer noise indicators (LAP) and their importance in measuring dB levels for power and distribution transformers to ensure proper noise control standards.
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03 01,2025
Why does the transformer core must be slightly ground？
Learn why transformer cores must be slightly grounded to reduce eddy currents, prevent noise, and improve electrical safety in power and distribution transformers.
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02 01,2025
What things should pay attention to when making the core assembly and maintenance?
Essential guide to transformer core assembly and maintenance - covering stacking methods, cooling channel setup, inspection protocols, and repair best practices from industry experts.
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31 12,2024
Phase sequence problem of transformer in parallel operation
Essential guide to phase sequence requirements for parallel transformer operation - learn detection methods, risks of phase mismatch, and professional safeguards from industry experts.
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27 12,2024
What are the Normal Operating Conditions for Dry-type Transformers?
Complete guide to normal operating conditions for dry-type transformers - covering altitude limits, temperature ranges, installation environments, and power quality requirements.
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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?
Explains the main types of transformer overvoltages: lightning strikes, switching surges and temporary overvoltages that affect power systems.
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31 07,2024
What are the Chemical Composition and Properties of Cold-Rolled Silicon Steel Sheets?
Analyzes chemical composition and magnetic properties of cold-rolled silicon steel sheets used in transformer and reactor cores
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31 07,2024
What sealing structure should be adopted for oil-immersed transformers?
Explores effective sealing methods for oil-immersed transformers including gasket, welding and flange techniques to prevent oil leakage
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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.
