Company News

• 2025-11-11
  

  Suspension Fittings Guide: Functions, Types, Selection

  Suspension Fittings are a category of fittings used in overhead transmission lines for suspending and securing conductors (or optical cables). Typically located on the vertical upper section of towers, they connect the conductor to the insulator string, undertaking the tasks of transferring vertical loads from the conductor, fixing the conductor, and working in conjunction with anti-vibration/damping systems to suppress wind-induced vibrations and galloping.

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• 2025-10-23
  

  What Are Tension Fittings, Suspension Fittings, and Splicing Fittings?

  Tension fittings are used for anchoring and bearing loads, suspension fittings for supporting and vibration reduction, and splicing fittings for connection and conductivity; selecting the right type of these three fittings not only ensures the mechanical safety of the power line but also enhances its electrical performance and service life.

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• 2025-10-11
  

  How to Identify the Quality of Glass Insulators?

  To evaluate the quality of a glass insulator, focus on appearance, electrical strength, mechanical load, thermal stability, manufacturing process, and certification. A high-quality toughened glass insulator should have: Smooth, defect-free glass surface. High mechanical and electrical strength. Excellent thermal stability and self-indicating behavior. Compliance with international standards and certified reports. Premium glass insulators significantly extend service life, reduce maintenance costs, and ensure reliable power grid operation.

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• 2025-09-24
  

  What is Thermal Shock Testing?

  Thermal Shock Testing is a durability test that checks whether glass insulators can resist sudden temperature variations without cracking or losing performance. It's a critical step in quality assurance for high-voltage insulators used in outdoor environments.

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• 2025-09-22
  

  What Are The Detailed Inspection Steps for Glass Insulators?

  The inspection of glass insulators is a lifecycle quality control process crucial at every stage—from arrival and installation to operation. Strict inspection is a vital cornerstone for ensuring the safety, stability, and reliability of the power grid. All inspection work must strictly adhere to the latest national and industry standards, as well as safety management regulations.

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• 2025-08-06
  

  Why Do Only High-voltage Insulators Need Corona Rings?

  low-voltage systems do not generate a sufficiently strong electric field to ionize the surrounding air. The electrical potential is simply not high enough to overcome the dielectric strength of the air. Consequently, corona discharge is not a concern for low-voltage insulators, and therefore, corona rings are an unnecessary component. Manufacturers generally recommend their use on transmission lines operating at 230 kV and above, and they are a standard feature on insulators for even higher voltages.

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• 2025-08-05
  

  How to Understand Corona Rings & Glass Insulators？

  The reliable and safe delivery of power hinges on the performance of crucial components like glass insulators and corona rings. glass insulators provide the necessary electrical separation, while corona rings protect these insulators from a destructive phenomenon known as corona discharge.

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• 2025-08-05
  

  How NOOA Uphold Our Commitment to Product Quality with Insulators

  At NOOA Electric, quality is not just a standard—it’s our commitment. In the high-voltage power transmission industry, insulators must perform reliably under extreme mechanical and environmental conditions. This article outlines how NOOA ensures superior product quality through strict raw material selection, advanced manufacturing processes, comprehensive testing, and continuous team training. Discover how we build durability and trust into every insulator we produce.

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• 2025-08-01
  

  How Insulators Are Used in Transmission Lines?

  Insulators are vital for safe and efficient high-voltage power transmission. They prevent current leakage and support conductors mechanically. Common materials include porcelain, glass, and composites, with glass insulators preferred for their strength, visibility of damage, and low maintenance—especially when RTV-coated. Proper selection and installation ensure reliability even in harsh environments.

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• 2025-07-31
  

  How We Protect Glass Insulators During Long-Distance Shipping

  At NOOA Electric, ensuring product safety during transit is just as critical as maintaining manufacturing quality, especially for international shipments. This article outlines our comprehensive measures to safeguard glass insulators during long-distance freight, covering everything from packaging and moisture control to loading procedures and documentation.

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• 2025-07-30
  

  Why Do We Blast Glass Insulators with High-Pressure Water?

  Electrical insulators are critical in overhead power transmission systems, serving to prevent electric current from leaking from power lines to grounded structures like towers or poles. As these insulators operate under high voltage and are exposed to pollutants such as industrial dust, bird droppings, and coastal salt, regular cleaning is essential.

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• 2025-07-25
  

  How Glass Insulators Composite & Porcelain Insulators are Manufactured?

  Do You Know How Glass Insulators Composite & Porcelain Insulators are Manufactured? Nooa Elecrtic Will Tell You: Glass insulators are made by melting raw materials like lime and quartz at high temperatures, then rapidly cooling them in a mold. Composite insulators consist of a core rod, housing, and end fittings, often using fiberglass-reinforced polymer (FRP) and silicone rubber. Porcelain insulators are produced by mixing raw materials like quartz, feldspar, and clay into a slurry, shaping it, drying it, and then firing it in a kiln.

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