Guy strain insulator LXHY

• IEC60383, IEC 60305, ANSI C29.2B<br>• ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA<br>• Seismic design, ETGI-1.020, IEEE Std 693, NCh2369<br>• Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1<br>• High altitude correction per IEC & IEEE, ~ 5000m<br>• High quality toughened glass for Superior mechanical, electrical and safety performance<br>• Optional to High-performance RTV Coating for heavy pollution area<br>• Galvanization & zinc sleeves prevent corrosion of metal fittings<br>• Standard Profile, Fog Type Profile, Open Type Profile, HVAC/HVDC<br><br>Glass Disc Insulator, also known as a Toughened Glass Suspension Insulator or Glass Cap-and-Pin Insulator, is a high-voltage insulator used for overhead transmission and distribution lines to electrically isolate conductors from towers and support structures while withstanding mechanical tensile loads.<br><br>It is manufactured from toughened (tempered) glass, combined with metal cap-and-pin fittings, and is commonly assembled into insulator strings for medium-, high-, and extra-high-voltage transmission systems.<br><br>Main Functions<br>·Electrical Insulation: Prevents current flow between energized conductors and grounded transmission structures.<br>·Mechanical Support: Supports overhead conductors and withstands conductor weight, wind loads, and tension forces.<br>·Voltage Distribution: Provides insulation over long transmission distances through multiple disc units.<br>·Fault Identification: Glass failure is visually detectable because damaged discs shatter completely.<br><br>Typical Applications<br>·High-voltage overhead transmission lines<br>·Extra-high-voltage (EHV) transmission systems<br>·Suspension towers<br>·Tension/dead-end towers<br>·Distribution networks<br>·Railway electrification systems<br>·Utility power transmission corridors<br><br>Typical Technical Specifications<br>·Rated Voltage: 11 kV – 1000 kV+<br>·Insulator Type: Suspension disc type<br>·Material : Toughened glass<br>·Insulation Structure: Cap-and-pin<br>·Installation: Outdoor<br>·Mechanical Strength: 40 kN – 530 kN+<br>·Frequency: 50 Hz / 60 Hz<br>·Mounting: String assembly<br>·Pollution Performance: According to creepage distance design<br><br>Construction<br>A typical glass disc insulator consists of:<br>1. Toughened Glass Disc Body<br>·Provides electrical insulation<br>·High dielectric strength<br>·Transparent structure allows visual inspection<br>·Designed to withstand mechanical and thermal stresses<br>2. Metal Cap<br>·Usually galvanized steel<br>·Connects the upper part of the insulator string<br>·Provides mechanical connection between units<br>3. Metal Pin<br>·Connects the lower part of the insulator unit<br>·Transfers mechanical tensile load<br>4. Cement Joint<br>·Bonds glass body with metal fittings<br>·Ensures mechanical stability<br>5. Protective Glaze Surface<br>·Improves weather resistance<br>·Reduces contamination adhesion<br><br>Operating Principle<br>During normal operation:<br>·The glass disc provides insulation between the conductor and tower.<br>·Multiple discs are connected in series to withstand the required system voltage.<br>·The mechanical load is carried through the cap-and-pin assembly.<br><br>During abnormal conditions:<br>·The insulator withstands lightning impulses and switching overvoltages.<br>·If a glass unit fails, the glass body shatters while the metal fittings remain attached, allowing easy detection and replacement.<br><br>Advantages<br>·Excellent electrical insulation performance<br>·Easy visual inspection of damaged units<br>·High mechanical strength<br>·Long service life<br>·Stable electrical characteristics<br>·Good resistance to aging<br>·Self-identifying failure mode<br>·Suitable for very high voltage transmission lines<br>·High resistance to temperature variations<br><br>Common Types<br>1. Standard Suspension Glass Disc Insulator<br>·Used for normal transmission applications<br>·Installed as vertical suspension strings<br>2. Anti-Pollution Glass Disc Insulator<br>·Increased creepage distance<br>·Used in coastal and industrial polluted areas<br>3. High Mechanical Strength Glass Disc Insulator<br>·Designed for heavy conductor loading<br>·Used in long-span transmission lines<br>4. Tension Glass Disc Insulator<br>·Used for angle towers and dead-end applications<br><br>Typical Voltage Applications<br>·11–33 kV Short suspension strings<br>·66–132 kV Multiple disc strings<br>·220 kV Approximately 12–16 discs<br>·330–500 kV Longer suspension strings<br>·765–1000 kV Extra-long EHV/UHV strings<br><br>Applicable Standards<br>·IEC 60383 – Insulators for overhead lines with nominal voltage above 1000 V<br>·IEC 60305 – Insulators for overhead lines – Ceramic or glass insulator units for AC systems<br>·IEC 61109 – Composite insulators for AC overhead lines<br>·ANSI C29.2 – Wet-Process Porcelain and Toughened Glass Suspension Insulators<br><br>Typical Applications by Industry<br>·Electric Utilities: Transmission line insulation<br>·Renewable Energy: Grid connection transmission lines<br>·Railway Systems : Overhead electrification<br>·Industrial Utilities : Private high-voltage networks<br>·Power Transmission Operators: EHV/UHV overhead lines<br><br>Key Features<br>·Toughened glass insulation body<br>·Cap-and-pin suspension design<br>·High mechanical tensile strength<br>·Excellent electrical insulation performance<br>·Visible failure indication<br>·Suitable for high-voltage and extra-high-voltage systems<br>·Long service life with low maintenance<br>·Widely used in global transmission networks<br>·Compliant with IEC 60305 and IEC 60383 standards<br>