Guy strain insulator FZSW

• IEC 61466, IEC 61109, IEC 61952, ANSI C29.13 <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>• Special corrosion-resistant high strength fiberglass<br>• Unique vacuumizing method-Bubble Free vulcanization<br>• High hydrophobicity and tracking resistance of the silicone rubber<br>• Line post insulator, Line suspension insulator, Railway polymer insulator<br><br>Polymer Line Post Insulator is a composite electrical insulator designed to support and electrically isolate overhead conductors in medium- and high-voltage distribution and transmission systems. It uses a fiberglass-reinforced polymer core with a silicone rubber housing and is mounted directly on poles or crossarms to provide mechanical support and insulation.<br><br>Compared with traditional porcelain line post insulators, polymer types offer lighter weight, superior pollution performance, and improved resistance to mechanical impact.<br><br>Main Functions<br>·Electrical Insulation: Prevents current leakage from energized conductors to poles, towers, or grounded structures.<br>·Mechanical Support: Supports overhead conductors and withstands vertical, horizontal, and cantilever loads.<br>·Line Stability: Maintains conductor position and required electrical clearances.<br>·Environmental Protection: Provides reliable insulation under rain, pollution, UV exposure, and harsh outdoor conditions.<br><br>Typical Applications<br>·Medium-voltage distribution lines<br>·Overhead power networks<br>·Compact distribution systems<br>·Urban power distribution<br>·Industrial power networks<br>·Renewable energy collection systems<br>·Railway electrification networks<br>·Pole-mounted switchgear installations<br><br>Typical Technical Specifications<br>·Rated Voltage: 11 kV – 230 kV<br>·Application Voltage: Medium and high voltage systems<br>·Insulation Material: Silicone rubber composite polymer<br>·Core Material: Fiberglass reinforced epoxy rod<br>·Installation: Outdoor<br>·Mounting Type: Pole / Crossarm mounted<br>·Frequency: 50 Hz / 60 Hz<br>·Mechanical Strength: Cantilever load rated<br>·Pollution Performance: High<br><br>Construction<br>A typical polymer line post insulator consists of:<br>1. Fiberglass Reinforced Polymer (FRP) Core Rod<br>·Provides mechanical strength<br>·Supports conductor loads<br>·Resistant to bending and tensile stress<br>2. Silicone Rubber Housing<br>·Provides external insulation<br>·Excellent hydrophobic performance<br>·Resistant to UV radiation<br>·Maintains insulation performance in polluted environments<br>3. Silicone Rubber Sheds<br>·Increase creepage distance<br>·Improve pollution resistance<br>·Reduce leakage current<br>4. Metal End Fittings<br>·Galvanized steel or aluminum alloy<br>·Used for conductor and structure mounting<br>·Designed for mechanical loading<br><br>Operating Principle<br>During normal operation:<br>·The energized conductor is mounted on the top fitting.<br>·The polymer insulator provides insulation between the conductor and the supporting structure.<br>·Leakage current remains extremely low.<br><br>Under abnormal conditions:<br>·The insulator withstands temporary overvoltage.<br>·The FRP core provides mechanical stability during wind, ice, and conductor movement.<br>·The silicone rubber housing prevents flashover caused by contamination and moisture.<br><br>Advantages<br>·Lightweight compared with porcelain designs<br>·Excellent hydrophobic properties<br>·Superior pollution resistance<br>·High mechanical strength-to-weight ratio<br>·Better impact resistance<br>·Reduced transportation and installation costs<br>·Good seismic performance<br>·Low maintenance requirement<br>·Suitable for coastal and industrial environments<br><br>Common Types<br>1. Distribution Class Polymer Line Post Insulator<br>·Used in 11 kV–36 kV networks<br>·Pole-mounted distribution applications<br>2. Transmission Class Polymer Line Post Insulator<br>·Used in higher voltage overhead lines<br>·Provides conductor support and insulation<br>3. Horizontal Line Post Insulator<br>·Mounted horizontally on poles or structures<br>·Common in compact distribution systems<br>4. Vertical Line Post Insulator<br>·Mounted vertically<br>·Used for standard overhead conductor support<br><br>Applicable Standards<br>·IEC 61952 – Insulators for overhead lines – Composite line post insulators<br>·IEC 61109 – Composite insulators for AC overhead lines<br>·ANSI C29.17 – Composite Line Post Insulators<br>·IEC 60815 – Selection and dimensioning of high-voltage insulators for polluted conditions<br><br>Typical Voltage Applications<br>·11–36 kV Distribution poles and compact networks<br>·66–110 kV Sub-transmission lines<br>·132–230 kV High-voltage overhead line applications<br><br>Typical Applications by Industry<br>·Electric Utilities: Overhead distribution networks<br>·Renewable Energy: Wind and solar collection lines<br>·Industrial Plants: Private distribution systems<br>·Railways: Electrification support systems<br>·Mining: Outdoor power distribution<br>·Infrastructure: Urban and rural electrical networks<br><br>Key Features<br>·Silicone rubber composite construction<br>·High mechanical strength with low weight<br>·Excellent pollution and moisture resistance<br>·Long creepage distance design<br>·UV-resistant outdoor performance<br>·Low leakage current<br>·Easy installation and replacement<br>·Maintenance-free operation<br>·Suitable for modern overhead distribution systems<br>·Compliant with IEC 61952, IEC 61109, and ANSI C29.17 standards<br>