Guy strain insulator ZSW

• IEC 60168, IEC 60273, ANSI C29.9<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>• Wet & Isostatic method, Brown or Gray glaze color<br>• High-strength insulating materials Porcelains Alkalinalumino-silicates<br>• Optional: RTV silicone coating for higher resistance to weathering & UV<br><br>Porcelain Station Post Insulator, also known as a Pedestal Insulator or Substation Post Insulator, is a high-voltage electrical insulation component used in outdoor substations and switchyards to support and electrically isolate busbars, disconnectors, circuit breakers, instrument transformers, and other high-voltage equipment from grounded structures.<br><br>It is manufactured from high-strength electrical porcelain and is designed to withstand both electrical stresses and mechanical loading in outdoor power system environments.<br><br>Main Functions<br>·Electrical Insulation: Provides insulation between energized conductors and grounded supporting structures.<br>·Mechanical Support: Supports busbars and high-voltage equipment under normal and short-circuit conditions.<br>·Voltage Isolation: Maintains required insulation distances in substations.<br>·Environmental Protection: Provides reliable operation under outdoor pollution, rain, ice, and temperature variations.<br><br>Typical Applications<br>·Outdoor substations<br>·High-voltage switchyards<br>·Busbar support systems<br>·Disconnect switch supports<br>·Circuit breaker supports<br>·Current transformer and voltage transformer supports<br>·Lightning arrester mounting structures<br>·Power transmission and distribution systems<br><br>Typical Technical Specifications<br>·Rated Voltage: 12 kV – 420 kV<br>·System Voltage Range: Medium to Extra High Voltage<br>·Insulation Material: Electrical porcelain<br>·Installation: Outdoor<br>·Mounting Type: Pedestal / flange mounted<br>·Frequency: 50 Hz / 60 Hz<br>·Insulator Type: Station post type<br>·Mechanical Strength: Cantilever load rated<br>·Environmental Class: Outdoor pollution-resistant<br><br>Construction<br>A typical porcelain station post insulator consists of:<br>1. Porcelain Insulating Body<br>·High dielectric strength<br>·Excellent mechanical strength<br>·Resistant to weather aging<br>·Provides insulation between live parts and earth<br>2. Metal End Fittings<br>·Galvanized steel or aluminum alloy fittings<br>·Used for mounting and equipment connection<br>·Designed to withstand mechanical loads<br>3. Cemented Joint Section<br>·Bonds porcelain sections and metal fittings<br>·Provides mechanical stability<br>4. Mounting Flange<br>·Allows installation on steel structures, equipment frames, or foundations<br><br>Operating Principle<br>During normal operation:<br>·The energized conductor or equipment is mounted on the top of the insulator.<br>·The porcelain body prevents current flow to the grounded structure.<br>·The insulator withstands continuous system voltage.<br><br>During abnormal conditions:<br>·It withstands temporary overvoltages.<br>·It supports mechanical forces caused by short-circuit currents, wind, and equipment operation.<br><br>Advantages<br>·High mechanical strength<br>·Excellent electrical insulation performance<br>·Long service life<br>·Good resistance to environmental aging<br>·Stable performance under temperature variations<br>·Suitable for high-voltage substations<br>·Low maintenance requirements<br>·Proven technology for decades of outdoor service<br><br>Common Types<br>1. Solid Core Station Post Insulator<br>·Single-piece porcelain body<br>·Used for medium-voltage and lower mechanical loads<br>2. Multi-Unit Station Post Insulator<br>·Multiple porcelain sections assembled together<br>·Used for higher voltage levels<br>3. Line Post / Station Post Combination<br>·Used where both conductor support and insulation are required<br>4. High Mechanical Strength Pedestal Insulator<br>·Designed for heavy busbars and switching equipment<br><br>Typical Voltage Applications<br>·12–36 kV Distribution substations and switchgear<br>·66–145 kV Outdoor switchyards and busbar supports<br>·220–245 kV Transmission substations<br>·362–420 kV Extra-high-voltage switchyards<br><br>Applicable Standards<br>·IEC 60168 – Tests on indoor and outdoor post insulators of ceramic material<br>·IEC 60273 – Characteristics of indoor and outdoor post insulators<br>·IEC 62231 – Composite station post insulators for substations<br>·ANSI C29.9 – Wet-Process Porcelain Insulators – Station Post Type<br><br>Typical Applications by Industry<br>·Electric Utilities: Substation busbar and equipment support<br>·Renewable Energy: Collector substations<br>·Industrial Plants: High-voltage switchyards<br>·Mining: Outdoor power substations<br>·Oil & Gas: Electrical distribution facilities<br>·Railways: Traction substations<br><br>Key Features<br>·High-strength porcelain construction<br>·Excellent insulation reliability<br>·High cantilever mechanical capability<br>·Outdoor weather-resistant design<br>·Suitable for busbar and switchgear support<br>·Long operational life<br>·Low maintenance requirement<br>·Designed for medium- and high-voltage substations<br>·Compliant with IEC 60168, IEC 60273, and ANSI C29.9 standards<br>