Steatite Heavy Duty Suspension Insulators
| Item# | Figure No. | Leakage Length | Diameter | Average Ultimate Strength | Weight | |
|---|---|---|---|---|---|---|
| INS1752 | 1 | 12 in | 8 in | 1-1/4 in | 4500 lb | 2-1/2 lb |
| INS1753 | 1 | 16 in | 12 in | 1-1/4 in | 4500 lb | 3 lb |
| INS1754 | 1 | 20 in | 16 in | 1-1/4 in | 4500 lb | 3-3/8 lb |
| INS1755 | 1 | 24 in | 20 in | 1-1/4 in | 4500 lb | 3-3/4 lb |
| INS12746 | 1 | 28 in | 24 in | 1-1/4 in | 4500 lb | 4-1/8 lb |
| INS13107 | 2 | 18-5/16 in | 12 in | 1-1/2 in | 7000 lb | 7-1/2 lb |
| INS1756 | 3 | 13 in | 8 in | 1-3/4 in | 9000 lb | 5-5/8 lb |
| INS1757 | 3 | 17 in | 12 in | 1-3/4 in | 9000 lb | 6-1/2 lb |
| INS1758 | 3 | 21 in | 16 in | 1-3/4 in | 9000 lb | 7-1/8 lb |
| INS1759 | 3 | 25 in | 20 in | 1-3/4 in | 9000 lb | 8-1/8 lb |
| INS21330 | 4 | 19-9/16 in | 15 in | 1-3/4 in | 9000 lb | 7 lb |
| INS13541 | 4 | 27-3/16 in | 20 in | 2-3/8 in | 9000 lb | 18 lb |
| Item# | Figure No. | Leakage Length | Diameter | Average Ultimate Strength | Weight |
LSP Heavy Duty Suspension Insulators are used for applications in which large mechanical loads are encountered on high voltage antenna assemblies. They provide a long insulating path between the metal fittings to protect against electrical leakage and flashover. A wide range of sizes and strengths are available in this type of insulator with greater strengths and leakage lengths attainable by combining insulators into assemblies. The ceramic is available in white or brown glaze.
Metal end caps can be supplied as either single or double loop in manganese, silicon, aluminum bronze, anodized aluminum, or galvanized malleable iron.
Applications
Steatite Heavy Duty Suspension Insulators, manufactured by LSP Industrial Ceramics, are engineered for high-voltage antenna assemblies where large mechanical loads are encountered. These insulators, made from steatite (magnesium silicate), offer exceptional dielectric strength, high mechanical resilience, and thermal stability up to 1000°C, making them ideal for demanding industrial environments. Available in white or brown glaze with customizable metal end caps (manganese, silicon, aluminum bronze, anodized aluminum, or galvanized malleable iron), they provide long insulating paths to prevent electrical leakage and flashover. Their design allows for assembly combinations to achieve greater strengths and leakage lengths, ensuring reliability in high-stress applications.
In the telecommunications industry, steatite suspension insulators are critical for high-voltage antenna assemblies, supporting heavy cables and equipment while insulating against electrical currents. Their high dielectric strength and resistance to environmental stressors like moisture and temperature fluctuations ensure stable performance in outdoor settings, such as radio towers and satellite communication systems. The insulators’ ability to handle large mechanical loads makes them suitable for supporting heavy antenna components, while their glazed surfaces (with optional convolutions for added creep leakage protection) enhance durability in harsh conditions, reducing maintenance costs and downtime.
In power generation and distribution, these insulators are used in high-voltage transmission lines and substation equipment to support and insulate conductive components under significant mechanical and electrical stress. Their corrosion resistance and low thermal conductivity make them ideal for environments with extreme temperatures or chemical exposure, such as in coastal or industrial plants. LSP’s precision manufacturing, with tolerances as tight as 0.0005 inches, ensures reliable integration into complex systems, supporting busbars and other heavy electrical components. This versatility and robustness make steatite suspension insulators a cornerstone in ensuring safe and efficient power infrastructure.