How to Choose Composite Insulator

By choosing Composite Insulator Technology, excellent performance and reliability can be assured for the lifetime of your equipment:

  • One piece tailored glass fiber composite tube - best mechanical and dielectrically performance
  • High temperature vulcanized (HTV) silicone rubber with high amount of aluminum rehydrate (ATH) filler - improved tracking and erosion performance and best long term performance
  • Seamless helical extrusion process for a continuous outer silicone housing - no mold lines where dirt or salt can accumulate
  • Optimized shed profiles with large shed tip radius and high protective creep age distance - lowest possible leakage currents and electrical field
  • High-strength aluminum end fittings - strong, gas-tight and leak-proof joint

Examples of applications in which our Composite Insulators are used:
  • High voltage circuit breakers (live tank and dead tank)
  • Outdoor instrument transformers (current and voltage)
  • Surge arresters
  • Cable terminations
  • Transformer bushings
  • Wall bushings
  • Gas insulated switchgear (GIS)
  • UHVDC / UHV station post insulators
  • Voltage dividers

Silicone rubber is the fastest-growing, most dominant polymeric insulation material for high voltage products. SINGREE Composite Insulators with silicone rubber offer significant benefits compared to the former porcelain technology:
  • Explosion-proof for maximum safety
  • Non-brittle material with reduced risk of handling damages
  • Leakage current control due to hydrophobicity
  • Excellent insulation for reduced creep age requirements
  • Flashover resistance
  • Outstanding seismic performance provides safety and reliability
  • Low weight for cost savings
  • Maintenance-free and outstanding pollution performance
  • UV stability