Silverstone composite insulators — long-rod suspension, line post and electrified-railway types — combine an FRP core rod, polymer weather sheds and crimped metal end fittings in a lightweight, vandal-resistant package. Quality-assured supply from qualified manufacturers, from distribution voltages up to 750 kV AC and ±500 kV DC, delivered with routine test reports.
Key Specifications
Product class
Composite (polymer) insulator — suspension · line post · railway
Typical configurations shown. Final ratings, dimensions and test reports are confirmed per project datasheet — include your specification with the inquiry.
Overhead transmission linesDistribution networksElectrified railwaySubstationsPhase-to-phase spacersPolluted & coastal areas
Frequently Asked Questions
What information do you need to quote a composite insulator?
System voltage, insulator type (suspension long-rod, line post or railway), specified mechanical load (SML), end fitting or coupling, creepage requirement or site pollution level, quantity and destination port. With these, we return a priced offer with lead time within 24 hours on working days.
Which standards do your composite insulators follow?
Suspension and line post designs are quoted to ANSI C29.11. Project-specific IEC requirements can be accommodated by our manufacturing partners — include the applicable standard in your inquiry.
Do you support OEM or private-label supply?
Yes. OEM branding is a core part of our supply service — custom markings, packaging and documentation packages are available for bidding agents and EPC contractors.
Which test documents ship with the insulators?
Each lot ships with routine mechanical and electrical test reports (proof load, power-frequency flashover). Type test certificates for specific designs are available on request.
