Insulator

HDPE Cable Spacer

Silverstone supplies HDPE cable spacers and pin-type insulators for overhead distribution networks. High-density polyethylene construction keeps units light, UV-resistant and shatterproof — a practical alternative to porcelain for 33kV class spacer applications and 15–35kV pin-type installations. Sourced from qualified manufacturers with routine test reports on every batch.

Key Specifications

Product class	HDPE cable spacer · HDPE pin-type insulator
Voltage class	33 kV class spacer (30 kV line-to-line rated) · 15F / 25F / 35F pin types
Material	High-density polyethylene (HDPE)
Unit spacing H	463 mm (spacer) · 133 – 181 mm (pin types)
Nominal diameter D	125 mm (spacer) · 140 – 190 mm (pin types)
Nominal creepage distance	533 mm (spacer) · 317 – 533 mm (pin types)
Ultimate / cantilever strength	14.5 kN (spacer) · 13 kN cantilever (pin types)
Critical dry impulse flashover	145.6 kV POS · 218.6 kV NEG (spacer)
Low frequency withstand	50 kV wet /10 s · 70 kV dry /1 min (spacer)
Power frequency flashover	90.1 kV wet · 100.8 kV dry (spacer)
Net weight per unit	1.2 kg (spacer) · 0.6 – 1.2 kg (pin types)
Reference standard	Export units to IEC standards or project specification
Sourcing base	Suzhou Industrial Park, Jiangsu, China

Typical configurations shown. Final ratings, dimensions and test reports are confirmed per project datasheet — include your specification with the inquiry. Download brochure (PDF) →

Typical Applications

Overhead distribution linesBundled conductor spacingRural electrificationPole-mounted pin insulationCoastal & high-humidity networks

Frequently Asked Questions

What information do you need to quote HDPE cable spacers?

System voltage, conductor type and diameter, number of conductors in the bundle, quantity and destination port. With these, we return a priced offer with lead time within 24 hours on working days.

Which voltage class do your HDPE spacers cover?

The standard HDPE cable spacer is rated for 33kV class overhead lines (30 kV line-to-line), with 533 mm creepage distance and 14.5 kN ultimate strength. HDPE pin-type insulators in 15F, 25F and 35F classes are available for lower distribution voltages.

Do you support OEM branding on HDPE insulators?

Yes. OEM marking, custom colours, packaging and documentation packages are available for bidding agents and EPC contractors as part of our supply service.

Are test reports available with each shipment?

Each batch ships with routine electrical and mechanical test reports covering flashover and low-frequency withstand values. Type test certificates are available on request.