Weisho Electric Co., Ltd.
Weisho Electric Co., Ltd.
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FSZW2 Series Power Post Insulator – Reliable Support for High Voltage Switchgear

High-Strength Epoxy Resin Core for Indoor & Outdoor HV Applications

The FSZW2 series power post insulator is a robust, solid-core insulating unit used primarily in 35kV class power equipment, including high-voltage switchgear, isolators, and busbar supports. Made of high-strength epoxy resin with embedded metal inserts, this insulator provides excellent mechanical and dielectric performance in compact substation environments.

Compliant with IEC 60273 and GB/T 10068, FSZW2 insulators are commonly deployed across power plants, utilities, renewable energy projects, and industrial substations in both indoor and outdoor setups.


⚙️ Key Specifications (FSZW2-35kV Example)

ParameterValue
Rated Voltage35kV
Withstand Voltage (PF)≥95kV
Withstand Voltage (Impulse)≥185kV
Creepage Distance≥900 mm
Bending Strength≥12 kN
MaterialEpoxy resin / cast iron
Operating Temperature-40°C to +55°C
Mounting TypeFlange/base bolt
StandardsIEC 60273, GB/T 10068

🛠 Application Scenarios

  • Indoor metal-clad switchgear insulation (11kV–35kV)

  • Outdoor pole-mounted isolator post supports

  • Busbar standoff insulation in compact substations

  • Wind and solar farms require vibration-resistant insulators

  • Replacement for aging ceramic or porcelain post insulators


🌟 Why Choose FSZW2?

  • Solid epoxy insulation with low partial discharge

  • High mechanical strength for stable busbar support

  • Moisture-resistant, UV-stable surface

  • Compact design ideal for space-constrained switchgear

  • Available in custom heights and creepage distances


💬 Verified Feedback from Global Clients


🗣️ Nathan B., Grid Engineer – Energex, Australia
“FSZW2 units are compact, reliable, and haven’t failed once during our 2023 bushfire season.”
📌 Source: Energex Maintenance Report, Q4 2023


🗣️ Ellen C., Systems Designer – Enel Green Power, Italy
“We use FSZW2 insulators in 35kV solar inverter stations. Their epoxy construction handles vibration better than ceramic.”
📌 Source: Enel Equipment Evaluation Brief, 2022


🗣️ Alan S., Substation Manager – Manitoba Hydro, Canada
“In freezing wind and ice, they stay sealed and dry—better than legacy porcelain posts.”
📌 Source: Manitoba HV Asset Reliability Memo, 2023


🗣️ Gary T., Operations Head – Scottish & Southern Electricity Networks
“Compact footprint made switchgear retrofits smooth. Withstands 12kN easily.”
📌 Source: SSEN Project Retrofitting Summary, 2022


🗣️ Amanda L., Project Engineer – Pacific Gas & Electric (PG&E), USA
“Perfect choice for 35kV ring main units. Less weight, same mechanical stability.”
📌 Source: PG&E RMU Design Feedback Roundtable, 2022


❓ FAQs

Is FSZW2 suitable for outdoor use?
Yes, the epoxy surface is UV-resistant and water-sealed for outdoor exposure.

Can I use this on a 33kV isolator?
Absolutely. FSZW2 is rated up to 35kV with ample impulse withstand margins.

Do you provide different mounting types?
Yes. Threaded flange, flat base, and custom inserts are all available.

What’s the lifespan?
Over 25 years in most service conditions with zero maintenance.

Is routine testing required?
Only visual inspection is typically needed. Full type test reports are included on delivery.


📞 Contact the Manufacturer for Quotation or Customization

Thor – Senior Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]

FSZW2 post insulators offer strong, stable, and compact insulation for modern HV systems. Upgrade today for better performance and easier maintenance.

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