Flyaford
Flyaford
High-dielectric BMC/DMC insulators engineered for low-to-medium voltage electrical switchgear, distribution boards, and power enclosures operating across Vietnam's industrial sectors.
Navigating Vietnam's Rapid Industrial Growth, PDP8 Grid Modernization Goals, and Harsh Tropical Microclimates.
Vietnam's manufacturing sector—concentrated across key economic hubs like Binh Duong, Dong Nai, Bac Ninh, and Hai Phong—is experiencing unprecedented power grid expansion. Under Electricity Vietnam's (EVN) National Power Development Plan VIII (PDP8), the country is upgrading low- and medium-voltage distribution grids to accommodate renewable integration and high-density industrial loads.
However, electrical infrastructure in Vietnam faces extreme environmental stress. Tropical monsoon conditions bring annual relative humidity levels exceeding 85–95%, elevated ambient temperatures, and coastal airborne salt spray. Standard porcelain or inferior resin insulators often suffer from surface flashovers, tracking degradation, and moisture-induced dielectric breakdown within sealed switchgear units.
To prevent costly industrial downtime and catastrophic electrical fires, switchgear panel manufacturers (OEMs) and power contractors across Vietnam are replacing traditional insulation with advanced Bulk Molding Compound (BMC) SB Series insulators.
An authoritative analysis of Bulk Molding Compound (BMC) physics, mechanical load capacities, and thermal stability in modern switchgear construction.
The SB Series Insulator family manufactured by Zhejiang Flyaford Electron Co., Ltd. utilizes an advanced formulation of Bulk Molding Compound (BMC)—a thermosetting matrix composed of unsaturated polyester resin, short glass fiber reinforcement (20% to 30% by weight), inorganic mineral fillers (Aluminum Trihydrate - ATH for flame suppression), and specific stabilizers. Unlike thermoplastic materials, thermosets undergo irreversible chemical cross-linking during heat-compression molding at 150°C to 170°C. This molecular architecture ensures zero softening or plastic deformation under continuous operating temperatures up to Class H (180°C).
During electrical fault conditions in low-voltage distribution switchboards, dynamic electromagnetic forces exert severe bending and tensile loads upon support insulators. SB Series insulators (including popular models SB-14, SB-20, SB-25, SB-30, SB-35, SB-40, SB-50, and SB-60) are designed with optimized geometry to evenly distribute mechanical stress. High-grade brass (H59/H62) or zinc-plated steel inserts are molded directly into the composite core with anti-rotation hexagonal knurling, providing exceptionally high pull-out torque and bending resistance.
| Specification Parameter | SB-14 / SB-20 Series | SB-25 / SB-35 Series | SB-40 / SB-60 Series | Test Standard / Compliance |
|---|---|---|---|---|
| Rated Voltage (Un) | Up to 1.1 kV (AC/DC) | 1.1 kV - 3.3 kV | 3.3 kV - 12 kV | IEC 60664-1 / GB/T 14048.1 |
| Tensile Strength (N) | ≥ 1,500 N | ≥ 3,200 N | ≥ 6,500 N | ISO 527-2 / ASTM D638 |
| Bending/Flexural Strength | ≥ 2,500 N | ≥ 5,000 N | ≥ 9,800 N | ISO 178 / Microcomputer Universal Machine |
| Torque Resistance (Nm) | 8 - 15 Nm (M6/M8) | 22 - 35 Nm (M8/M10) | 45 - 85 Nm (M10/M12/M16) | Microcomputer Torsion Tester (0-500N.m) |
| Dielectric Strength | ≥ 18 kV/mm | ≥ 22 kV/mm | ≥ 25 kV/mm | IEC 60243-1 |
| Comparative Tracking Index (CTI) | CTI 600V (Group I) | CTI 600V (Group I) | CTI 600V (Group I) | IEC 60112 / UL 746A |
| Flammability Rating | UL94 V-0 Self-Extinguish | UL94 V-0 Self-Extinguish | UL94 V-0 Self-Extinguish | UL 94 Vertical Burning Test |
| Operating Temperature | -40°C to +140°C | -40°C to +150°C | -40°C to +160°C (Class H) | IEC 60085 Thermal Class Standard |
Over 20 years of specialized focus in low-to-medium voltage electrical insulation, supplying global leaders and key infrastructure projects.
Established 2007 | Jinhua City, Zhejiang Province
Occupying a modern 35,000 m² smart manufacturing facility equipped with over 60 automatic compression molding presses, Flyaford produces upwards of 200,000 insulators daily. Recognized as a National High-Tech Enterprise and a Zhejiang Provincial "Specialized, Refined, Distinctive, and Innovative SME", Flyaford serves as a trusted OEM/ODM partner across Vietnam, Southeast Asia, Europe, and the Americas.
The company holds 26 patents (including 5 invention patents and 2 software copyrights) and operates an accredited in-house Science & Technology R&D Center in collaboration with top academic institutions including Tsinghua University.
To guarantee 100% reliability for critical power infrastructure in Vietnam, Flyaford operates a state-of-the-art testing facility housing full-spectrum physical and electrical diagnosis tools:
Microcomputer Torsion Tester (0-500N.m) & Universal Mechanical Machine (0-200KN) verifying dynamic short-circuit mechanical endurance.
Partial Discharge Room (0-120KV), Lightning Impulse Tester (0-300KV), and Dielectric Withstand Tester (0-100KV).
Double 85 Damp Heat Test Chambers, Thermal Shock Chambers (-40°C to +140°C), and Salt Spray Corrosion Cabinets.
Deploying engineered SB Series standoff insulators in high-value electrical systems throughout Vietnam's growing economy.
In major renewable clusters such as Ninh Thuan and Binh Thuan, offshore wind turbines and utility-scale solar farms experience high salt fog. SB Series insulators support busbars inside step-up transformer cabinets and inverter units without tracking degradation.
Deployed inside main distribution boards (MDBs) and motor control centers (MCCs) in manufacturing plants across Bac Ninh, Binh Duong, and Dong Nai, providing reliable phase-to-phase and phase-to-ground isolation.
As Vietnam expands BESS infrastructure to stabilize peak grid demand, SB Series thermoset insulators maintain structural stability under high DC voltage stress and temperature fluctuations inside lithium battery enclosures.
Seamless supply chain integration for Vietnamese panel builders, OEMs, and electrical EPC contractors.
Flyaford provides complete OEM/ODM engineering customization to match specific Vietnam EVN and international switchgear designs:
With direct ocean freight lanes from Ningbo/Shanghai ports to Hai Phong Port (Northern Industrial Corridor) and Cat Lai Port / Ho Chi Minh City (Southern Industrial Hub), Flyaford delivers short lead times and complete export documentation:
Detailed answers to crucial engineering questions regarding SB Series insulators in tropical power systems.
Explore our full line of BMC/DMC standoff insulators, busbar supports, and low-voltage accessories certified for Vietnam power projects.
Get instant technical datasheets, CAD drawings, factory-direct wholesale pricing, and Form E preferential customs clearance support for Vietnam.