Flyaford
Direct Factory Supply for Low-to-Medium Voltage Busbar Systems, Electrical Switchgear, and Distribution Cabinets.
Understanding the dielectric, mechanical, and thermal parameters shaping global electrification infrastructure.
Sheet Molding Compound (SMC) represents the pinnacle of thermosetting composite technology for heavy electrical engineering. Composed of unsaturated polyester or vinyl ester resin reinforced with chopped glass fibers (typically 25% to 30% content by weight) and inorganic fillers such as alumina trihydrate (ATH), SMC delivers extraordinary mechanical flexural strength exceeding 180 MPa. Unlike standard thermoplastics, SMC undergoes irreversible chemical cross-linking under heat and high compression molding pressure, ensuring zero thermal deformation even at continuous operation temperatures exceeding 155°C (Class F rating).
Bulk Molding Compound (BMC) and Dough Molding Compound (DMC) utilize short-strand glass reinforcements dispersed in a dense polymer paste. Designed specifically for high-cavity compression molding and transfer molding processes, BMC exhibits exceptional isotropic properties and dimensional stability. With a low linear shrinkage coefficient (<0.1%), BMC allows for high-precision embedded brass and steel insert positioning, making it the ideal choice for standoff busbar insulators, T-type bus supports, and compact switchgear components requiring mechanical torque resistance up to 500 N.m.
Modern power distribution networks demand uncompromising fire safety standards. SMC and BMC standoff insulators engineered by Zhejiang Flyaford Electron Co., Ltd. integrate optimized halogen-free flame retardant systems. Under UL 94 vertical burning tests, our material formulations achieve UL 94-V0 compliance with zero flaming drops. Furthermore, high alumina trihydrate loading provides superior arc resistance (exceeding 180 seconds according to ASTM D495) and maximum tracking resistance (CTI > 600V according to IEC 60112), preventing catastrophic dielectric breakdown during transient overvoltage spikes.
| Material / Physical Parameter | SMC (Sheet Molding Compound) | BMC / DMC (Bulk Molding Compound) | Standard Phenolic (PF Resin) | Engineering Thermoplastic (PA66-GF30) |
|---|---|---|---|---|
| Dielectric Strength (kV/mm) | 18 - 25 kV/mm | 15 - 22 kV/mm | 10 - 14 kV/mm | 12 - 16 kV/mm |
| Comparative Tracking Index (CTI) | CTI 600 (PLC 0) | CTI 600 (PLC 0) | CTI 175 (PLC 3) | CTI 400 (PLC 1) |
| Flexural Strength (ISO 178) | 160 - 200 MPa | 100 - 140 MPa | 80 - 110 MPa | 130 - 170 MPa |
| Flame Retardancy Rating | UL 94-V0 (Halogen-Free) | UL 94-V0 (Halogen-Free) | UL 94-V1 / V0 | UL 94-HB / V2 |
| Thermal Shock Resistance | -40°C to +140°C Continuous | -40°C to +140°C Continuous | -20°C to +100°C Limit | -30°C to +110°C Limit |
A National High-Tech Enterprise establishing benchmark manufacturing standards in electrical insulation science.
Established in 2007 in the Jinyi New District of Jinhua City, Zhejiang Province, ZHEJIANG FLYAFORD ELECTRON CO., LTD. has grown into a world-class manufacturing hub for low-to-medium voltage electrical insulation components. With an operational plant spanning over 35,000 square meters and a dedicated workforce of over 120 specialized technical personnel, Flyaford operates 60+ state-of-the-art compression molding machines ranging from 100 to 1,000 tons of clamping force.
Our commitment to lean digital manufacturing guarantees automated raw material compounding, precise closed-loop temperature monitoring during thermoset curing, and automated robotic deflashing. This digital infrastructure allows us to easily deliver high-volume orders globally while maintaining a total manufacturing defect rate below 100 PPM (Parts Per Million).
Flyaford is designated as the Jinhua Feifav High-Performance Insulator Science and Technology R&D Center. Recognized officially as a "National High-Tech Enterprise," "Zhejiang Provincial Specialized, Refined, Distinctive, and Innovative SME," and "Zhejiang Provincial Technology-Based SME," our corporate strategy is anchored in rigorous technological innovation.
Our R&D division maintains formal industry-university-research collaborations with premier institutions across Hangzhou, Jinhua, and the prestigious Tsinghua University. As a designated custom insulator developer for Tsinghua University power electronics labs, Flyaford holds 26 proprietary patents, including 5 core invention patents and 2 software copyrights governing automated molding parameter control.





How Zhejiang Flyaford optimizes total cost of ownership (TCO) for Tier-1 power systems equipment OEMs.
Situated in the Yangtze River Delta manufacturing super-cluster, Flyaford maintains direct strategic partnerships with top-tier raw material resin suppliers and glass fiber producers. This proximity guarantees instantaneous raw material availability, mitigating global supply chain disruptions. Furthermore, custom hardware inserts (brass, steel, stainless steel) are machined in-house or sourced from localized precision tooling hubs, ensuring absolute thread tolerance accuracy (ISO 6H / 6g standards) and maximum insert torque pull-out strength.
Time-to-market is critical for modern equipment deployment. Flyaford offers complete turnkey OEM/ODM services from initial CAD mold design to finished part verification. Operating specialized high-precision CNC toolrooms, we reduce custom tooling fabrication times by up to 40% compared to Western European or North American moldmakers. Initial sample prototypes (with complete CMM dimensional reporting) are routinely delivered within 15 to 20 calendar days.
By enforcing the automotive industry's benchmark IATF 16949 quality system alongside ISO 9001 and ISO 14001, Flyaford subjects every production batch to rigorous Statistical Process Control (SPC). Electrical performance testing and visual inspection are conducted under 100% full inspection mode rather than standard sampling, guaranteeing zero out-of-spec insulators enter shipment containers.
To validate material endurance under extreme operational environments, Flyaford’s internal laboratory utilizes a comprehensive suite of advanced testing equipment:
Precision-engineered SMC/BMC insulators serving mission-critical energy, industrial, and transportation networks worldwide.
Resistant to high vibration dynamics, continuous harmonic distortion, and fluctuating humidity levels inside offshore and onshore wind turbine nacelles.
Designed for 1500V DC high-voltage solar utility solar farms, exhibiting high UV resistance, thermal aging immunity, and zero moisture absorption.
Chemical-resistant SMC polymer formulations protected against corrosive atmospheric gases, acid mists, and industrial chemical vapours.
Compact D-series and SM-series standoff insulators optimized for space-saving low-voltage switchboards, busduct risers, and distribution centers.
Providing solid busbar support, maintaining exact phase-to-phase and phase-to-ground creepage clearance under heavy electromagnetic short-circuit stress.
Surge-resistant insulation structures capable of handling high $\text{d}v/\text{d}t$ electrical voltage switching spikes emitted by modern IGBT power converters.
Essential isolation components for utility-scale battery energy storage systems (BESS), ensuring fault isolation and thermal run-away containment.
IATF 16949 certified insulation units for ultra-fast DC charging piles, liquid-cooled power units, and high-voltage vehicle power distribution units (PDUs).
Key market drivers transforming SMC material selection, regulatory frameworks, and smart grid reliability standards.
The global shift towards higher operational voltages in solar photovoltaics and battery storage systems (transitioning from 1000V AC/DC to 1500V DC) demands insulators with vastly increased creepage distances and higher Comparative Tracking Index (CTI 600V) ratings. SMC insulators are rapidly replacing legacy ceramic and low-grade epoxy insulators due to their superior fracture toughness and lower weight.
Global environmental mandates, including EU RoHS 2.0, REACH SVHC, and EcoVadis sustainability benchmarks, strictly restrict brominated flame retardants. Advanced SMC formulations utilize micro-encapsulated Alumina Trihydrate (ATH) and phosphorus-based synergists, delivering zero toxicity emission during thermal combustion without sacrificing UL 94-V0 flammability ratings.
Modern electrical enclosures require compact switchgear footprints. This mandates standoff insulators capable of enduring massive dynamic mechanical loads during momentary short-circuit fault currents (up to 100 kA). Precision compression-molded SMC insulators with embedded knurled metal inserts deliver unmatched cantilever load retention and mechanical stability under high electromagnetic stress.
Partnering with global EPCs, panel builders, and electrical wholesalers with complete technical protection.
Our senior electrical engineers evaluate customer CAD schematics, system voltage levels, short-circuit withstand values, and ambient operating conditions. We provide tailored material recommendations (SMC, BMC, EMC, or PF) to achieve optimal cost-performance equilibrium.
To accelerate design freeze, Flyaford provides rapid evaluation samples for physical fit testing, torque testing, and high-voltage dielectric flashover testing, ensuring total confidence prior to mass production tooling authorization.
Our global engineering service desk responds within 2 hours. We offer remote and on-site troubleshooting for installation torque calibration, busbar alignment, and routine predictive maintenance guidelines for harsh operating environments.
Backed by our strict IATF 16949 quality framework, all products carry full warranty coverage. In the rare event of non-conformance, Flyaford guarantees immediate root-cause analysis (8D reporting) and expedited air-freight replacement shipment at zero customer cost.






Direct technical answers to common procurement, engineering, and compliance inquiries.
SMC (Sheet Molding Compound) uses long chopped glass fibers (25mm+) laid in sheet form, delivering superior flexural and tensile strength, making it ideal for heavy structural supports and high mechanical stress applications. BMC (Bulk Molding Compound) utilizes shorter fibers mixed into a bulk paste, allowing for higher precision molding of complex shapes and intricate metallic insert encapsulations.
CTI measures a material's resistance to electrical tracking (the formation of conductive paths on the surface caused by electrical stress and environmental contamination). A CTI rating of 600V (the maximum PLC 0 category) guarantees that Flyaford SMC insulators can withstand high humidity and dust accumulation without dielectric breakdown or surface arcing.
Zhejiang Flyaford Electron Co., Ltd. holds IATF 16949 (Automotive Quality Management), ISO 9001 (Quality Management), ISO 14001 (Environmental Management), UL certification, CE EU Safety certification, as well as full RoHS 2.0 and REACH environmental material compliance test reports.
Yes, we specialize in OEM/ODM customized production. Our internal engineering department handles mold design, tooling production, insert machining, and customized composite resin blending. We provide 3D CAD drawing confirmation prior to mold making, with initial sample delivery typically completed within 15–20 days.
Our brass and steel hardware inserts feature aggressive deep-knurled dynamic geometry. During thermoset compression molding, the SMC/BMC matrix flows tightly into the knurling grooves. Every product series is batch-tested on a microcomputer torsion testing machine (up to 500 N.m torque capacity) to guarantee torque limits exceed standard IEC/NEMA installation specifications.
Explore our extensive range of SM, MNS, EL, SEP, and Custom D-Type Busbar Insulators.