Hot Products
0102
High-Quality SM Series Insulators from China Suppliers and Factory for Enhanced Power Systems
Enhance Power Systems with SM Series Insulators introduction
The SM spindle-shaped insulators are made of high-quality insulating materials, which can effectively prevent current leakage and provide reliable insulation protection for electrical systems. Within the specified operating voltage range, such as around 800 - 4000V, they can ensure that the current flows along the predetermined path, avoiding current leakage and thus guaranteeing the normal operation of electrical equipment and the safety of personnel.
They have a relatively high insulation resistance value and can maintain stable insulation performance under different environmental conditions. Even when exposed to a certain degree of pollution or moisture, they can control the leakage current within a safe range through their own structural and material characteristics.
Optimized electric field distribution. Moreover, the spindle-shaped structural design of the SM series insulators helps to optimize the electrical performance. Compared with the traditional-shaped MNS series insulators, it increases the creepage distance and reduces the risk of discharge.
The SM series insulators also have strong bending and tensile resistance. The spindle-shaped structure gives the insulators better mechanical properties when subjected to bending and tensile forces. It can effectively disperse external forces and avoid stress concentration at a single point, thereby improving the insulators' bending and tensile resistance.
Depending on the size of the product, the installation torque of the SM spindle-shaped insulators ranges from 3 to 30 N·m. Appropriate installation torque can ensure that the insulators are firmly installed on electrical equipment, preventing loosening during operation.
The cylindrical design at both ends facilitates installation and enables precise connection with other components, ensuring the stability and reliability of the installation.
In terms of size specifications, the SM spindle-shaped insulators have a certain standardization. Their height ranges from 20 to 76 mm, and the diameter ranges from 17 to 50 mm. This standardized design gives them good interchangeability in different electrical equipment, facilitating the maintenance and replacement of the equipment.
Low-medium voltage electrical insulators specification
| Product features(Technical Data) | Meet ROHS 2.0 environmental requirements Colors, inserts, materials can be customized according to customer requirements |
| Type | SM series（SM-type support insulators） |
| Product height | 20-76mm |
| Product diameter | 17-50mm |
| Thread | M5-M10 |
| Insert material | brass, steel |
| Raw material | unsaturated resin (BMC/DMC) |
| MOQ | 100 pcs |
| Working temperature | -40-140℃ |
| Flame retardant grade | UL94 V0 (3mm) |
| Hot wire temperature | 960℃ |
| Operating voltage (AC) | 800-3000V |
| Working voltage (DC) | 1100-4200V |
| Test items | low and high temperature test, pressure resistance, torque strength, tension, bending force, pressure, insulation resistance, ROHS, flame retardant |
| Certificates | CE, REACH, ELV, SGS |
| Quality System | ISO9001, ISO14001, IATF16949 |
production workshop
Product certification
UL, CE, ROHS, REACH, IATF16949, ISO9001, ISO14001, PSCR
UL
CE
IATF16949
ISO9001
ISO14001
PSCR
ROHS
REACH
Product packaging
Product application cas
Contact Us
Frequently Asked Questions (FAQ)
What are SM series spindle-shaped insulators primarily used for?
SM series insulators are designed for low-to-medium voltage electrical equipment, effectively preventing current leakage and delivering reliable insulation protection in systems operating around 800 - 4000V.
What operating voltage range do SM series insulators support?
They support an AC operating voltage of 800–3000V and a DC working voltage range of 1100–4200V, making them suitable for a wide range of power distribution applications.
What materials are used to manufacture SM series insulators?
The main body is made from high-quality unsaturated resin (BMC/DMC), while the thread inserts are constructed from durable brass or steel materials.
What mechanical and flame retardant properties do these insulators offer?
SM insulators offer exceptional bending and tensile resistance, a working temperature range of -40°C to 140°C, a UL94 V0 flame retardant rating (3mm), and hot wire resistance up to 960°C.
Can sizes, threads, and colors be customized?
Yes. Standard heights range from 20 to 76mm, diameters from 17 to 50mm, and thread options from M5 to M10. Custom colors, inserts, and materials are available upon customer request.
Which international quality and environmental standards do SM insulators meet?
SM series insulators comply with ROHS 2.0, REACH, CE, ELV, SGS, as well as ISO9001, ISO14001, and IATF16949 quality system certifications.