China SM Series Insulators Factory: Reliable Medium & Low Voltage Insulators from Trusted Suppliers

The SM series medium and low voltage insulators are expertly crafted by leading suppliers in China, known for their cylindrical ends and spindle-shaped middle section. These insulators are the most frequently used components in the traditional static electrical industry, ensuring reliability and performance, With a height ranging from 20 to 76 mm and a diameter from 17 to 50 mm, these insulators can handle operating voltages between 800 and 4000 V. One of their key performance metrics is the torque value, which varies based on size, with installation torque values between 3 to 30 N·m, Manufactured from unsaturated resin materials, these insulators offer high and stable insulation resistance values, exceeding 23000 MΩ at a voltage of 1000 V. This ensures they maintain exceptional insulation performance across various environmental conditions. Trust the expertise of a reputable factory in China for your insulator needs

Product Details

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