Dependable Medium and Low Voltage SEP Series Insulators - China Suppliers and Factory for Power Networks
SEP Series Insulators introduction
The SEP series electrical insulators fall into the category of medium - and low - voltage insulators. The upper and lower ends are designed as cylinders, while the middle part features a hexagonal prism. The hexagonal prism has six flat and corresponding planes, which provide excellent support for using a clamping wrench during the assembly process. When operators use a clamping wrench to install or remove the busbar insulators, the wrench can precisely fit onto the planes of the hexagonal prism, creating a stable and strong point of force. This design not only significantly improves the assembly efficiency and reduces the workload of operators but also ensures the accuracy and reliability of the installation process. Operators can easily control the installation force and angle, enabling the insulators to be installed accurately in the designated positions, laying a solid foundation for the stable operation of the subsequent electrical systems.
In terms of size specifications, the SEP series low-medium voltage insulators cover a relatively wide range. Their height generally ranges from 16 to 80 mm, and the diameter ranges from 15 to 65 mm. This diverse size design is intended to meet the needs of different customers and various application scenarios. For some electrical equipment with limited space, smaller - sized insulators can perform their insulating function within the confined space. In contrast, for some large - scale electrical systems, larger - sized insulators can provide stronger support and better insulation performance. The different combinations of height and diameter allow the SEP series insulators to flexibly adapt to various complex electrical environments, demonstrating their strong versatility and adaptability.
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 | SEP series(SEP-type hexagonal support insulators) |
| Product height | 16-80mm |
| Product diameter | 15-65mm |
| Thread | M4-M12 |
| 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) | 600-3200V |
| Working voltage (DC) | 800-4500V |
| 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 |
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Product certification
UL, CE, ROHS, REACH, IATF16949, ISO9001, ISO14001, PSCR

UL

CE

IATF16949

ISO9001

ISO14001

PSCR

ROHS

REACH
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Product application cas
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Frequently Asked Questions
What are the dimensions available for the SEP series insulators?
The SEP series low-medium voltage insulators generally feature a height range of 16 to 80 mm and a diameter range of 15 to 65 mm. Thread specifications range from M4 to M12.
What materials are used in manufacturing SEP series insulators?
The raw material used is unsaturated resin (BMC/DMC), and the insert materials can be customized using brass or steel according to customer requirements.
What are the electrical properties and working voltages of these support insulators?
The operating voltage for AC ranges from 600V to 3200V, while the working voltage for DC ranges from 800V to 4500V. They have a flame retardant grade of UL94 V0 (3mm).
What certifications do the SEP series insulators comply with?
They meet ROHS 2.0 environmental requirements and hold certifications including CE, REACH, ELV, SGS, UL, IATF16949, ISO9001, ISO14001, and PSCR.
What is the advantage of the hexagonal prism design in the middle of the insulator?
The hexagonal prism provides six flat corresponding planes that perfectly fit clamping wrenches. This enables stable assembly and removal, improves installation efficiency, and ensures precise installation force control.
What is the Minimum Order Quantity (MOQ) and operating temperature range?
The Minimum Order Quantity is 100 pieces, and they are designed to operate reliably within a working temperature range of -40°C to 140°C.





