Industrial Electrical SF6 Ring Main Unit for Highway and for Commercial Building
Product Description
- Industrial Electrical SF6 Ring Main Unit is a high voltage electrical equipment used for power supply and control of power systems.
- The ring main unit adopts SF6 gas as an insulating medium, which can prevent electrical arcs and discharges in the electrical equipment.
- This type of ring main unit adopts a metal enclosed structure, which can prevent external environmental factors from affecting the switch cabinet.
- The ring main unit is equipped with protective equipment, circuit breakers, isolating switches, cable joints, and other components, which can realize the power supply and control of the power system.
- Industrial Electrical SF6 Ring Main Unit is widely used in highway and commercial buildings, such as tunnel lighting, street light control, signal light control, monitoring systems, and so on.
- The design of this ring main unit strictly follows safety standards, with strict safety measures in place during installation, operation, and maintenance.
- Industrial Electrical SF6 Ring Main Unit is an efficient and reliable solution for power systems, suitable for power supply and control of high voltage electrical equipment.
Main Technical Parameters
Main Technical Parameters | Specifications |
Rated voltage | 40.5KV |
Rated frequency | 50Hz |
Rated current of the main busbar | 1250A, 1600A, 2000A |
Rated insulation level 1min power frequency withstand voltage | 95KV between phases and relative, 115KV for the first isolating joint |
Lightning impulse withstand voltage | 185KV between phases and relative, 215KV for the first isolating joint |
1min power frequency withstand voltage of the auxiliary control circuit | 2KV |
Dimensions (widthdepthheight) | 1400*2800(3000)*2800 |
Rated current of branch busbar | 630A, 1250A, 1600A |
Marketing

Our business scope covers 6 continents and over 50 countries
Company Profile

- Chongqing Bosun Electrical Co., Ltd. is located in Banan District, Chongqing, China, established in 1996. The company covers an area of 8,000 square meters and has convenient transportation.
- The company is dedicated to researching and developing, manufacturing, installing, and selling complete sets of high and low voltage switchgear and control equipment, ranging from 40.5kV to 0.22kV.
- The company has received over 20 CCC/CQC certificates, meeting the requirements of the highest protection level of IP65 and altitude environment of 4500 meters. The company has also obtained the GB/T19001:2016/ISO9001:2015 quality management system certification.
- The company has a complete product development department and design team.
- The company utilizes specialized computer mechanical and electrical CAD design software systems for various kinds of product construction and manufacturing design.
- The company has complete surveillance, measuring, and testing equipment to ensure high product quality.
- The company has a complete production line, including CNC processing equipment, welding equipment, hoisting equipment required for cabinet production, busbar bending equipment, tinning equipment, electric tools, and other assembly production equipment required for complete assembly production.
- The company has more than 10 product invention patents and utility model patents.
- The company provides excellent service based on the motto "Quality First, Customer Foremost, Survival Through Quality, Development Through Service, Continuous Improvement."
Design
