Medium voltage power distribution and complete sets of products
20/10KV vacuum circuit breaker
Low-voltage and medium-voltage circuit breakers provide overheating, overload, and short-circuit protection for lines in residential, commercial, industrial, and hazardous area credits.
Core function
Adopting an advanced vacuum interrupter design, it features strong arc-quenching capability and is maintenance-free;
Adopt the mature APG potting process to ensure that it is not affected by harsh environments;
The design fully considers users and is compatible with mainstream medium-voltage switchgear, greatly reducing costs;
All products have passed the standard cabinet pushing test before leaving the factory to ensure their interchangeability and universality:
Before leaving the factory, they all undergo hundreds of mechanical running-in tests to ensure the stability of their performance:
Adopt a mature spring operating mechanism with stable performance, strong anti-corrosion ability and long service life:
Passed the type tests such as electrical endurance E2 level, mechanical endurance M2 level and capacitive current switching low re-strike probability C2 level according to GB1984-2003.
40.5KV indoor SF6 circuit breaker
40.5KV series vacuum circuit breaker is an indoor vacuum circuit breaker using solid insulating medium, providing reliable control and protection functions for power transmission and distribution systems.
Core function
Adopting an advanced vacuum interrupter chamber design provides good performance for high-current and high-breaking capacity；
It has excellent solid-sealed insulation performance, which can ensure its stable operation in harsh environments；
Adopt a highly compatible design approach and be compatible with mainstream cabinet models at home and abroad；
Provide rich design schemes and accessory solutions to meet customized needs；
Equipped with a mature spring energy storage operating mechanism, greatly prolonging the mechanical life；
Modular design, multi-purpose, reasonable and compact structure；
Passed GB1984 national standard and DLT403 industry standard certification.
LW8-35 circuit breaker
It has independently developed the LW8-35 outdoor high-voltage SF6 circuit breaker, which has won the Third Prize of the National Science and Technology Progress Award, and its domestic market share has been ranking first for many years. This product adopts a self-energy arc extinguishing structure of "thermal expansion + assisted blowing" and is equipped with a CT14 spring mechanism. It features a short arcing time, excellent interrupting performance, and a long electrical life. Up to now, more than 20,000 units of this product have been in operation in power grids at all levels across the country.
LW30-126 porcelain column circuit breaker
The product is suitable for switching capacitor banks in 750kV or 550kV substations. It employs a self-energizing arc-quenching principle, offering excellent breaking performance, short arcing time, and long electrical life. SF6 gas is used as the insulating and arc-quenching medium, eliminating the risk of combustion or explosion, making it suitable for densely populated areas. The circuit breaker is equipped with a spring-operated mechanism, which is structurally simple, compact, and highly reliable.
LW30-252 porcelain column circuit breaker
The LW30-252 high-voltage AC SF6 porcelain post circuit breaker is an outdoor high-voltage switching device for three-phase AC with a frequency of 50Hz. It is suitable for the control and protection of the 252kV power transmission and transformation system, and can also be used as a tie circuit breaker. This type of circuit breaker can be equipped with a CTY-10 hydraulic spring mechanism to achieve three-phase mechanical linkage, or it can be equipped with an improved CT26 spring mechanism to achieve three-phase separate operation
GW4-126 high-voltage AC disconnector
This product is a double-column horizontal rotary disconnector with an external pressure contact finger structure and is equipped with a JW7-126(W)/J50 grounding switch. This type of product is the horizontal fracture disconnector with the largest domestic usage. It is suitable for use as an incoming and outgoing line disconnector. Since this model of disconnector does not occupy upper space after separation, it is easy to form various layout methods such as inclined layout, high-type layout, and single-pole installation
GW6A-252 high-voltage AC disconnector
The GW6A-252 high-voltage AC isolating switch has a single-column double-arm vertical telescopic structure, featuring an attractive appearance. It is mainly used as a busbar isolating switch, playing the roles of installation isolation and line conversion. The conductive transmission part of this type of product adopts a fully sealed design, which has strong resistance to wind and sand. It has excellent electrical and mechanical properties, as well as good corrosion resistance and seismic resistance. It has been widely put into operation in 252kV substations across the country.
KYN61-40.5 medium voltage metal-enclosed load interrupter switchgear
This product is a metal-enclosed withdrawable switchgear, featuring comprehensive design schemes, independent compartments, reliable interlocking mechanisms, and high technical parameters. It meets the requirements for arc resistance up to 31.5kA/1s and seismic resistance at Level 9. Widely used in power transmission for small and medium-sized generators, power distribution for industrial and mining enterprises, as well as power reception, transmission, and starting of large high-voltage motors in secondary substations of power systems, it is designed for control, protection, and monitoring applications. Additionally, it can be applied to intelligent substations, photovoltaic power generation, and wind power generation projects.
KYN28A-12kV AC metal-enclosed switchgear
This product is a metal-enclosed withdrawable switchgear, featuring comprehensive design schemes, independent compartments, reliable interlocking mechanisms, and high technical parameters. It meets the requirements for arc resistance up to 31.5kA/1s and seismic resistance at Level 9. Widely used in power transmission for small and medium-sized generators, power distribution for industrial and mining enterprises, as well as power reception, transmission, and starting of large high-voltage motors in secondary substations of power systems, it is designed for control, protection, and monitoring applications. Additionally, it can be applied to intelligent substations, photovoltaic power generation, and wind power generation projects.
SF6 gas insulated ring main unit
The SF6 gas-insulated ring main unit (RMU) is a fully insulated, hermetically sealed, and compact ring main unit. This product uses SF6 gas as the insulating medium, effectively protecting against harsh external environmental conditions. With its excellent performance, it is widely applied in power grid systems ranging from 12 to 40.5 kV.
Core function
Safe operation and reliable operation
Have logical mechanical and electrical interlocking functions to effectively prevent misoperation.；
The operation of completely closing the door can be realized to ensure safety；
Adopt a perfect grounding system design to ensure zero potential at the contact interface；
Adopt a sealed compartment design to effectively avoid live operation.
Flexible design and deep customization.
Modular design allows customization through the free combination of module units；
The design fully considers the cable installation space requirements, and the installation is simple and convenient设；
The rated voltage can be customized as 12 kV/24 kV/40.5 kV according to demand.
Quality assurance and stable operation
The annual gas leakage rate is less than 0.05%, which can ensure stable operation within a service life cycle of more than 30 year;
The protection level of the main cabinet reaches up to IP67. When combined with shielded cable accessories, it can effectively resist immersion in floods, ensuring stable operation in harsh outdoor environments
Certified by GB and IEC standards
Non-separated phase busway
The non-phase-separated busway is a component of the busbar conductor, which has related connections, joints and insulating supports integrated within a single enclosure. This solution is designed for circuits that require higher reliability than power cords.
Core features
- Compared with cable solutions, installation costs are reduced and reliability is improved through a simplified design
- Precisely adapt for the first time through Feiling's final on-site adaptation plan.
- Maximize electrical conductivity by using silver or tin-plated designs on all joint surfaces · In conjunction with Feiling switchgear
- Adopt a durable baked epoxy powder coating to minimize the risk of problems in harsh environments