SF6 Gas Circuit Breaker

Sulphur hexafluoride (SF6) is a good gas insulator. Its typical application is gas insulation in high-voltage switchgear of power supply systems. When the sulphur hexafluoride gas encounters high heat and high temperatures(e.g. arc), it produces hydrogen fluoride and sulphur dioxide gases, which coexist with undecomposed sulphur hexafluoride gases. The rated pressure of the SF6 high voltage circuit breaker is usually 0. 0.6 MPa(table pressure). The pressure of the SF6 gas must be checked against the temperature curve of the product when inflating or checking the temperature curve. FLN36-12kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions: open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.

Newly developed load break switch, applied on SF6 RMU. With features of high efficiency, safety, reliability, simple structure, flexible operation, interlock reliable, easy to install and so on. It satisfies with standard IEC94, GB3804, GB16926 and so on. The FL(R)N36 Indoor AC High Voltage SF6 Load Break Switch and LBS-Fuse Combination are designed for use in three-phase AC 50/60Hz RMUs (Ring Main Units) and terminal power stations. These switches are suitable for protecting power systems operating at 10kV, 24kV, and 35kV under on-load conditions. They are capable of interrupting on-load current, closed-loop current, no-load transformer capacity, and cable charging current. When equipped with a fuse combination, they can cut off any current within the range of the rated short-circuit breaking current. These devices find application in RMUs and combined transformers, among others.

The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. Twith 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.Description

The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. Twith 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.Description FLN36-12D/FLRN36-12D type indoor AC high voltage SF6 load break switch is suitable for three-phase 50Hz ring network or terminal power supply and industrial electrical equipment, for protecting the line of 10kV Electric Power Load Control System.

FLN36-24D load break switch use SF6 gas as arc extinguishing and insulating medium. There are three work stations: opening, closing and grounding in the switch. It has small volume, installing easy-to -use, strong environmental adaptabiliy and other characterist. FLN36-12(24)D/630-20 Indoor AC High Voltage SF6 Load Break Switch and FLRN36-12(24)D/100-31.5 Indoor AC High Voltage SF6 Load Break Switch-Fuse Combination are used for the three-phase AC 50/60Hz RMU and terminal power station. The switches are suitable for protecting the 10kV, 24kV and 35kV power systems in load situations. The switch can switch off the on-load current, closed loop current, no-load transformer capacity and cable charging current. The switch with fuse combination can cut off any current when the current is in the range of the rated short-circuit breaking current. They are suitable for the RMU, combined transformer, etc.

FLN36-40.5D/T630 indoor sulfur hexafluoride (SF6) load switch and FLN36-40.5DR/125 load switch fuse combination are suitable for power stations and industrial electrical equipment with three-phase AC 50/60Hz ring network or terminal power supply. They are used as load control line protection for power systems. The load switch divides and closes load current, closed-loop current, no-load transformer and cable charging current; Combination electrical appliances can break any current under rated short-circuit current and are suitable for electrical complete sets of equipment such as ring main units and box type substations. FLN36-40.5 load break switch and FLN -40.5D load break switch plus fuse combination, can be used to protect  and control the electric equipments for power supply and transformer substations, which is especially suitable  for ring net cabinet, cable branch cabinet and distribution switching substation.

FLN48-12 load break switch use SF6 gas as arc extinguishing and insulating medium. There are three work stations: opening, closing and grounding in the switch. It has small volume, installing easy-to -use, strong environmental adaptabiliy and other characterist.. It is also for the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network and its performance indicators meet the national standard GB/T3804-2017 "3.6kV-40.5kV high-voltage AC load switch", which is the main switching element of the ring main unit.

The LW8(A)-40.5 outdoor AC SF6 Circuit Breaker is a three-phase, 50Hz outdoor high-voltage electrical device designed for use in power systems with a rated voltage of 40.5 kV. LW8-40.5, LW8A-40.5 series sulfur hexafluoride circuit breakers are three-phase AC 50Hz outdoor high-voltage electrical equipment,suitable for the control and protection of 40.5kV transmission and distribution system, can also be used for connection circuit breakers and open and close capacitor Banks. The product can be used with CT14 spring mechanism. The circuit breaker conforms to the national standard GB1984 -- 1989 AC high-voltage circuit breaker and the international electrotechnical commission standard IEC56, IEC6220-100 high-voltage ac circuit breaker. The product has excellent breaking performance, USES the pressure air type arc extinguishing chamber, the electric life is long, does not replace the sulfur hexafluoride gas, the mechanical reliability is high, the mechanical life is long, can operate frequently; Each set can be equipped with 6-12 current transformers for user's choice. This product adopts the new MKZ model SF6 pointer density meter, the pressure gauge reading is not affected by the temperature change, easy to use.

LW-126 type outdoor high voltage alternating current sulfur hexafluoride circuit breaker (hereinafter referred to as the circuit breaker) is a kind of outdoor high-voltage switchgear equipment with three poles AC SOHzand it adopts SF6 gas as arc extinguishing and insulation medium. It can be used for the separation and combination of rated current and fault current, capacitor bank, and switching circuit, and it can also be used as aninterconnecting breaker so as to realize the control and protection of transmission lines and equipment, especially suitable for frequent operation.The circuit breaker is equipped with CT20 type spring operation mechanism.This circuit breaker complies with the requirements of IEC 62271-100. Lw36-126 3150-40 self-energized Ac high-voltage sulfur hexafluoride circuit breaker is an outdoor product, suitable for altitudes not exceeding 2,ooo meters (products can be designed for altitudes above 3,ooo meters), and the ambient temperature is not lower than -40°c. In the Ac 50Hz power grid with a maximum voltage of 126KV in areas with a pollution level no higher than Level Iv, it is used to cut off rated current, fault current or conversion lines to achieve power control.For system control and protection, it can also be used as a contact circuit breaker This product uses sF6 gas as arc extinguishing and insulating medium, adopts the most advanced self-energy arc extinguishing technology in the world, and is equipped with a new spring operating mechanism. It has the characteristics of long electrical life, low operating power, low noise, and high reliability., with its simple structure, small size and long maintenance cycle, it can completely replace the same type of imported products in the current process of oil-free and large-capacity power equipment.