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Audited Supplier In medium-voltage power distribution systems, the most commonly used ring network cabinets currently include SF6 gas insulated ring network cabinets, solid insulated ring network cabinets and environmentally friendly gas insulated ring network cabinets. However, due to the greenhouse gas emission problem of SF6 and the difficulty of recycling solid insulation materials, the application of SF6 gas insulated ring main unit and solid insulated ring main unit will be limited. With the global promotion of the concept of green and environmentally friendly development, fully insulated environmentally friendly gas ring main units that comply with the latest environmental protection concepts and requirements will usher in historical development opportunities!
IE-EcoAir-24kV-630A series environmentally friendly switches are a new generation of "fluorine-free and low solid waste" green environmentally friendly circuit breaker switches and environmentally friendly gas insulated ring main units developed to replace traditional SF6 gas insulation.
The environmentally friendly circuit breaker switch adopts an integrated high-strength longitudinal beam, and the vacuum arc extinguishing chamber is wrapped in the longitudinal beam structure. It has the advantages of reliable structure and simple debugging. It isolates the opening, closing and grounding operations of the knife switch by an integrated isolation spindle. Driven by the machine, there is no other arm transmission, the working position is more precise, and the operating force of the isolation mechanism is lighter. The main shaft of the circuit breaker is made of epoxy fiberglass trigger rod, which has high mechanical strength and strong insulation performance. Through the alloy bracket and transmission cam, the opening and closing actions of the vacuum arc extinguishing chamber are realized. The phases are reinforced with silicone umbrella skirts to increase the creepage distance. The environmentally friendly circuit breaker switch is not only suitable for ring main units with sealed air chamber structure, but also for normal pressure metal enclosed ring main units.
Using a solution of environmentally friendly gas insulation and vacuum breaking, the combination of advantages has high overall performance. The primary circuit is gas sealed, the high-pressure components are not affected by altitude, are completely maintenance-free, and have strong environmental adaptability. The cabinet size is small and the layout space requirement is low. Products can be used in power grids, large industries, rail transit, commercial buildings and other usage scenarios.
This product is mainly used in indoor and outdoor ring network switching equipment in 10-24kV medium voltage distribution network systems to receive and distribute electric energy. It is suitable for top expansion, side expansion, and common box (maximum three units) ring network cabinet solutions. The parts common rate of the upper and lower isolation solutions reaches more than 90%. The product has high stability and strong versatility, and fully meets the type test requirements.
Dry compressed air is used as the insulating gas, which has high ionization field strength and breakdown field strength. It can quickly restore the insulation performance after breakdown. It has good chemical stability, is non-flammable, non-explosive, non-aging, non-corrosive and not prone to discharge. It is decomposed and has large specific heat capacity, good thermal conductivity and fluidity. This environmentally friendly insulating gas is not only non-toxic and harmless, but can be discharged directly into the atmosphere without causing air pollution. It also has good electrical properties and stability and can be used in the process of synthetic processing, equipment operation, arc, water vapor and other conditions. Under the combined action of external factors and during the final decomposition and transformation process, no toxic or harmful substances to people and the environment will be produced. The switch is made of thermoplastic material and is recyclable. There is no SF6 greenhouse gas emissions and no impact on the environment such as solid waste recycling.
Compact switch cabinet, the width of the typical 24kV solution is only about 460mm, the cabinet size is small, and the layout space requirement is low. Reliable wall installation, only 1m operating channel in front of the cabinet.
Using a long-life, maintenance-free vacuum arc extinguisher, the main conductive part is not affected by the external environment, and there is no need to configure SF6 gas on site.
Leak alarm device. The main circuit is fixedly connected and does not require rack-in and rack-out maintenance during the life cycle. Especially suitable for applications in plateau, coastal, alpine, high pollution and other areas.
Integration with secondary equipment can realize online monitoring, remote control and protection of equipment to meet the needs of intelligent distribution network.
It has side expansion and top expansion methods, flexible and convenient expansion, It is fully in line with China's power grid standardization and various customized solutions.
Adopting a split-phase insulation structure, there is no risk of phase-to-phase short circuit explosion; non-SF6 technology avoids SF6 gas leakage, which may lead to weakening of insulation and arc-extinguishing capabilities, resulting in breaking failure and the risk of box explosion; it has a complete "five prevention" interlocking structure , safe and easy to operate.
IE-EcoAir-24kV 630A is generally operated/serviced under normal indoor conditions and complies with IEC 62271-1 and GB3906. The specific conditions are as follows:
Maximum temperature: +40ºC.
Maximum temperature (24-hour average): +35°C.
Minimum temperature: -40ºC.
1, Side expansion casing.
2, Circuit breaker (load switch).
3, Three-station isolation switch.
4, Busbar.
5, Entry bushing.
6, Air tank.
7, Barometer.
8, Circuit breaker (load switch) mechanism.
9, Observation light.
10, Three-station isolation mechanism.
11, Ground observation window.
This product should be installed on the embedded channel steel on the concrete platform, and the platform base should be enough to bear the total weight of the equipment.
Note: The foundation channel steel for secondary pouring is buckled, and the unevenness per meter is no more than 1mm. The switch cabinet is fixed on the foundation channel steel and the basic load of the welded switch cabinet is allowed to be 500-700kg/unit.
Foundation and Overall Dimensions (mm):
Switch Cabinet and Appearance Installation Dimensions (mm):
The height of the switch cabinet is 1650mm (without independent instrument room). If independent instruments are required, the switch height is 2000mm. The standard configuration cabinet depth is 850mm.
All components inside the IE-EcoAir-24kV-630A are maintenance-free during the declared product life.
The isolation and grounding positions can be observed to provide safety guarantee for operation and cable construction.
The system loop is completely isolated from the atmosphere, and a special arc pressure relief channel is designed on the air box to ensure the safety of operators and equipment.
The mechanical part is located outside the air box and behind the front panel, making it easier to operate and replace. The surface of the mechanical part has undergone anti-corrosion treatment, and its movable parts have been lubricated before leaving the factory, which can meet the use of the product life cycle. In extreme environments (dust, sand and dirt) inspection, maintenance and, in some cases, replacement may be necessary.
The above parameters are typical data; if the existing styles do not meet your specific demands, please contact us for a custom design.We have significant personalized customization development and production skills, allowing us to provide tailored solutions to customers all over the world.
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