Sulphur hexafluoride SF6 has been widely used as an insulating and switching medium in load switchgear since the 70s of the 20th century, but it is a potent greenhouse gas that warms 23,900 times more than CO2. As one of the first power companies in the world to research fluorine-free gas insulation technology, Eaton continues to innovate insulation technology to accelerate the low-carbon development of enterprises.
Recently, Eaton released the green and low-carbon RVACN-K environmentally friendly gas load switchgear ring main unit, which replaces traditional SF6 switchgear with dry air insulation technology combined with an integrated three-station switch design, reduces harmful greenhouse gas emissions, and fully integrates Internet of Things technology to integrate intelligent and green and low-carbon concepts into product innovation paths to help the world achieve climate governance goals.
01Truly say goodbye to SF6 to empower green power
Eaton has been innovating and promoting environmentally friendly insulation technology for medium-voltage electrical equipment for more than 60 years, and the RVACN-K environmentally friendly gas load switch-type ring main unit innovatively uses dry air to achieve a fluorine-free solution with good insulation and arc extinguishing performance, rejecting greenhouse gas emissions, greatly improving the climate friendliness of medium-voltage switchgear, and opening up a critical path for the construction of green grids and eco-friendly power systems.
The one-piece three-station switch design continues to deliver excellent performance
SF6-free technology isn't just about gas substitution, it's about getting nearly the same performance benefits as SF6 switchgear. Based on more than 90 years of experience in vacuum arc extinguishing, Eaton's RVACN-K environmentally friendly gas load switched ring main unit adopts an integrated three-station switch design, with a full load breaking capacity of 200 times, and excellent electrical performance to ensure the safety and reliability of the product. At the same time, it continues the user's original three-station operation habit to ensure the convenience of operation.
When it comes to electrical safety design, Eaton has always put people first. All compartments in the RVACN-K environmental protection gas load switch ring main unit cabinet are designed to follow the concept of safe touch from the outside, and through the use of visual grounding design, the position of the isolation break and the grounding switch is visible, making it easier for staff to access and maintain.
Enclosed and insulated design is not afraid of harsh environments
Eaton's new SF6 FREE RVACN-K environmentally friendly gas load switch-type ring main unit adopts a fully sealed and fully insulated design, the main circuit is sealed in a 304 stainless steel gas box, and has passed the 0 gauge pressure test, and the protection level reaches IP67, which is not affected by the external environment such as salt spray, moisture, pollution, temperature, etc., and can be used maintenance-free during the life cycle, avoiding operational risks and environmental impacts. When the equipment is recycled, there is no need for additional processing, which is a significant cost saving.
Digital Deep Empowerment - A New Engine for Intelligent Power Distribution
In the face of decentralized equipment distribution, complex operation and maintenance management, and more stringent safety and reliability requirements, Eaton has deeply empowered the new products with digital technology, and the upgraded iRVACN intelligent solution can monitor temperature rise, partial discharge, full battery, mechanical characteristics, gases, etc. online through digital means, so as to self-diagnose the health status of equipment. These monitoring data can be viewed through terminals such as HMI intelligent status displays on the cabinet, helping enterprises to dig deeper into the benefits of digitalization.
On-line monitoring of partial discharge
SwitchGard partial discharge online monitoring, through continuous real-time partial discharge monitoring, can find and locate potential problems of equipment insulation earlier and more timely, help staff targeted detection or maintenance, improve equipment operation reliability, and reduce maintenance costs.
Intelligent wireless temperature measurement
The wireless temperature measurement nut device fully covers the key cable connections of the ring main unit, realizes all-digital measurement transmission through the sensor, and uses radio frequency identification technology to provide wireless power supply for the sensor to achieve true wireless passive temperature measurement. The wireless temperature measurement system actively predicts risks, real-time alarms, and locates faults by monitoring the temperature rise of the distribution system in real time, so as to improve the reliability of power distribution in an all-round way with predictive maintenance.
RVACN-K environmental protection gas load switch type ring main unit has a compact design, can be compatible with the standardized custom size of the State Grid, and the modular design can be expanded and merged, freely combined with various module units, and there are fuse cabinets to choose from, which can provide flexible supply solutions for substations, industries, commercial buildings, new energy power stations, infrastructure, etc. The COOPER prefabricated shielded touch cable attachment can be operated underwater or other harsh conditions for a long time, making the ring main unit more suitable for special applications such as underground distribution rooms and tunnels.
As more and more SF6-free switchgear is used, Eaton is a reliable partner that will provide customers with technical support during equipment decommissioning and replacement through proven recycling and disposal services, providing a surging impetus for economic development and positive change for the environment, and writing a safe, smart electrified future with sustainable development.
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