HCRT Environmental Gas Insulated Ring Main Unit: Practitioner of Green Power Distribution

As one of China's leading suppliers of intelligent power distribution network equipment, HCRT successfully developed and launched its independently researched environmental gas insulated ring main unit as early as 2015. The successful application of this product marks a substantial breakthrough for the company in the field of green and environmentally friendly power distribution, successfully serving core power systems such as the State Grid and providing reliable equipment support for building environmentally friendly grids.

I.Product Positioning: Green Solution to Replace SF₆

HCRT's environmental gas insulated ring main unit is a medium-voltage power distribution equipment launched by the company in active response to global environmental trends, targeting the pain point of the extremely strong greenhouse effect of traditional SF₆ gas. This product uses dry, clean air or nitrogen as the insulating medium, completely abandoning SF₆ gas, achieving a Global Warming Potential (GWP) of zero, and fundamentally eliminating carbon emission risks from insulating gases in power distribution equipment.

II.Core Technology: Vacuum Interruption and Normal Pressure Sealed Insulation

HCRT's environmental cabinet adopts the industry's mainstream and most reliable technical route:

Vacuum Arc Extinguishing Technology: In the core part of the switch, high-performance vacuum interrupters are used to break load currents and fault currents, ensuring reliable switch operation and long electrical life.

Environmental Gas Insulation: Dry air or nitrogen is used as the main insulating medium for busbars, connection points, and the exterior of vacuum interrupters. These gases are non-toxic, harmless, non-flammable, and absolutely safe for personnel and the environment even in case of leakage.

Normal Pressure Sealing Technology: According to public information, the internal pressure of the gas tank is basically consistent with atmospheric pressure. This design not only completely solves the challenges and potential leakage risks of high-pressure gas sealing but also simplifies the product structure and reduces operation and maintenance complexity.

III.Historical Milestone: Successful Practice in 2015

2015 was a key milestone in the development of HCRT's environmental cabinet. In that year, the company successfully completed product development and verification, putting it into the market and applying it to State Grid system distribution network construction and transformation projects. This successful case not only proved the technical maturity and reliability of HCRT's environmental cabinet but also demonstrated the State Grid's forward-looking acceptance and application of new green and environmentally friendly power distribution technologies, playing a positive demonstration role for the subsequent large-scale promotion of environmental gas insulated equipment in China.

IV.Product Advantages and Value

Ultimate Environmental Protection: Insulating medium with GWP=0, ODP=0, fully compliant with the "dual carbon" strategy's green requirements for power equipment.  

Absolute Safety: Insulating medium is non-toxic and non-flammable, ensuring safe and reliable equipment operation.

Maintenance-free Design: Normal pressure (or slight positive pressure) sealed structure requires no gas pressure monitoring or regular replenishment, greatly reducing users' operation and maintenance burden.

Compact and Flexible: Modular and miniaturized design with compact structure, saving installation space and suitable for various complex power distribution scenarios.

V.Applications and Outlook

Since successfully serving the State Grid system in 2015, HCRT's environmental gas insulated ring main units have been widely applied in urban grids, industrial and commercial power distribution, new energy access, and other fields. The company continues technological iteration and product upgrades in this field, committed to providing full-lifecycle low-carbon and environmentally friendly solutions for intelligent power distribution networks, becoming an important force in promoting the green transformation of the power distribution industry.