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The Eco-Friendly Gas-Insulated RMU (HXGN(H)-12 series) is a cutting-edge medium-voltage power distribution equipment designed for modern power systems. As a gas-insulated ring main unit, it operates in 12kV three-phase AC systems, providing a reliable and sustainable solution for power reception and distribution. Unlike traditional units relying on harmful gases, this product adopts non-toxic insulating media, aligning with global environmental protection trends and smart grid requirements. Its compact structure and flexible configuration make it a preferred choice for various power distribution scenarios, balancing performance, safety, and eco-friendliness. Whether for urban areas, industrial zones, or special environments, the Eco-Friendly Gas-Insulated RMU delivers consistent and efficient power distribution support.

At the core of its functionality is the use of environmentally friendly insulating media such as nitrogen (N₂) or dry air. This medium replaces harmful alternatives, ensuring no toxic emissions during operation while maintaining excellent insulating performance. The sealed design of the high-pressure chamber retains the medium effectively, supporting stable operation even in fluctuating environmental conditions.
The Eco-Friendly Gas-Insulated RMU is equipped with a sophisticated interlocking system that prevents misoperation. The three-phase isolation fracture is clearly visible, allowing operators to verify the circuit state at a glance. This functionality ensures that disconnectors and earthing switches cannot be operated when the circuit breaker is active, eliminating potential safety hazards.
The product features a streamlined operation design, with a single operating handle for both disconnector and earthing switch. This eliminates the need for complex identification processes, enabling quick and accurate operation without professional technical training. The mechanism’s reliability ensures consistent performance even with frequent use.
Integrated with sensing technology and information technology, the Eco-Friendly Gas-Insulated RMU offers real-time online monitoring. It tracks equipment operating status, sending timely notifications to users for any anomalies. This functionality enhances distribution network automation, reducing the need for manual inspections and improving overall operational efficiency.
The Eco-Friendly Gas-Insulated RMU stands out for its strict environmental compliance. All production materials are non-toxic and recyclable, minimizing environmental impact throughout the product lifecycle. By avoiding greenhouse gas emissions, it supports sustainable development goals and meets stringent environmental regulations worldwide.
Most components of the gas-insulated ring main unit are fully sealed, excluding the high-voltage switch operating mechanism. This design eliminates the need for regular cleaning and maintenance, significantly reducing operational costs for power enterprises. The high degree of automation further cuts down labor requirements, optimizing resource allocation.
Safety is a top priority, with reinforced phase-to-phase isolation structures to prevent short-circuit expansion or explosions. The adoption of vacuum interrupters with explosion-proof properties and solid-sealed poles adds an extra layer of protection. The fully insulated and enclosed design also allows temporary water ingress without disrupting operation, provided basic cleaning and drying measures are taken.
The simplified operation interface and interlocking protection make the Eco-Friendly Gas-Insulated RMU accessible to operators of all skill levels. No complex technical training is required, reducing human error and ensuring smooth daily operations. The intuitive design enhances work efficiency and minimizes downtime.
With reserved intelligent interfaces and sensor installation positions, the product seamlessly integrates with smart grid systems. It can be upgraded with additional intelligent equipment to meet evolving network demands, supporting remote monitoring, data analysis, and automated control for modern power distribution networks.
Ideal for urban residential areas, the Eco-Friendly Gas-Insulated RMU provides safe and reliable power distribution for communities. Its compact size and low noise operation make it suitable for installation in basements or residential utility rooms without disrupting daily life.
Industrial and mining enterprises, shopping malls, and office buildings benefit from the product’s robust performance and flexible configuration. It adapts to the varying power demands of commercial facilities, ensuring stable power supply for machinery, lighting, and other critical systems.
Airports, subways, railways, and tunnels require power distribution equipment that can withstand harsh conditions. The Eco-Friendly Gas-Insulated RMU’s resistance to high humidity, salt spray, and temperature fluctuations makes it an excellent choice for these high-traffic areas.
It excels in special environments such as high-altitude regions, strong wind and sand areas, and severe cold zones. The sealed design and environmentally friendly insulating medium ensure reliable operation in conditions where traditional equipment may fail, making it versatile for diverse geographical locations.
Yes, all materials used in production are non-toxic and harmless. The insulating media (N₂ or dry air) emits no toxic substances during operation, and the product is fully recyclable at the end of its service life, ensuring complete environmental safety.
Absolutely. The Eco-Friendly Gas-Insulated RMU has a compact structure and requires no special ventilation, making it suitable for confined spaces like basements, tunnels, and ship cabins. Its low emission design ensures safety in enclosed environments.
Yes, it is a direct replacement for SF₆ load switch ring main units. It offers equivalent or superior performance without the environmental harm associated with SF₆, aligning with global efforts to reduce greenhouse gas emissions.
The Eco-Friendly Gas-Insulated RMU (HXGN(H)-12 series) is a cutting-edge medium-voltage power distribution equipment designed for modern power systems. As a gas-insulated ring main unit, it operates in 12kV three-phase AC systems, providing a reliable and sustainable solution for power reception and distribution. Unlike traditional units relying on harmful gases, this product adopts non-toxic insulating media, aligning with global environmental protection trends and smart grid requirements. Its compact structure and flexible configuration make it a preferred choice for various power distribution scenarios, balancing performance, safety, and eco-friendliness. Whether for urban areas, industrial zones, or special environments, the Eco-Friendly Gas-Insulated RMU delivers consistent and efficient power distribution support.

At the core of its functionality is the use of environmentally friendly insulating media such as nitrogen (N₂) or dry air. This medium replaces harmful alternatives, ensuring no toxic emissions during operation while maintaining excellent insulating performance. The sealed design of the high-pressure chamber retains the medium effectively, supporting stable operation even in fluctuating environmental conditions.
The Eco-Friendly Gas-Insulated RMU is equipped with a sophisticated interlocking system that prevents misoperation. The three-phase isolation fracture is clearly visible, allowing operators to verify the circuit state at a glance. This functionality ensures that disconnectors and earthing switches cannot be operated when the circuit breaker is active, eliminating potential safety hazards.
The product features a streamlined operation design, with a single operating handle for both disconnector and earthing switch. This eliminates the need for complex identification processes, enabling quick and accurate operation without professional technical training. The mechanism’s reliability ensures consistent performance even with frequent use.
Integrated with sensing technology and information technology, the Eco-Friendly Gas-Insulated RMU offers real-time online monitoring. It tracks equipment operating status, sending timely notifications to users for any anomalies. This functionality enhances distribution network automation, reducing the need for manual inspections and improving overall operational efficiency.
The Eco-Friendly Gas-Insulated RMU stands out for its strict environmental compliance. All production materials are non-toxic and recyclable, minimizing environmental impact throughout the product lifecycle. By avoiding greenhouse gas emissions, it supports sustainable development goals and meets stringent environmental regulations worldwide.
Most components of the gas-insulated ring main unit are fully sealed, excluding the high-voltage switch operating mechanism. This design eliminates the need for regular cleaning and maintenance, significantly reducing operational costs for power enterprises. The high degree of automation further cuts down labor requirements, optimizing resource allocation.
Safety is a top priority, with reinforced phase-to-phase isolation structures to prevent short-circuit expansion or explosions. The adoption of vacuum interrupters with explosion-proof properties and solid-sealed poles adds an extra layer of protection. The fully insulated and enclosed design also allows temporary water ingress without disrupting operation, provided basic cleaning and drying measures are taken.
The simplified operation interface and interlocking protection make the Eco-Friendly Gas-Insulated RMU accessible to operators of all skill levels. No complex technical training is required, reducing human error and ensuring smooth daily operations. The intuitive design enhances work efficiency and minimizes downtime.
With reserved intelligent interfaces and sensor installation positions, the product seamlessly integrates with smart grid systems. It can be upgraded with additional intelligent equipment to meet evolving network demands, supporting remote monitoring, data analysis, and automated control for modern power distribution networks.
Ideal for urban residential areas, the Eco-Friendly Gas-Insulated RMU provides safe and reliable power distribution for communities. Its compact size and low noise operation make it suitable for installation in basements or residential utility rooms without disrupting daily life.
Industrial and mining enterprises, shopping malls, and office buildings benefit from the product’s robust performance and flexible configuration. It adapts to the varying power demands of commercial facilities, ensuring stable power supply for machinery, lighting, and other critical systems.
Airports, subways, railways, and tunnels require power distribution equipment that can withstand harsh conditions. The Eco-Friendly Gas-Insulated RMU’s resistance to high humidity, salt spray, and temperature fluctuations makes it an excellent choice for these high-traffic areas.
It excels in special environments such as high-altitude regions, strong wind and sand areas, and severe cold zones. The sealed design and environmentally friendly insulating medium ensure reliable operation in conditions where traditional equipment may fail, making it versatile for diverse geographical locations.
Yes, all materials used in production are non-toxic and harmless. The insulating media (N₂ or dry air) emits no toxic substances during operation, and the product is fully recyclable at the end of its service life, ensuring complete environmental safety.
Absolutely. The Eco-Friendly Gas-Insulated RMU has a compact structure and requires no special ventilation, making it suitable for confined spaces like basements, tunnels, and ship cabins. Its low emission design ensures safety in enclosed environments.
Yes, it is a direct replacement for SF₆ load switch ring main units. It offers equivalent or superior performance without the environmental harm associated with SF₆, aligning with global efforts to reduce greenhouse gas emissions.
| Rated voltage | ||||
| Project | Unit | Parameter | ||
| Rated frequency | KV | 12 | ||
| HZ | 50 | |||
| Rated insulation level | 1min power frequency withstand voltage | To ground, between phases | KV | 42 |
Isolating break | 48 | |||
| "Lightning impulse withstand voltage (peak value)" | To ground, between phases | KV | 75 | |
| Isolating break | 85 | |||
| 1min power frequency withstand voltage of auxiliary/control circuit (to ground) | KV | 2 | ||
| Rated current | A | 630 | ||
| Rated short - time withstand current (effective value) | Main circuit / Earthing switch | KA | 25/4s | |
Earthing connection circuit | 21.7/4s | |||
| Rated peak withstand current | Main circuit / Earthing switch | KA | 63 | |
| Earthing connection circuit | 54.5 | |||
| Rated short - circuit breaking current and times | KA/per time | 25/30 | ||
| Rated short - circuit making current (peak value) | KA | 63 | ||
| Rated cable charging breaking current | A | 25 | ||
| Rated operating sequence of circuit breaker | O - 0.3s - CO - 180s - CO | |||
| Mechanical life | Circuit breaker / Isolating switch | per time | 10000/3000 | |
| Protection class | Sealed cabinet | IP67 | ||
Switchgear enclosure | IP4X | |||
| Gas pressure | Rated gas filling level (20°C, gauge pressure) | MPA | 0.02 | |
Minimum functional gas level (20°C, gauge pressure) | MPA | 0 | ||
| Sealing performance | Annual leakage rate | % per year | ≤0.05 | |
| Rated voltage | ||||
| Project | Unit | Parameter | ||
| Rated frequency | KV | 12 | ||
| HZ | 50 | |||
| Rated insulation level | 1min power frequency withstand voltage | To ground, between phases | KV | 42 |
Isolating break | 48 | |||
| "Lightning impulse withstand voltage (peak value)" | To ground, between phases | KV | 75 | |
| Isolating break | 85 | |||
| 1min power frequency withstand voltage of auxiliary/control circuit (to ground) | KV | 2 | ||
| Rated current | A | 630 | ||
| Rated short - time withstand current (effective value) | Main circuit / Earthing switch | KA | 25/4s | |
Earthing connection circuit | 21.7/4s | |||
| Rated peak withstand current | Main circuit / Earthing switch | KA | 63 | |
| Earthing connection circuit | 54.5 | |||
| Rated short - circuit breaking current and times | KA/per time | 25/30 | ||
| Rated short - circuit making current (peak value) | KA | 63 | ||
| Rated cable charging breaking current | A | 25 | ||
| Rated operating sequence of circuit breaker | O - 0.3s - CO - 180s - CO | |||
| Mechanical life | Circuit breaker / Isolating switch | per time | 10000/3000 | |
| Protection class | Sealed cabinet | IP67 | ||
Switchgear enclosure | IP4X | |||
| Gas pressure | Rated gas filling level (20°C, gauge pressure) | MPA | 0.02 | |
Minimum functional gas level (20°C, gauge pressure) | MPA | 0 | ||
| Sealing performance | Annual leakage rate | % per year | ≤0.05 | |