Beijing Qingchang power Technology Co.,Ltd
| Product Features | eco-friendly |
| Insulation method | gas insulated |
| voltage level | 10kV |
| Place of Origin | China |
| Brand Name | Qingchang |
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24kV QEFG Series Eco Friendly Gas Insulated RMU
Product Specification
| Product Features | eco-friendly | Insulation method | gas insulated |
| voltage level | 10kV | Place of Origin | China |
| Brand Name | Qingchang | ||
| High Light | 10kV gis rmu ，QEFG Series gis rmu ，gas insulated ring main unit rmu | ||
Typical primary plan
Rated Parameters
| S/N | Name | Unit | Load switchgear C | Combined electric cabinet F | |
| 1 | Rated frequency | Hz | 50/60 | ||
| 2 | Rated voltage | kV | 12 | ||
| 3 | Rated short-time power frequency withstand voltage | Phase-to-phase and Phase-to-earth | kV | 42 | |
| Across isolating distance | kV | 48 | |||
| 4 | Rated lightning impulse withstand voltage | Phase-to-phase and Phase-to-earth | kV | 75 | |
| Across isolating distance | kV | 85 | |||
| 5 | Rated current | A | 630 | 125 | |
| 6 | Rated peak withstand current | kA | 50 | / | |
| 7 | Rated short-time withstand current | kA | 20 | / | |
| 8 | Rated short circuit duration | s | 4 | / | |
| 9 | Rated short circuit breaking current | kA | / | 31.5 | |
| 10 | Closing current (peak) | kA | 50 | 80 | |
| 11 | Electrical life rating (main switchgrounding switch) | / | E2 | / | |
| 12 | gas rated pressure (20℃) | MPa | 0.025 | ||
| 13 | annual gas leakage rate | % | ≤0.01 | ||
| 14 | Mechanical endurance for circuit breaker | Time(s) | 10000 | ||
| 15 | Mechanical endurance for load switch | Time(s) | 3000 | ||
| 16 | Mechanical endurance for isolating switch | Time (s) | 3000 | ||
| 17 | Mechanical endurance for grounding switch | Time (s) | 3000 | ||
| 18 | Gas tank protection degree | / | IP67 | ||
| 19 | Shell protection degree | / | IP4X | ||
Product Overview
The QEFG series eco-friendly gas ring main unit is a gas switchgear independently developed by Beijing Qingchang. It uses a safe and eco-friendly mixed gas instead of SF6 as the insulation medium in the gas box to solve the problem of SF6 gas leakage pollution. It has a high level of operational safety and is used as the core unit in the distribution network.
The QEFG eco-friendly gas insulated ring main unit uses inert gases such as dry air, nitrogen, and C4 to provide insulation, making it more eco-friendly; The use of eco-friendly solutions is more in line with the development direction of China's power industry, so QEFG type eco-friendly gas ring main unit has become a more popular type of ring main unit in China at present. Compared to conventional switchgear products, QEFG ring main unit is more lightweight, convenient for transportation and installation. Excellent intelligent design fully meets the current demand for smart grids in China, improves electricity safety, greatly increases daily work efficiency, and reduces the burden of manual management.
Our QEFG series is divided into two types: QEFG II type (lower isolation); QEFG Type IV (upper isolation)
Product Features
Eco-friendly
This product uses no harmful gases or greenhouse gases, and more than 95% of the materials used are eco-friendly recyclable materials; the proportion of epoxy resin parts and components is less than 5%.
Maintenance Free
All high-voltage components are either gas-sealed or metal-enclosed, preventing rust and corrosion of parts. The electrical components have a long lifespan, stable performance, and can achieve maintenance-free operation.
Higher Reliability and Security
The conductive part of the main circuit is sealed with eco-friendly gases and the high-voltage live conductors are enclosed, unaffected by changes in external environmental conditions. This allows the equipment to be used in places with harsh environments, ensuring long-term operation. It has high reliability and no risk of electric shock or fire. Excellent gas tightness ensures it can serve for 30 years without needing gas replenishment.
No Partition/Solid Seal Design
The core switch design does not use interphase insulation partitions or solid seal methods to improve heat dissipation capacity and reduce the risk of partial discharge and phase-to-phase insulation failure caused by insulation aging failure.
Company Details
Business Type:
Manufacturer,Seller
Year Established:
1999
Employee Number:
300~400
Ecer Certification：
Verified Supplier
Beijing Qingchang Power Technology Co., Ltd. was established in 2005 with a registered capital of 103.8 million yuan. It is an innovative enterprise on the Beijing Stock Exchange, with stock code 430057 and 300 employees. The Company's headquarters is located in the Shangdi Informat... Beijing Qingchang Power Technology Co., Ltd. was established in 2005 with a registered capital of 103.8 million yuan. It is an innovative enterprise on the Beijing Stock Exchange, with stock code 430057 and 300 employees. The Company's headquarters is located in the Shangdi Informat...
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