DLNC102-12
Normal pressure sealed air insulated ring network metal-enclosed switchgear
This product is a miniature air-insulated switching device. Its core unit employs a patented fixed vacuum circuit breaker, characterized by its safety, reliability, and green intelligence. It is well-suited for applications in power system distribution networks, municipal projects, industrial power distribution, commercial real estate, and residential areas. This miniature air-insulated switching device conforms to the new technical standards for the two networks, embodies environmentally friendly concepts, and leads the future development trend of green ring main units.
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- Product Overview
This product is an air-insulated, miniaturized switchgear. The core unit uses a self-invented patented fixed vacuum circuit breaker, featuring safety, reliability, and green intelligence. It is ideal for power system distribution networks, municipal projects, industrial power distribution, commercial real estate, residential communities, and more. This air-insulated, miniaturized switchgear conforms to the new technical standards for the two networks, embodies environmentally friendly concepts, and leads the future development trend of green ring main units.
This product uses air insulation. The enclosure is not completely sealed; the air pressure is the same as the external atmospheric pressure. It exchanges gas with the outside world after filtration by a filter element. The modular installation scheme enables maintenance-free air tanks. Over 90% of the metal materials in the switchgear are degradable materials, meeting the development needs of environmental protection.
The atmospheric pressure sealed air-insulated ring main metal-enclosed switchgear meets the development needs of smart distribution networks. The operating mechanism can be manual or electric, providing signal switch position signals and current and voltage signals to achieve "three remote" functions and meet the near-term and long-term development of primary and secondary integration.
"Plug and play" function: According to the different stages of distribution network construction, different functional modules can be installed to achieve the corresponding functions. Functional expansion is simple and convenient.
- Product Features
●Air-insulated miniaturized switchgear, ensuring 30 years of maintenance-free operation
● Modular design, easy and flexible installation
● Circuit breaker level design, effectively isolating faults and short-circuit currents
● Three-position isolation/grounding switch, safe and reliable operation
● Three-position isolating switch with visible break, safe and convenient for inspection and maintenance
● Integrated and intelligent, fully meeting the needs of power grid automation
● Electric field simulation optimized electrodes, improving the insulation margin inside the air tank
● Ample cable compartment height, convenient cable installation
● Large control box space, reserving space for installing intelligent power distribution terminals
● Modular design, safe and convenient busbar splicing
- Product Parameters
Serial Number | Project Name | Unit | Parameter Value | |
1 | Rated Voltage | kV | 12 | |
2 | Rated power frequency withstand voltage (phase-to-phase, phase-to-ground) | kV | 42 | |
3 | Rated power frequency withstand voltage (break) | kV | 48 | |
4 | Rated lightning impulse withstand voltage (phase-to-phase, phase-to-ground) | kV | 75 | |
5 | Rated lightning impulse withstand voltage (break) | kV | 85 | |
6 | Busbar rated current | A | 630/1250 | |
7 | Rated short-time withstand current | Rated current | A | 630/1250 |
Rated short-time withstand current | kA/s | 20、25/4 | ||
Rated peak withstand current | kA | 50、63 | ||
Rated short-circuit breaking current | kA | 20、25 | ||
Rated short-circuit closing current | kA | 50、63 | ||
8 | Three-position isolating switch parameters | Rated current | A | 630、1250 |
Rated short-time withstand current | kA/s | 20、25/4 | ||
Rated peak withstand current | kA | 50、63 | ||
9 | Load switch | Rated current | A | 630 |
Rated short-time withstand current | kA/s | 45772 | ||
Rated peak withstand current | kA | 50 | ||
10 | Mechanical life | Circuit breaker | Times | 10000 |
Load switch |
| 10000 | ||
Isolating switch |
| 5000 | ||
Grounding switch |
| 3000 | ||
11 | Rated operating sequence of circuit breaker |
| O-0.3s-CO-180s-CO | |
12 | Dimensions (width x depth x height) | mm | 460x770x1726 | |
13 | Enclosure/main body protection level |
| IP4X/IP65 | |
14 | Main body protection level |
| IP65 | |
15 | Partial discharge of the entire cabinet |
| ≤10pC | |
- Operating Environment
● Ambient temperature: Upper limit +50°C, lower limit -40°C
● Air humidity: Daily average ≤95%, monthly average ≤90%
● Altitude:≤1000m
● Protection level:Main body IP65, enclosure IP4X
● Special environmental conditions: If there are special operating environments different from the above operating conditions, the user needs to negotiate with the manufacturer when ordering.
If the product is used in more severe environments, such as high altitude, low temperature, or severe pollution, please contact us.
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