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Dingli Electric's main products include five series: environmentally friendly ring network cabinets, environmentally friendly high-voltage metering cabinets, deeply integrated pole-mounted switches, European-style box-type transformers, Siemens-authorized NXAirsLP medium-voltage cabinets and SIVACON 8PT low-voltage cabinets, and Eaton-authorized RVAC series ring network cabinets, etc.

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  • DLNC102-12型常压密封空气绝缘环网金属封闭开关设备.jpg

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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Key words:

-  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 levelMain 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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