AISELA Series Compartment-type Ring Main Unit
Negotiable
China
National (Xuchang) Power Electronics System Industrial Park, Yangguang Avenue, Weidu District, Xuchang City, Henan Province
0374-3216642
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Product Introduction

The AISELA series SF6 ring switch unit has a rated voltage of 12kV and a rated current of 630A. It is a metal-enclosed switchgear that uses sulfur hexafluoride load switches as the main switch and employs air insulation for the entire cabinet. It can provide various functional combination units for medium-voltage distribution networks. Suitable for ring main units in 12kV medium-voltage distribution networks, it is widely used for incoming and outgoing line control and connection in urban underground cable ring networks and radial power grids, as well as for incoming and outgoing line control and connection in mixed networks of underground cables and overhead lines, achieving ring power supply and radial power supply. The product can be connected and coordinated with cable branch boxes, box-type substations, and overhead line equipment. It can also be used in: railways, wind power stations, small factories, light mining equipment, subways and tunnels, commercial centers, shopping malls, hotels, office buildings, etc., and can also be installed in compact box-type substations.

Performance Features:

  • The main switch is three-position, integrating load switch and grounding switch, using epoxy resin as the switch housing, filled with SF6gas as the insulation medium inside, with high reliability;
  • The switchgear as a whole uses air insulation, which is convenient for maintenance, has low product cost, and strong market competitiveness;
  • Compact external dimensions, simple structure, flexible operation, reliable interlocking, convenient expansion and installation, and low maintenance costs;
  • This series of products has two sub-types: ordinary type and standardized product, which can meet the vast majority of domestic usage scenarios.
Product Parameters

Name

Unit

Load switch

Negative fusion combination

Circuit Breaker Unit

Rated voltage

kV

12

12

12

Rated current

A

630

630

630

Rated short-time power frequency withstand voltage (phase-to-phase, to ground/fracture)

kV

42/48

42/48

42/48

Rated lightning impulse withstand voltage (phase-to-phase, to ground/fracture)

kV

75/85

75/85

75/85

Rated short-time withstand current

kA/s

20/4

20/4

20/4

Rated short-circuit closing current

kA

50

50

50

Rated inflation pressure (relative at 20 ℃)

MPa

0.045

0.045

0.02

Degree of protection (enclosure)

/

IP41

IP41

IP41

Degree of protection (inflatable compartment)

/

IP67

IP67

IP67

Annual leakage rate

%

≤ 0.05

≤ 0.05

≤ 0.01

Mechanical life

Times

5000

5000

10000

Ground short circuit closing times

Times

5

5

5

Structure form

/

/

/

Line side three stations

Cabinet width

mm

375/500

375/500

500