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ellumi-3 series ring main unit

1. product introduction
ellumi-3 series ring main unit is applied in 10kv distribution system, which can realize ring network power supply and radial power supply. it has the characteristics of small size and compact structure, and can greatly save the floor area of switching station or distribution room. therefore, it is widely used in industrial area, high-rise buildings, large public buildings, residential areas, prosperous commercial centers, outdoor switch boxes, box type substations and other places.
2. product features
◆ it is safe and reliable. the air box body and cable connection room are equipped with fault arc protection design, and the bottom of the air box and cable connection room is equipped with explosion relief film and pressure release device, which can maximize personal safety
◆ the switch cabinet shell is assembled by c-section. the whole shell is divided into instrument room, main bus room, circuit breaker room and cable room. each compartment is separated by metal partition
◆ vs1-12 series vacuum circuit breaker is used as the main switch for closing the cabinet, gn30s-12 or gn22-12 series is used as the isolation switch, and full insulation structure is used for the transformer, so the safety margin of the whole cabinet is high

3. main technical parameters

 

item

unit

load switch cabinet

combination cabinet

breakers cabinet

 

 rated working voltage ue

kv

12

 

rated insulation level 1min power frequency withstand voltage

kv

相对地及相间:42

隔离断口:48

 

rated insulation level lightning shock resistance

kv

75

 

rated current

a

630

125

630/1250

 

rated active load  reaking current

a

630

 

 

 

rated closed-loop breaking current

a

630

 

 

 

rated cable charging breaking current

a

10

 

25

 

rated cable charging breaking current

ka

31.5

25

rated short circuit closing current

ka

50

80

63

rated short-term withstand current

ka

20

 

25

rated peak withstand current

ka

50

 

63

mechanical life operating cycle

 

5000

5000

10000

 

temperature

 

-40- 40

sf6 air pressure

mpa

0.03

arc resistance

ka/s

20

 

ip class

 

ip67 for air tank and ip4x for other parts

 

4. overall dimensions

n/a 


 

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