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DFT6-12 (40.5) Cable Distribution Box
Number of views:
1000

DFT6-12 (40.5) Cable Distribution Box

During the continuous transformation and construction of the urban distribution network, a large number of overhead lines in the city were replaced by cable lines, and the pole switches were replaced by switch cabinets. DFT6-12 (40.5) outdoor ring network box is a new type of power supply equipment designed by Tianan Electric to cooperate with the 10kV (35kV) power network cable system. It is widely used at the cable node in the 10kV (35kV) system as the reception and distribution of electric energy. For use. Each ring network line in the product is equipped with a load switch or vacuum circuit breaker, any branch circuit can be freely exited and put into operation, and other ring network circuits are not affected. When the combined electrical scheme is adopted, when a short circuit fault occurs in a branch circuit, the fuse on the branch circuit can quickly disconnect the fault circuit and hit the release of the load switch to open the fault circuit. This ensures that the fault circuit is isolated. Continuity of power supply for non-faulty branch circuits.
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Number of views:
1000
Product serial number
D11
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1
Detail
Parameters
Features
Technical Parameter
Case

During the continuous transformation and construction of the urban distribution network, a large number of overhead lines in the city were replaced by cable lines, and the pole switches were replaced by switch cabinets. DFT6-12 (40.5) outdoor ring network box is a new type of power supply equipment designed by Tianan Electric to cooperate with the 10kV (35kV) power network cable system. It is widely used at the cable node in the 10kV (35kV) system as the reception and distribution of electric energy. For use. Each ring network line in the product is equipped with a load switch or vacuum circuit breaker, any branch circuit can be freely exited and put into operation, and other ring network circuits are not affected. When the combined electrical scheme is adopted, when a short circuit fault occurs in a branch circuit, the fuse on the branch circuit can quickly disconnect the fault circuit and hit the release of the load switch to open the fault circuit. This ensures that the fault circuit is isolated. Continuity of power supply for non-faulty branch circuits.

Product application: Urban industrial districts, residential districts, commercial centers, mining areas, airports, railways, wind power stations, opening and closing stations, and large steel, petrochemical, cement and other large enterprises and other occasions of distribution networks, especially suitable for urban road grid transformation Engineering can greatly save electrical equipment and cable investment.

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1)The cable junction box is an outdoor type, fully insulated, fully sealed, fully shielded structure, no insulation distance is required, and is resistant to heavy pollution, condensation, and flooding, meeting outdoor all-weather operating conditions;
2)Small footprint, easy to move, beautiful appearance, easy to coordinate with the surrounding environment;
3)The box body is made of high-quality stainless steel plate, lined with anti-corrosion cedar board, which has strong corrosion resistance, sturdiness and durability, and a service life of 30 years;
4)The inner cabinet adopts a miniaturized SF6 inflatable cabinet or an environmentally friendly gas cabinet, and all high-voltage live parts of the switch cabinet are enclosed in an airtight box;
5)The use of flood-proof touchable cable heads can withstand flooding and greatly guarantee the reliability of power supply;
6)It is easy to add the assembly network automation, and realize the first and second integration;
7)The structure is flexible and can form simple to complex power distribution schemes to meet various configuration requirements in secondary substations and switching stations.

 

 

Serial number

Project

Unit

Technical parameter

1

Rated voltage

kV

12

40.5

2

Rated frequency

Hz

50/60

50/60

3

Rated current

A

630

630

4

Rated power frequency withstand voltage

kV

42

95

5

Rated lightning impulse withstand voltage

kV

75

185

6

Rated breaking short circuit breaking current

Fuse

kA

31.5

31.5

breaker

kA

20

20

7

Rated short-time withstand current (effective value)/time

kA/s

20/4

20/4

8

Protection level of switch cabinet body

IP

67

67

9

Outer box protection level

IP

33

33

10

Rated working pressure of SF6 gas (gauge pressure at 20℃)

MPa

0.04

0.04

11

Minimum working pressure of SF6 gas (gauge pressure at 20℃)

MPa

0.02

0.02

12

SF6 gas annual leakage rate

%/year

≤0.2

≤0.2

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