2020年澳门六开彩历史开奖记录

  

The quality of survival, technology and development
Quality for survival, technology for development
DFW-12 type High Voltage Cable Distribution Box
DFW-12 type High Voltage Cable Distribution Box
DFW-12 type High Voltage Cable Distribution Box

Description:

DFW-12 type High Voltage Cable Distribution Box is a kind of connection and tapping products for power cables. The product adopts SF6 load switch or vacuum circuit breaker as the control switch and has strong ability of breaks under rated active load short-circuit closing current. In addition, it can be equipped with lightning arrester and ground fault indicator according to user requirements.

Features:

u Fully insulated and sealed, maintenance-free. Guarantee personal safety.

u Strong environmental adaptability and flexible combination.

u Load switch or vacuum circuit breaker can be installed on each ring connection line. Any branch circuit can be freely exited and put into operation without affecting other ring network loops.

u Fuse can be attached to the load switch to assure power continuity of non-faulty sub-loops.

u Adoption of the flood-proof and touchable cable head greatly improves the reliability of power supply.

u Flexibility in line operation, maintenance and haul can be achieved by any combination of load switches or circuit breakers and cable heads.

Using environment:

u Temperature: Min -30℃~Max+40℃;

u Relative humidity: Daily average ≦95%; Monthly average≦90%;

u Altitude: ≦1000m;

u Shock level: Horizontal acceleration 0.4m/s 2,Vertical acceleration 0.15m/s2;

u Installation location: The place with no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion risk.

When the conditions of use exceed the above range, the user shall negotiate with us to determine the allowable range or take corresponding supplementary technical measures.

Technical Parars:

Items

Unit

Value

Rated voltage

kV

12

Rated current

A

630

Rated short-time withstand current

kA/4s

20

Rated peak withstand current

kA

50

Power frequency withstand voltage( valid value)

kV/1min

42

Lightning impulse withstand voltage

kV

75

Secondary circuit power frequency withstand voltage

kV/1min

2

Negative DC withstand voltage

kV/15min

52

Partial Discharge

PC

20

Number of rated breaking current

time

100

Rated charging breaking current

A

10

Rated circuit-closed breaking current

A

630

Mechanical endurance

time

5000/2000

IP grade

 

IP33

SF6 gas pressure

Bar

0.45

SF6 gas leak

 

0.05%/year

Maximum cross-sectional area of the cable

mm2

400


Product details
2020年澳门六开彩历史开奖记录