Summary
High voltage cable branch box in 10kV distribution network cable engineering of power system，It is a difficult problem to replace a large number of branches in the empty line of the original grid structure with an economical, reliable and easy to maintain connection mode，The emergence of cable branch box completely solves this problem, and with its fully insulated and sealed characteristics, the line failure rate is greatly reduced, becoming the preferred equipment for distribution network cable engineering。Its simple, convenient and flexible connection combination mode makes it replace the ring network cabinet in some occasions; when necessary, it can be buried in the ground or immersed in the water, saving the investment of equipment and cables, improving the reliability of power supply, and widely used in commercial centers, industrial parks and urban dense areas。Cable branch box can be divided into：American cable branch box、European cable branch box and Cable branch box with switch,total three kinds。
Classification
American cable branch box
American cable branch box is a kind of cable engineering equipment widely used in North America power distribution system，It is characterized by one-way door opening and、horizontal multichannel busbar，have small width, flexible combination, full insulation, full sealing advantages。According to the rated current, it can be generally divided into 600A main circuit and 200A branch circuit two ways 。600A main circuit fixed connection with screw in bolts;200A branch circuit use plugged in connection，and contains plugged with load。American cable branch box used the cable joints fit IEEE 386 standard。
Functions and features
Fully insulated and sealed structure，No insulation distance required，reliable guarantee of personal safety。
Dustproof, flood resistant, corrosion-resistant, maintenance free，It can be used outdoors or immersed in water, suitable for any harsh environment。
Extremely flexible combination，Incoming and outgoing line branch Up to 8，Can achieve various wiring requirements。
Small size, compact structure, simple installation and convenient operation。
200A branch cable connector can be used as load switch，contains plugged with load，and disconnector function.。
It can connects Short circuit fault indicator，Easy to find cable faults quickly。
There are a variety of box materials to choose from common steel with military green、mirror stainless steel、stainless steel with military green etc.
European cable branch box
European cable branch box,It is a cable engineering equipment widely used in power distribution system in recent years，Its main feature is two-way door opening、Using through wall casing pipe as connection busbar，With small length, clear cable arrangement and three core cableNo need for Large Span Crossing features。Cable joints used fit DIN47636 standards。Generally used the rated current is 630A bolt on cable joint
Functions and features:
Full insulation, full sealing, full protection and full working condition。
Flexible in&out line，In fact Up to 8 branches of practical application in&out line
Anti flood, anti pollution, anti condensation, anti frost, anti-corrosion.
Small size, compact structure, simple installation and convenient operation.
Electric indicator can be installed，Prompt the operator that the line is Electrification。
Installable SF6 switch。
Installable cable type fault indicator，Easy to find cable faults quickly。
There are a variety of box materials to choose from:common steel with military green、mirror stainless steel、stainless steel with military green .
Technical parameter

Adaptive environment

1. Temperature environment：Maximum temperature+40℃，Minimum temperature-30℃
2. wind speed：Amount to 34m/s（No more than 700Pa）
3. Humidity：The average daily relative humidity is not greater than 95%

      Monthly average relative humidity is not greater than95%

1. Quakeproof：Horizontal acceleration not greater than 0.4k/s²，Vertical acceleration not greater than 0.15m/s²
2. Inclination of installation site：No more than 3°
3. Installation environment：The surrounding air shall be free from corrosive, combustible gas, water vapor and other obvious pollution, and there shall be no violent vibration at the installation site