Description
DFW cable branch box is designed for outdoor maintenance free operation, safe and reliable and its protection degree reaches IP33. The underground branch connector is anti-flood. It is widely used in urban industrial district, residential district, commercial center, mining area, large scale enterprises such as steel, automobile, petroleum, chemical industry, cement, and other occasions, It is particularly suitable for urban power grid reconstruction project, which can greatly save the investment of electrical equipment and cables, and improve the reliability of power supply.
Features
1. Small size, compact structure, easy to install and operate
2. Stainless steel or metal steel board ,which thickness ≥ 2mm
3. Anti-corrosion & with special Spray-painting artworks
4. Usage life more than 30 years.
5. It can be used in some harsh environments like high or lower temerature ,some dust area
6. Fully sealed structure,without insulation distance
7. High voltage electric parts with cable connector or use silicon rubber for people safety.
8. With zno arrester
9. Its cables can be splitted into be 7 branches to work together with SF6 loading switches to reach net power-supplying.
10. The cable connector can be used as switch, it can be on or off with loading. The max on-off voltage can reach 200Amp.
11. After fix the fault indicator, user can test circuit fault very quickly
12. Cheaper cost ,save cable
13. Cable connectors comply with IEEE386 standard,all cables are suitable for crosslinking polyethylene insulated cables.
Technical Specification
No | Item | Unit | Data | |||
1 | Rated voltage | kV | 12kV | 24kV | 36kV | |
2 | Rated current | A | 630 | |||
3 | Rated short-time withstand current | kA | 20/3s | |||
4 | Dynamic stable current | kA/0.3s | 50 | |||
5 | Thermally stable current | kA/3s | 20 | |||
6 | Power frequency withstand voltage/1min | kV | 42 | 55 | 85 | |
7 | Lightning impulse withstand voltage | kV | 75/85 | 125/150 | 170/185 | |
8 | Partial discharge test | Less than 9kV | Less than 15kV | Less than 45kV | ||
Discharge amount: ≤10PC | Discharge amount: ≤10PC | Discharge amount: ≤10PC | ||||
9 | Enclosure protection class | IP44 |