SMC Cable Branch Box
● Material: SMC ● Usage Scene：Power plants, substations and other power places
Categories：
Cable Branch Box
Product Overview
Low-voltage cable branch box is widely used in cable distribution network system of cable engineering equipment, mainly power cables and box variable, load switch cabinet, negative a fused combination of electrical cabinet, ring network power supply unit and so on connected, play a tap, branching, relaying or conversion role for the cable network to provide great convenience.
Model Meaning
DFW-cable branch box
□-number of main circuits
□-Number of branch circuits
□ - Cabinet design serial number (A1, A2, B1, B2)
□- Rated current of main circuit
□-Program number
Functional Characteristics
SMC: SMC cable transfer box box body adopts SMC composite material (sheet molding plastic) molded at high temperature. It has light specific gravity, anti-seismic corrosion, aging resistance, good sealing performance, beautiful, all-weather protection function, can meet the needs of various harsh environments and places in the outdoor engineering projects, to overcome the outdoor metal cable branch box box easy to corrosion and short service life and poor thermal insulation and heat preservation performance and other defects.
Main technical parameters
No. | Item | Unit | Technical Parameters | |
1 | Box | Structure type |
| Inlet line adopts disconnecting switch, outlet line adopts molded case circuit breaker. |
Installation |
| Outdoor floor-standing type | ||
Box material |
| 304 stainless steel | ||
Shell protection grade |
| IP44 | ||
Box size |
|
| ||
2 | Busbar | Rated operating voltage | V | 400 |
Rated insulation voltage | V | 690 | ||
Rated frequency | Hz | 50 | ||
Rated current | A | 160/250/400/630 | ||
Rated short-circuit withstand current |
| 10kA，1S | ||
Busbar material |
| T2 electrical copper | ||
3 | Isolation switch | Number of poles |
| 3P |
Rated working voltage | V | 400 | ||
Rated insulation voltage | V | 690 | ||
Rated current | A | 160/250/400/630 | ||
Rated short-time withstand current |
| 10kA，1S | ||
4 | Plastic case circuit breaker | Number of poles |
| 3P |
Breaker type |
| Electronic type Configuration of three-stage protection function of the electronic release (long and short delay with the machine well motor start time length) | ||
Rated operating voltage | V | 400 | ||
Rated insulation voltage | V | 690 | ||
Rated current | A | 250/160/400 | ||
Rated ultimate breaking capacity | kA | 50 | ||
Rated operating breaking capacity | kA | 35 | ||
Operating conditions
Name | Unit | Project demand value | |
Filth level |
| III (indoor)/IV (outdoor) | |
Ambient temperature | Ambient temperature | ℃ | -25℃~＋40℃（indoor） |
-25℃~＋45℃（outdoor） | |||
Maximum daily temperature difference | K | 25 | |
Hottest monthly average temperature | ℃ | 30 | |
Maximum annual average temperature | 20 | ||
Humidity | Average daily relative humidity | % | ≤95 |
Monthly average relative humidity | ≤90 | ||
Elevation | M | ≤1000 | |
Solar radiation intensity | W/cm2 | 0.1 | |
Earthquake resistance | Horizontal ground acceleration | m/s2 | 0.2g |
Vertical ground acceleration | m/s2 | 0.15g | |
Sine resonance 3 cycles |
| ≥1.67 | |
Safety Factor | |||
Installation place | Indoor/outdoor | ||
Key words:
Cable branch box
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