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Huatuo groupKeep improving and focus on quality
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Huatuo groupKeep improving and focus on quality
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DFW outdoor 0.4kV low voltage cable tap box
Product Details
Product overview
DFW series 0.4KV low-voltage cable branch box, mainly used in the public power grid, according to the distribution network distribution and user requirements, according to a variety of sub-line mode, box type and installation method, so that users in the flexible scheme easy to choose. In the construction and transformation of the national city network, it is a support product to replace the overhead line. It is widely used in low-voltage power transmission and distribution systems with three-phase AC 380/220V and rated current below 1250A, such as power transformation and distribution stations, industrial and mining enterprises, both sides of streets, garden residential quarters, high-rise buildings, airports, construction and renovation projects, etc., as a complete set of stereotyped equipment for distributing electric energy to other users or equipment with cables.
Model meaning
|
DFW |
0.4 |
□ |
□ |
□ |
|
|
LV cable branch box |
Rated voltage (kV) |
Incoming current (A) |
Outlet current (A) |
Number of incoming lines |
Outlet number |
Working conditions
Altitude: ≤ 2000 m;
High ambient temperature: 45°C, low ambient temperature:-25°C;
Sunshine intensity: 0.1W/cm2 (wind speed: 0.5 m/s), large daily temperature difference: 25K;
Indoor relative humidity: daily average <95%, monthly average <90%;
High wind speed: 35 m/s (Note: wind speed refers to the lOmin average wind speed at a height of 10m from the ground);
Load: 10mm ice cover and 17.5 m/s wind speed at the same time;
Earthquake resistance: ground horizontal acceleration 0.2g; Vertical acceleration O.lg acts simultaneously. The resonance, sine and beat wave test methods shall be adopted; the vibration shall be excited for 5 times, with 5 waves for each time, with an interval of 2s for each time. Safety factor is not less than 1.67;
Rated frequency of the system: 50Hz.
Technical parameters
|
Project Name |
Unit |
Technical parameters |
|
Rated voltage |
kV |
0.4 |
|
Rated current |
A |
630 |
|
Rated short-time withstand current |
kA |
20/3 |
|
Rated peak withstand current |
kA |
50 |
|
DC withstand voltage (15min) |
kV |
52 |
|
5min power frequency withstand voltage |
kV |
45 |
|
Lightning impulse withstand voltage |
kV |
105 |
|
Partial discharge |
PC/kV |
<10/15 |
|
Loop resistance |
μΩ |
≤ 4 |
|
Protection level |
IP44 |
|
|
Use ambient temperature |
°C |
-50 to 60 |
|
Applicable cable section |
mm2 |
25-400 |
Key words:
DFW outdoor 0.4kV low voltage cable tap box
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