Overview
The European-style cable branch box is a cable-related engineering device widely used in power distribution networks in recent years. Its main features include double-door opening and the use of wall bushings as connecting busbars. It has significant advantages such as small length, clear cable arrangement, and no need for large-span crossing of three-core cables. The cable joints used comply with the DIN47636 standard. Generally, bolt-fixed cable joints with a rated current of 630A are used.
Operating Conditions
1. Ambient temperature: Maximum temperature: +40℃, minimum temperature: -30℃;
2. Wind speed: equivalent to 34m/s (not greater than 700Pa);
3. Humidity: Average daily relative humidity not greater than 95%, average monthly relative humidity not greater than 95%;
4. Seismic resistance: Horizontal acceleration not greater than 0.4m/s², vertical acceleration not greater than 0.15m/s², installation site inclination: not greater than 3°;
5. Installation environment: The surrounding air is not significantly polluted by corrosive or flammable gases, water vapor, etc., and the installation site is free from severe vibration.
Note: If the product is ordered under conditions exceeding the above specifications, please consult our company.
Main Technical Parameters
| No. | Name | Parameter |
| 1 | Rated voltage | 35kV |
| 2 | Rated current | 630A |
| 3 | Dynamic stable current | 50kA/0.3s |
| 4 | Thermal stable current | 20kA/3s |
| 5 | 1min power frequency withstand voltage | 80kV |
| 6 | 15min DC withstand voltage | 125kV |
| 7 | Lightning impulse withstand voltage | 185kV |
| 8 | Enclosure protection rating | IP33 |
