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 offers significant advantages such as compact 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 adopted.
Operating Conditions
1. Ambient temperature: Maximum temperature: +40℃, minimum temperature: -30℃;
2. Wind speed: equivalent to 34m/s (not exceeding 700Pa);
3. Humidity: Daily average relative humidity not exceeding 95%, monthly average relative humidity not exceeding 95%;
4. Seismic resistance: Horizontal acceleration not exceeding 0.4m/s², vertical acceleration not exceeding 0.15m/s². Installation site inclination: not exceeding 3°;
5. Installation environment: The surrounding air is free from obvious pollution such as corrosive gases, flammable gases, and water vapor. The installation site is free from severe vibration.
Note: If the product is ordered under conditions beyond the above specifications, please consult our company.
Main Technical Parameters
| No. | Name | Parameter |
| 1 | Rated voltage | 12kV |
| 2 | Rated current | 630A |
| 3 | Dynamic stability current | 50kA/0.3s |
| 4 | Thermal stability current | 20kA/3s |
| 5 | 1min power frequency withstand voltage | 42kV |
| 6 | 15min DC withstand voltage | 52kV |
| 7 | Lightning impulse withstand voltage | 105kV |
| 8 | Enclosure protection rating | IP33 |
