0102030405
China DFW Switched Cable Branch Box - Reliable Suppliers & Durable Factory Solutions for Power Outage Maintenance
Model and Definitions
DFW Technical Parameters
| No. | Items | Parameters |
| 1 | Nominal Voltage | 12kV |
| 2 | Rated Currency | 630A |
| 3 | Power Frequency Withstand Voltage (Phase to Ground) | 42kV/min |
| 4 | Lightning lmpulse Voltage | 75kV |
| 5 | Rated Breaking Current | 630A |
| 6 | Rated Short-circuit Making Current(Peak Value) | 50kA |
| 7 | Rated Short-time Withstand Current | 25kA/4S |
| 8 | Rated Peak Withstand Current | 50kA |
| 9 | Rated Peak Withstand Current | 45A |
| 10 | Rated Breaking Capacitive Current | 16A |
| 11 | Full Load Breaking Time | >100 |
| 12 | Mechanical Operation Time for Opening and Closing | 2000 |
External Schematic Diagram
Basic Structure
Technical Requirements
✓
The inner side of the brick wall is to be sealed with a 1:3 cement mortar mix and treated for waterproofing.
✓
Beam penetrations should use φ6 concrete operations.
✓
The foundation channel steel must undergo anti-corrosion treatment after fabrication.
✓
After the installation of the branch box is completed, the area around the base should be sealed with cement.
✓
Waterproof measures must be taken at the manhole entrance.
✓
Grounding electrodes should be pre-embedded in the foundation, with grounding resistance meeting the requirements set by the power department.
Ordering Instructions
✓
The product model and any special requirements from the user can provide a one-time diagram.
✓
The standard cross-sections for incoming and outgoing lines and branch cables.
✓
The quantity of optional surge protectors and short-circuit fault indicators.
Frequently Asked Questions (FAQ)
What is the nominal voltage and rated current of the DFW cable branch box?
The DFW cable branch box operates at a nominal voltage of 12kV and has a rated current of 630A.
What are the short-circuit withstand capabilities of this equipment?
The equipment has a rated short-time withstand current of 25kA for 4 seconds (25kA/4S) and a rated peak withstand current of 50kA.
What waterproofing requirements must be met during installation?
The inner side of the foundation brick wall must be sealed with a 1:3 cement mortar mix and waterproofed. Additionally, waterproof measures must be implemented at the manhole entrance.
How should the foundation and base structure be prepared?
The foundation channel steel needs anti-corrosion treatment after fabrication. After the installation of the branch box is completed, the area surrounding the base must be sealed with cement.
What grounding specifications are required?
Grounding electrodes should be pre-embedded in the foundation, and the overall grounding resistance must comply with the regulations and requirements of the power department.
What details need to be provided when placing an order?
When ordering, please provide the product model, any special requirements (for one-time diagrams), standard cross-sections for incoming/outgoing/branch cables, and the desired quantity of optional surge protectors and short-circuit fault indicators.