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DFW Switched Cable Branch Box - Reliable Power Solutions from China Suppliers & Factory
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
Q
What is the nominal voltage and rated current of the DFW cable branch box?
The nominal voltage is 12kV, and the rated current is 630A.
Q
What are the waterproofing requirements for the foundation installation?
The inner side of the brick wall must be sealed with a 1:3 cement mortar mix and waterproofed. Additionally, waterproof measures must be taken at the manhole entrance, and the area around the base should be sealed with cement after installation.
Q
What is the mechanical operation life of this equipment?
The mechanical operation time for opening and closing is rated at 2000 times.
Q
What information should be provided when placing an order?
You should specify the product model, any special user requirements, the standard cross-sections for incoming/outgoing lines and branch cables, and the required quantity of optional surge protectors and short-circuit fault indicators.
Q
What are the grounding requirements for the DFW installation?
Grounding electrodes must be pre-embedded in the foundation, and the grounding resistance must meet the specific requirements set by the power department.
Q
What are the rated short-circuit making and short-time withstand currents?
The rated short-circuit making current (peak value) is 50kA, and the rated short-time withstand current is 25kA/4S.