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DFW Switched Cable Branch Box - Reliable China Factory Suppliers for Compact Power Distribution Solutions
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?
The DFW features a nominal voltage of 12kV and a rated current of 630A.
What are the foundation anti-corrosion requirements?
The foundation channel steel must undergo proper anti-corrosion treatment after fabrication.
What is the mechanical operation life of the DFW switch?
The mechanical operation time for opening and closing is rated at 2000 cycles.
What details are needed when placing an order?
You should specify the product model, standard cross-sections for incoming/outgoing lines and branch cables, and the required quantity of optional surge protectors and short-circuit fault indicators.
What waterproofing measures must be taken during installation?
The inner side of the brick wall must be sealed with a 1:3 cement mortar mix and waterproofed, and waterproof measures must be taken at the manhole entrance.
What is the lightning impulse voltage rating for this equipment?
The rated lightning impulse voltage parameter for the DFW is 75kV.