DC Power Supply Distribution Cabinet
Products Description
DC Power Supply Distribution Cabinets are primarily used to safely and accurately distribute electrical energy from rectifier systems, battery banks, or other DC power sources to various load terminals according to preset protection logic.
Application Range: From IDC data centers supporting high-density computing to remote 5G communication base stations, and even integrated photovoltaic-storage-charging microgrid systems.
Technological Evolution: Unlike traditional simple circuit breaker combinations, our products incorporate digital sensing technology, achieving a leap from "physical connection" to "intelligent control."
Manufacturing Process
| Cabinet Frame Manufacturing | Cold-rolled steel or stainless steel sheets are CNC punched, bent, and welded. Key dimensions (verticality, flatness, door gaps) are controlled within ±0.5mm using a coordinate measuring machine (CMM) inspection. Welding is performed using TIG or MIG robots, and welds are ground and inspected for flaws to ensure structural strength and appearance quality. |
| Surface Treatment | A complete pretreatment process of degreasing, phosphating, electrophoretic primer, and powder coating. Coating adhesion ≥5B (cross-cut test), hardness ≥2H pencil hardness, and impact resistance ≥50kg·cm. Colors are specified by the customer (typically RAL 7035 or RAL 7032), or heavy-duty anti-corrosion coatings for marine environments are available. |
| Busline Processing | Copper busbars undergo CNC punching, bending, deburring, tinning/silver plating, and heat-shrink insulation wrapping, all fully automated. Key lap surfaces are inspected for flatness (≤0.05mm) to ensure surface contact rather than line/point contact under high current, reducing contact resistance and long-term temperature rise. |
| Surface Treatment | Component Assembly: Circuit breakers, fuses, instruments, and terminal blocks are installed according to the process documents, and torque wrenches are used to ensure consistent pre-tightening force of fasteners. Secondary circuit wiring uses cable trays and ties for neat arrangement, with clear wire markings. 20% spare terminals and cable tray space are reserved for future modifications for the outdoor fiber optic distribution cabinet. |
| Complete Machine Testing | Before leaving the factory, the following tests are performed: ① Insulation resistance test (≥1MΩ, 1000V megohmmeter); ② Power frequency withstand voltage test (2kV/1min, or adjusted according to DC voltage level); ③ Protection function verification (overcurrent, short circuit, grounding, insulation monitoring); ④ Temperature rise test (1.1 times rated current to thermal stability); ⑤ Mechanical operation test (doors, drawers, interlocking mechanisms 500 cycles). A complete factory inspection report and certificate of conformity are provided. |
Application Advantages: Solving Industry Pain Points
In the Data Center Sector
For high-power-density rack requirements, our power distribution cabinets can support total current distribution up to $1000A, while their extremely small footprint saves valuable physical space in expensive IT server rooms.
In the Communication Facilities Sector
Considering the limited space and variable environments of outdoor cabinets, we offer high-protection DC power distribution solutions with IP55/IP65 ratings, ensuring stable voltage output even in salt spray and high-humidity environments.
In the New Energy Microgrid Sector
Perfectly integrates with lithium-ion battery energy storage systems, featuring bidirectional current monitoring capabilities and adapting to frequent charge-discharge cycle switching.
Detailed Display: Quality You Can See
1 Copper Busbar Overlap Surface Treatment
The copper busbar overlap surface is precision machined or scraped, with a surface roughness Ra≤3.2μm. Before overlapping, oil and oxide films are removed, and electrical compound grease is applied. Connecting bolts are tightened to standard torque (e.g., 31-39 N·m for M10 bolts) and marked with red torque lines for easy inspection during subsequent checks.
2 Secondary Wiring Harness Process
Secondary control wiring harnesses are pre-configured according to drawings. Wire numbers are printed using a thermal transfer printer, ensuring clear and durable characters. Wiring harness routing avoids heat-generating components (such as the thermal tripping area of circuit breakers) and is protected with nylon spiral tubing or corrugated tubing. Insulating partitions are installed at intersections between the wiring harness and primary wiring.
3 Door Panel and Sealing
A foamed polyurethane sealing strip is installed between the door panel and the Exterior Distribution Cabinet, forming a continuous sealing ring after compression to prevent dust ingress. The door hinges are heavy-duty detachable hinges, supporting a 180° opening for easy internal maintenance. The cabinet doors are equipped with a two-point or three-point locking mechanism, ensuring a uniform gap between the door panel and the cabinet body when locked.
4 Grounding Continuity
All Modular Distribution Cabinets components (door panels, side panels, top panel, mounting plate) are connected via copper braided straps or galvanized grounding jumpers to ensure continuous grounding throughout the cabinet. The bottom of the cabinet has dual grounding points, marked "PE" and "Grounding," facilitating connection to two different grounding systems (such as protective grounding and lightning protection grounding) or providing redundant connections.
contact us
We not only provide standardized products, but also have integrated engineering support capabilities from design optimization and structural customization to system integration. We welcome you to submit your project requirements to obtain a customized solution for Wall-mounted metal distribution.
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