Product Overview
The Fixed Power Distribution Cabinet is a reliable low-voltage electrical distribution solution designed to safely distribute, control, and protect electrical power in industrial, commercial, and infrastructure applications.
Product Structure
Enclosure Frame
High-strength cold-rolled steel sheet frame (1.5mm–2.5mm thickness) providing rigid load-bearing capacity.
Busbar Chamber
Top or rear-mounted main busbar system designed for optimal heat dissipation and short-circuit electrodynamic resistance.
Cable Compartment
Spacious entry zones supporting both top and bottom incoming/outgoing cable gland plates.
Instrument Door
Isolated compartment housing digital power meters, PLC modules, pushbuttons, and pilot lights.
How It Works
Power Input: High-voltage/low-voltage main feed connects directly to the incomer protection device (Air Circuit Breaker or Molded Case Circuit Breaker).
Power Distribution: Current flows from the main switch across high-conductivity copper or aluminum main busbars running horizontally and vertically through the cabinet structure.
Branch Protection: Individual outgoing branch circuit breakers branch off the main busbars, delivering calibrated power to dedicated sub-panels, motor control centers, or machinery loads.
Fault Mitigation: Integrated thermal-magnetic or electronic trip units instantly interrupt circuit flow during overload, phase loss, or short-circuit events, preventing fire hazards and electrical damage.
Technical Specifications
|
Parameter |
Specification |
|
Product Type |
Fixed Low-Voltage Power Distribution Cabinet |
|
Rated Operational Voltage (\(U_e\)) |
AC 380V / 400V / 415V / 690V |
|
Rated Insulation Voltage (\(U_i\)) |
AC 660V – 1000V |
|
Rated Frequency |
50Hz / 60Hz |
|
Rated Current (\(I_n\)) |
Up to 4000A |
|
Rated Short-Time Withstand Current (\(I_{cw}\)) |
50kA / 65kA / 80kA (1 second) |
|
Protection Degree (IP Rating) |
IP30, IP40, IP54, IP55 (Customizable) |
|
Form of Segregation |
Form 1, Form 2b, Form 3b, Form 4a/4b |
|
Busbar System |
3-Phase 4-Wire (3P4W) / 3-Phase 5-Wire (3P5W) |
|
Busbar Material |
High-Purity T2 Copper or Electrical Aluminum |
|
Cabinet Material |
Cold-Rolled Steel / Galvanized Steel / Stainless Steel |
|
Surface Finish |
Epoxy Electrostatic Powder Coating (RAL 7032 / RAL 7035 standard) |
|
Installation Type |
Floor-Mounted / Indoor Installation |
|
Ambient Operating Temperature |
-15°C to +55°C |
|
Altitude Rating |
≤ 2000m (Higher altitude design upon request) |
Optional Components
To tailor the cabinet for advanced industrial automation or smart power management, the following optional modules can be integrated:
Smart Metering
Multi-function digital power meters with Modbus RS485 / Ethernet communication ports.
Surge Protection Devices (SPD)
Class I & Class II lightning and surge protection modules.
Automatic Transfer Switch (ATS)
Dual-power source switching for uninterruptible power supply.
Power Quality Solutions
Active Harmonic Filters (AHF) or Capacitor Banks for power factor correction.
PLC & Automation
Integrated Programmable Logic Controllers (Siemens, Schneider Electric, Omron) for centralized remote management.
Climate Control
Internal anti-condensation heaters, thermostats, and IP55 cooling fans.
Applications
Industrial Manufacturing: Automobile plants, assembly lines, chemical processing, textile mills, and steel manufacturing.
Commercial Buildings: High-rise office towers, shopping centers, hotels, hospitals, and educational campuses.
Power & Utilities: Thermal/hydroelectric power plants, solar farm step-down substations, and local utility distribution grids.
Data Centers & Telecom: Uninterruptible power feed distribution for servers, cooling plants, and back-up generators.
Municipal Infrastructure: Sewage/water treatment plants, pumping stations, street lighting networks, and tunnels.
Heavy Industry & Mining: Underground mining operations, cement plants, metallurgical complexes, and oil refineries.
Transportation Systems: Airport terminals, railway traction substations, seaports, and logistics hubs.
Custom Manufacturing
We offer end-to-end custom engineering (OEM / ODM) to adapt every switchgear assembly to your precise project drawing set and local grid standards.
Customization Options:
Structural Dimensions: Custom height, width, and depth to fit limited room footprints.
Component Brand Selection: Mix-and-match global component brands (Schneider Electric, ABB, Siemens, Eaton, Mitsubishi, LS Electric, Chint, Delixi).
Busbar Tailoring: Sizing, plating (tin/silver), and custom short-circuit rating reinforcement.
Custom Color & Labeling: Custom RAL powder coating colors, laser-engraved nameplates, and customer branding.
Wiring & Schematics: Fully customized single-line diagrams (SLD) and control schematics.
Manufacturing Process
Engineering Review
Detailed single-line diagram (SLD) review and CAD model sign-off.
Sheet Metal Fabrication
Precision CNC laser cutting, punching, and computer-controlled bending.
Surface Treatment
Multi-stage degreasing, phosphating, and electrostatic epoxy powder spraying.
Busbar & Frame Assembly
Precision CNC busbar bending, punching, and high-torque bolted installation.
Component Wiring
Standardized color-coded wiring, crimping, and clear wire sleeve marking.
Factory Acceptance Testing (FAT)
Comprehensive pre-shipment electrical and mechanical validation.
Quality Control
Every cabinet undergoes rigorous quality checks under our ISO certified control system before leaving the factory:
Raw Material Inspection
Verification of sheet steel thickness, copper purity, and powder coating quality.
Mechanical & Dimensional Checks
Structural alignment, door seal integrity, lock mechanics, and paint thickness testing.
Torque Verification
Calibrated torque wrench checks on all busbar and breaker terminal connections.
Dielectric & Insulation Resistance Testing
High-voltage withstand tests to verify electrical isolation.
Functional Circuit Testing
Interlock validation, relay testing, metering setup, and live control logic simulation.
Certifications
ISO 9001: Quality Management System Standard
ISO 14001: Environmental Management System
ISO 45001: Occupational Health and Safety Management
CCC Certification: China Compulsory Certification for Low Voltage Electrical Assemblies
IEC 61439 Compliance: Standard for low-voltage switchgear and controlgear assemblies
Third-Party Test Reports: Available upon request (SGS, TUV, Intertek)
Packaging & Shipping
To ensure damage-free international transport across long ocean and road voyages, all products are packed using export-grade standards:
Primary Protection
Heavy-duty polyethylene film wrap for dust and moisture protection.
Corner & Edge Defense
High-density foam protection around frame corners and fragile meters.
Outer Enclosure
Fully enclosed fumigation-free plywood crates compliant with ISPM-15 standards.
Shipping Methods
FCL (Full Container Load), LCL (Less than Container Load), and Air Freight for urgent spares.
FAQ
