Type: Enclosed Busway
Model: CMC
Params: I. Rated Electrical Parameters
Rated Operating Voltage: AC 400V/690V
Rated Frequency: 50Hz/60Hz
Rated Current Range: 100A, 250A, 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A, 5000A
Phase System: 3-phase 3-wire, 3-phase 4-wire, 3-phase 5-wire (3P+N+PE)
Power Frequency Withstand Voltage (1min): 3750V between phases & phase to enclosure, no breakdown or flashover
Insulation Resistance: ≥10MΩ under normal condition (20℃±5℃)
Temperature Rise Limit: Joint ≤70K, Outer Housing ≤55K
Short-Time Withstand Current: 10kA, 20kA, 30kA, 50kA (0.5s/1s)
Plug-in Service Life: ≥200 times
II. Structural & Protection Parameters
Standard Unit Length: 3m per section; custom length 0.5m/1m/1.5m/2m available
IP Protection Class: Indoor IP40/IP43; Outdoor waterproof IP54/IP68
Cooling Mode: Natural air self-cooling
Housing Material: Aluminum alloy / galvanized steel sheet optional
Conductor: T2 pure copper bar with tin/silver plating on contact surface
Installation Type: Horizontal suspension, vertical stand mounting, wall bracket mounting
Accessories: Straight section, plug-in unit, elbow, tee, reducer, expansion joint, end cap
III. Service Environmental Conditions
Ambient Temperature: -10℃ ~ +40℃
Altitude: ≤2000m; derated operation required above 2000m
Relative Humidity: Daily average ≤95%, no condensation or icing (TH type for condensation & mold environment)
Pollution Degree: Class 2; Installation Category III & IV
Environment Requirement: Free of corrosive gas, flammable & explosive dust, severe vibration
Material: Housing Shell
Aluminum type: 6063-T5 aluminum alloy profile;
Steel type: hot-dip galvanized steel sheet / galvalume steel sheet.
Conductive Conductor
T2 pure copper busbar, contact surface tin-plated, silver plating optional for high current models.
Insulating Components
Polyester film, mica insulation board, flame-retardant epoxy spacer, high temperature resistant.
Fitting Seals
Joint insulation partition: epoxy board;
Expansion joint gasket: high temperature silicone rubber.
Fasteners & Connecting Parts
304 stainless steel bolts, spring & flat washers; beryllium copper spring strips for joint conduction.
Tap-off Box Housing
Cold rolled steel with electrostatic spraying / aluminum alloy; neutral & earth bars inside are tin-plated T2 copper.
Applicable Industry: High-Rise Commercial Buildings
Multi-Story Industrial Facilities
Residential Complexes
Manufacturing Plants
Power Distribution Rooms
Electrical Substations
Infrastructure and Utility Projects
