Enclosed Busway

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