1. Main Distribution Board (MDB) The MDB serves as the central hub for distributing electricity from the power plant to various sections of the facility. It houses components like bus bars, MCCBs (Molded Case Circuit Breakers), and support equipment to manage high-capacity loads safely. MDBs are critical for controlling power flow, preventing overloads, and ensuring reliable operation of industrial systems . 2. Sub Distribution Board (SDB) SDBs receive power from the MDB and distribute it to specific areas such as workshops, control rooms, or auxiliary systems. They simplify circuit management and allow localized control, making maintenance and fault isolation easier . 3. Meter Panels Meter panels are used to monitor electricity consumption in different sections of the plant. They include primary switches, fuses, and RCDs (Residual Current Devices) to ensure safe and accurate measurement of power usage . 4. Panel Fuse Banks and Unitized Panels These boxes provide protection for multiple circuits through fuses or breakers and are often modular for easy expansion. Unitized panels integrate multiple functions, including protection, metering, and control, in a single enclosure . 5. Transfer Switches Transfer switches are specialized distribution boxes that allow seamless switching between main power and backup generators, ensuring uninterrupted power supply during outages . 6. Specialized Distribution Boxes
Distribution boxes in power plants can also be categorized by installation type and electrical configuration:
All distribution boxes typically include:
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