Correction of concept for temporary power supply 002: The distribution box does not include the distribution cabinet!
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SHT 3556-2015 Safety Technical Specifications for Distribution Boxes Used in Temporary Electricity Supply in Petrochemical Processes. The distribution boxes referred to in these specifications are commonly known as main distribution boxes, sub-distribution boxes, and switch boxes used for temporary electricity supply; however, they do not include power distribution cabinets! ! Everyone should keep in mind that a distribution cabinet is a power distribution device located within the construction power distribution room (including separate power rooms and box-type substations), and it includes incoming line cabinets and outgoing line cabinets. The master distribution box is a floor-mounted power distribution unit located at the center of the project’s power consumption. Its incoming cable is connected to the outgoing cabinets in the construction power distribution room, or directly to the dedicated power supply for temporary use, while its outgoing cables are connected to distribution boxes or high-power electrical equipment.
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In the “SHT 3556-2015 Safety Technical Specifications for Temporary Power Distribution Boxes in Petrochemical Processes”, the term “distribution box” refers to main distribution boxes, sub-distribution boxes, and switch boxes used for temporary power supply; however, it does not include distribution cabinets. A distribution cabinet is a power distribution device installed in the construction power distribution room, including incoming and outgoing cabinets. The main distribution box is a floor-mounted power distribution device located at the center of the project’s electrical load. .
According to the SHT 3556-2015 Safety Technical Specifications for Temporary Power Distribution Boxes in Petrochemical Processes, a distribution box refers to the general term for main distribution boxes, sub-distribution boxes, and switch boxes, and does not include power distribution cabinets. Distribution cabinets are usually arranged in the construction power distribution room; they include incoming line units and outgoing line cabinets. The main distribution panel is a floor-mounted power distribution unit located at the center of the project’s power consumption, connecting to the outgoing cabinets in the construction power room or to dedicated power sources for temporary use. .
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