1. Design Scope: The project's professional engineer is responsible for proposing the overall power supply and distribution system planning. The detailed design work is carried out by the local power supply company's design institute, while the architectural design institute handles the specific design of the power distribution system from the building's main power cabinet to the indoor household electrical systems.
2. Each functional area must be separately metered, including kindergartens, commercial outlets, property management offices, rooms with special usage requirements, and administrative areas. These areas should be configured according to their respective functions—for example, maintenance rooms require dedicated power supply.
3. For pump houses and heat exchange stations with an installed capacity of 100 kW or less, a separate power supply should be provided directly from the Bureau Verification Substation. The power receiving cabinet and distribution box should be located within the pump house and heat exchange station, and the metering unit should measure the power consumption independently. If the capacity exceeds 100 kW, an independent power transformer should be used.
4. The domestic water and fire water equipment in the pump house must have separate power distribution and metering systems to ensure accurate monitoring and control.
5. The fire alarm system, fire fans, pumps, and elevators should all be supplied with dual-circuit power cabinets (boxes) and meet the requirement for automatic transfer switches at the end. Many elevators and all types of fans can be integrated with dual-power switch cabinets, and each system should have its own separate metering unit.
6. According to Vanke Group’s strategic procurement standards, Schneider E9-K series products are used for household distribution boxes, while Shanghai Liangxin series products are used for external distribution. Centralized metering boxes also use Shanghai Liangxin series products to ensure consistency and reliability.
7. Multi-story residential buildings are equipped with individual public metering boxes for each single-family building, directly supplied by the power distribution cabinets. These include lighting for building entrance, video intercom systems, cable TV, and IP broadband. In high-rise buildings, the power is supplied through a self-transformer loop and internally metered separately. Enclosed single-car garages are equipped with meters, and a centralized meter box is installed in the public area, with power allocated per garage number for easy inspection and maintenance.
8. High-rise rooftops should consider the need for on-site electricity, such as lighting, advertising, and lifting equipment, and should include reserved distribution boxes. For buildings over 100 meters tall, power supply circuits should be reserved for aviation obstacle lights to ensure safety and compliance with regulations.
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