Specifications for Power Supply Load Classification and Power Supply Measures
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The power supply for secondary load equipment should, depending on the unit’s power supply conditions and the importance of the loads, be provided in one of the following ways: ① Dual-power (or dual-circuit) supply, with automatic switching at the lowest-level distribution panel. ②Dual-power (or dual-circuit) supply is automatically switched to the appropriate distribution point, and then delivered via dedicated lines to the electrical equipment or its control devices. ③For small-capacity loads that are distributed and require reliable dedicated single-circuit power supply, such as emergency lighting, it is possible to use one mains power supply combined with EPS, or to employ one power source along with the battery (battery pack) built into the equipment, with automatic switching taking place at the device itself. https://zhuanlan.zhihu.com/p/362028628, where exactly do these contents come from – that standard or some interpretation of the regulations? I need some advice from experts!
The Code for Fire Protection Design of Buildings GB50016 specifies the power supply requirements for fire protection electrical equipment; these requirements include the use of dedicated power supply circuits for devices such as fire pumps, fire elevators, and fire control rooms, with automatic switching devices installed at the lowest level of distribution panels. The \"Code for Electrical Design of Civil Buildings\" JGJ 16-2008 (or any updated version) specifies in detail the power supply requirements and design standards for various electrical equipment, including the power supply methods for equipment classified as secondary load devices, as well as those for emergency lighting.
This content is based on GB50052. There are also more detailed requirements in SH3038