Relevant regulations on dual-circuit power supply
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Modern large-scale industrial production is mostly continuous production. In order to ensure the safety of operators and production, dual-circuit power supply is used in many cases. Are there any specific regulations? I am confused: Q. Ask: o
Depending on the load level of the equipment, dual power supplies must be used for the first-level load.
Please tell me, where can I find the relevant regulations? ? ?
"Design Code for Power Supply and Distribution" GB50052-95
Generally, it is easy to achieve automatic switching using dual-channel power supply.
Design institute reference* * According to the "Code for Design of Power Supply and Distribution Systems" GB 50052-95, large chemical plants are now generally designed to have their own 110KV substation or self-contained power plant to ensure that the chemical plant achieves dual power supply and performs the same dispatch of the entire plant load. Each subordinate chemical plant is divided according to safety level or load conditions. Particularly important loads are to increase power supply reliability, add diesel generators as emergency power supplies or UPS power supplies, etc. The power supply method is determined based on the overall consideration of the design institute.
I don’t remember which book the specific specifications are. But the specific requirements are still impressive. 1. Dual-circuit power supply cannot be confused with dual power supply. The dual-circuit power supply must come from different substations (or self-provided power stations). 2. Calculation load: When designing dual-circuit power supply, each circuit should be designed with 100% operating load (primary and secondary loads) (dual power supply should be 70%), and an automatic switching device should be installed between the two circuits. 3. It is best not to use the same path for the dual power supply lines to prevent simultaneous failures. 4. Pay attention to the neutral line of the dual power supply, especially the low-voltage dual power supply, to prevent circulating current in the neutral line. The terminology is not necessarily precise, the key is that it is easy to understand! That's about it. Supplement downstairs. This post was last edited by ZJYSSF on 2009-4-14 09:05 ]