About load levels
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This post was last edited by hesonchang214 on 2021-4-29 10:44. The book says that the first-level load requires dual power supplies. Damage to one path will not affect the other. So, is this dual power supply pulled from the power supply bureau through two transformers or two cables from one transformer? What are the regulations. In addition, can the primary load be powered by the cables of the power supply bureau and the backup diesel generator? Is the load standard?
Requirements for power supply for primary load: It is required that there should be two power supplies. When one power supply fails, the other power supply will not be damaged at the same time. For particularly important loads among the primary loads, in addition to the above two power supplies, an additional emergency power supply is also required. Your situation should not meet the standards. The generator should be an emergency power source and not a common power supply. Therefore, it does not meet the first-level load standard.
Our current approach is to supply power to one power supply bureau and one UPS. Can the diesel generator carry a primary load? When the power supply bureau line fails, the UPS is not damaged, and then the generator is started. Is it possible? ?
I disagree with the second floor's opinion. The first-level load requires dual power supply. Diesel generators can be used as the second power source, as long as the startup time of the diesel generators meets the switching time requirements after a power outage. Dual power supplies can be used one for standby, or they can work at the same time. For details, please refer to the provisions of GB50052-2009
Personally think: There is no need to consider the upper-level issues of dual power supply. You only need to consider the operation mode and needs of the dual power supply client. For users, their own generator can be used as an emergency power supply, but it is not necessary or possible to use it as a dual power supply point. Whether the upper level is a generator set is not within the user's consideration.
Regardless of the superior power supply, can my UPS + generator be used as the second power supply to carry the primary load?
One way is the mains power supply, and the other is the generator set as a backup power supply. It is absolutely fine. I will upload the specifications.：