Presence of an Uninterruptible Power Supply (UPS): Difference between revisions
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Main characteristics to be considered for implementing a UPS: | Main characteristics to be considered for implementing a UPS: | ||
* Sensitivity of loads to power interruptions (see § 3.9 for definition), | * Sensitivity of loads to power interruptions (see § 3.9 for definition), | ||
* Sensitivity of loads to disturbances (see § 3.10 for definition). | * Sensitivity of loads to disturbances (see § 3.10 for definition). | ||
The presence of a UPS unit is essential if and only if no failure is acceptable. | The presence of a UPS unit is essential if and only if no failure is acceptable. | ||
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Revision as of 22:30, 17 November 2016
The electrical power from a UPS is supplied from a storage unit: batteries or inertia wheel. This system prevent any power failure. The back-up time of the system is limited: from several minutes to several hours.
The simultaneous presence of a back-up generator and a UPS unit is used for permanently supply loads for which no failure is acceptable (Fig. D19). The back-up time of the battery must be compatible with the maximum time for the generator to start up and take over the load supply.
A UPS unit is also used to supply loads that are sensitive to power quality (generating a “clean” voltage that is independent of the network).
Main characteristics to be considered for implementing a UPS:
- Sensitivity of loads to power interruptions (see § 3.9 for definition),
- Sensitivity of loads to disturbances (see § 3.10 for definition).
The presence of a UPS unit is essential if and only if no failure is acceptable.
Fig. D19: Example of connection for a UPS
ru:Использование источников бесперебойного питания (ИБП) zh:不间断电源 (UPS) 的设置
