Wiring circuit for UPS bypass standby power supply

Abstract

The invention discloses a wiring circuit for a UPS bypass standby power supply. The wiring circuit comprises a first UPS, a second UPS, a main circuit power supply line and a standby power supply line, wherein the main circuit power supply line and the bypass power supply line supply power to the first UPS and the second UPS respectively. First UPS output and second UPS output form UPS parallel connection output sequentially through parallel connection of a first UPS output connection indicating lamp and a second UPS output connection indicating lamp and through parallel connection of a first UPS output connection breaker and a second UPS output connection breaker. The UPS parallel connection output supplies power to a load. A manual bypass input circuit is connected with a second UPS bypass power supply. A manual bypass output circuit is connected with the UPS parallel connection output. A manual bypass connection breaker is arranged between the manual bypass input circuit and the manual bypass output circuit. According to the wiring circuit, a UPS power supply output circuit is connected with a mains supply line, and therefore two power supply modes are effectively combined, uninterruptible power supply between the UPSs and the mains supply is achieved, and electric power supply can be switched and kept standby between the circuits of the two power supply modes.

Description

technical field [0001] The invention belongs to a circuit device for power supply or distribution, in particular to a wiring circuit for a UPS bypass backup power supply. Background technique [0002] In the power supply system, the power supply system that maintains the normal operation of key equipment must have continuity, stability and reliability, and always ensure the uninterrupted supply of power. [0003] The power supply system is composed of mains power supply and UPS (UPS-Uninterruptible Power Supplies) power supply. In the test system of key equipment, long-term reliability tests are required. During this period, the strong support of the power supply system is required, especially the UPS uninterruptible power supply. It plays an extremely important role in the whole system. It provides long-term uninterrupted power supply for many key and vital parts to meet the requirements of the system. Its safe and stable operation is the guarantee of the safety of the whol...

AI Technical Summary

Problems solved by technology

[0004] However, in the actual use process, it is found that the UPS is not absolutely reliable, and it also needs regular maintenance work, and there will also be shutdowns due to failures. In the case of long-term power interruptions, the energy of the battery will also be exhausted and shutdowns will occur. During the assessment process, it is inevitable to need to replace the UPS, etc.

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