Backup power automatic switching check all-in-one machine

Abstract

The invention discloses a backup power automatic switching check all-in-one machine. The backup power automatic switching check all-in-one machine includes a I bus-bar voltage air switch, a II bur-bar voltage air switch and a direct-current overvoltage relay; a group of alternating-current voltage output terminals I is arranged between the I bus-bar voltage air switch and the II bur-bar voltage air switch; a group of alternating-current voltage output terminals II and a group of circuit breaker tripping position switching quantity input test terminals are arranged between the II bur-bar voltage air switch and the direct-current overvoltage relay; and one end of the direct-current overvoltage relay is provided with a group of alternating-current voltage input terminals. The backup power automatic switching check all-in-one machine of the invention is simple in structure, can be operated by a single person and is optimized in working mode. According to the backup power automatic switching check all-in-one machine, the switching quantity input of variables is completed by the relay, so that the risk of false touch-induced operation of equipment can be decreased. With the backup power automatic switching check all-in-one machine adopted, the success rate of a test can be greatly improved; the situations of the breakpoints of circuit breakers under the same protection logic can be observed simultaneously; the frequency of repeated tests can be decreased; and work efficiency can be improved.

Description

Technical field: [0001] The invention relates to the technical field of relay protection test devices, in particular to an all-in-one machine for self-injection and calibration. Background technique: [0002] The backup power automatic input device is an automatic device that can automatically and quickly put the backup power into work or switch the user to the backup power when the working power is disconnected due to a fault, so that the user will not be cut off. cast device. Since the standby automatic switching device is a public protection, it involves other operating intervals (incoming line, main transformer), and most of the backup automatic switching verification work is carried out without power failure. Therefore, the conditions (switch state) required for the self-switching inspection of the equipment cannot be actually operated, and can only be carried out through manual simulation. This leads to the following three disadvantages in the self-injection inspecti...

AI Technical Summary

Problems solved by technology

Therefore, the conditions (switch state) required for the self-switching inspection cannot be actually operated, and can only be carried out through manual simulation.

This leads to the following three disadvantages in the self-injection inspection work: (1) The test cannot be carried out by a single person; (2) The risk of the test process is high; (3) The test efficiency is low

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