Method and device for automatically detecting abnormality of capacitor tripping device

Abstract

The invention discloses a method and device automatically detecting abnormity of a capacitor tripping device (CTD). The method comprises the following steps: arranging a control circuit assembly; arranging a relay in a control circuit assembly; electrically connecting the relay to a circuit breaker at a main power supply line end; interlocking the relay and a pressing button switch; arranging an alarming circuit and a group of comparison voltage circuit; driving an indicating unit and the alarming circuit when the voltage of the CTD is lower than a set voltage value. The device comprises a box-packed main body; the control circuit assembly is fixed in the main body. The method and the device have the advantages that the voltage value can be definitely indicated; a warning function, warning contact points and an automatic detection function are provided; the electric capacity state in the CTD can be acquired; an capacity insufficient state indication and a state warning contact point are added; indicating lamps are arranged on a disc surface, so as to clearly identify and promote the functions of the CTD.

Description

【Technical field】 [0001] The present invention relates to an automatic detection method and its improved device for a capacitor tripping device, especially for a device with clear appearance indication, easy installation, easy recognition, external alarm contact, and internal automatic detection circuit, which can enhance its power supply quality A method and device for automatically detecting the abnormality of a capacitor tripping device. 【Background technique】 [0002] Capacitor Trip Device (CTD) is a very commonly used product, but its importance is often overlooked! There was an accident caused by the explosion of high-voltage CB. When the quality control personnel checked the fault record on the electronic instrument, they found a blank, and found that the special capacitor tripping device of the relay did not operate, resulting in no isolation accident of high-voltage CB, resulting in a secondary accident. . Therefore, although the components of the capacitor trippi...

AI Technical Summary

Problems solved by technology

This is ideal, and accidents often come from ideal conditions. In practice, the uninterruptible power supply system will almost fail after one or two years, but the public institution will not notice it. Usually, when there is a short-circuit accident, the high-voltage isolation device ( H.V.CB) will not trip, it is found that the uninterruptible power system cannot supply working power to the protection relay (Relay), but it is too late

[0004] But observing the conventional capacitor tripping device, it is not obvious when it is placed in the disc body

There is also no indication of the input power supply, no clear indication of the output voltage, and no indication of the relevant obvious conditions

And it cannot be shared inside and outside the disk

There is no clear indication whether the voltage value is too low, and there is no external output contact indication, alarm or connection to the central control room. There is no automatic detection function inside. When the capacitor decays due to time, it will cause the capacitor tripping device to fail, and If there is no warning, indication and warning contact device function, it will cause a serious situation where the high-voltage plate fails in the system, the trip circuit has no working power, and the accident point cannot be isolated

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