Multifunctional modular gas discharge tube testing circuit and device

Abstract

The invention discloses a multi-functional modular gas discharge tube testing circuit and device and belongs to the technical field of electrical equipment. According to the scheme, the circuit comprises a power frequency AC (Alternating Current) power source, a push button switch, a relay, a circuit breaker, a bridge rectifier, and a current limiting resistor, a charging filter capacitor, a discharge resistor, an adjustable resistor, a discharge capacitor, a loop resistor, a transfer switch and a sample clamping groove, wherein the power frequency AC power source is connected to the relay inparallel through the push button switch to form a master control loop; the discharge resistor is connected at two ends of the charging filter capacitor in parallel and independently controlled by a switch; and a discharge loop is formed by the charging filter capacitor and the discharge capacitor through the adjustable resistor. The circuit disclosed by the invention has the advantage that a discharge tube glow discharge loop, an arc discharge loop and a glow and arc combined discharge loop can be provided through the adjustment of circuit parameters; and the device has the advantages the quick mounting and dismounting of multi-loop modules can be realized and the corresponding discharge tube characteristic and service life testing can be carried out in multiple ways and in multiple occasions.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a multifunctional modular gas discharge tube test circuit and device. Background technique [0002] As a gap-type lightning protection component, the gas discharge tube has been widely used in the lightning protection of the signal system. However, lightning strikes often cause circuit overvoltage in the signal system, and the gas discharge tube will fail due to multiple discharges or long-term glow, which will cause the surge current in the signal system to fail to discharge, reducing the reliability of the signal system and security. Therefore, based on different short-circuit failure conditions, research on the arc discharge characteristics, glow discharge characteristics and arc-glow combined discharge characteristics of gas discharge tubes is crucial to the design and improvement of gas discharge tubes, and to improve the safety and reliability of signal system...

AI Technical Summary

Problems solved by technology

[0003] Existing detections for gas discharge tubes focus on performance parameters, without research on the three characteristics of gas discharge tubes, lack of multi-functional discharge circuits with three discharge characteristics detection, and taking into account batch experiments and multi-occasion tests. At present, There is a lack of modular and portable experimental devices with the above functions, which leads to problems such as low reliability of results, low efficiency, and limitations of detection occasions in the detection of gas discharge tubes.

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