CN202025041U - Live testing rod of high voltage switch contact resistor - Google Patents

Abstract

A kind of high-voltage switch contact resistance electrification test bar, comprises insulating bar, insulating plate, probe and reporting device, and insulating plate is fixed on the top of described insulating bar, and probe is installed at both ends of insulating plate, and described reporting device is installed on The upper part of the insulating rod; the reporting device is electrically connected with the probe. Compared with the prior art, the utility model has the advantages of simple structure, convenient use, low cost and the ability to test the contact resistance of the high-voltage switch without power failure.

Description

High voltage switch contact resistance live test rod

technical field

The utility model relates to the technical field of high-voltage switch contact resistance testing, in particular to a live test rod for high-voltage switch contact resistance.

Background technique

The military in the high-voltage substation uses high-voltage switches, such as circuit breakers and isolating switches, etc., and these high-voltage switches must be tested for contact resistance every year. This work requires two balanced bridge test lines to be connected to the terminals on both sides of the high-voltage switch. Measure the contact resistance. Since the porcelain equipment is forbidden to climb, when the maintenance personnel measure the contact resistance of the high-voltage switch, they use two six-meter fork ladders on both sides of the circuit breaker. It takes a long time, which not only affects work efficiency and work quality, but also has certain dangers. The utility model patent No. 201020151728.1 discloses a high-voltage switch contact resistance test rod, which is simple in structure and easy to use. It can measure the contact resistance of high-voltage switches without erecting or climbing a fork ladder. It has high work efficiency and good safety performance. However, in this patent, when testing the contact resistance of the high-voltage switch, it must be operated with a power failure, and two people and two such test rods are required to coordinate the work to complete the test, which is not only time-consuming and laborious, but also affects the power supply.

Utility model content

The purpose of the utility model is to provide a high-voltage switch contact resistance electrification test rod with simple structure, low cost and electrified operation for the defects of the prior art.

The technical solution is: including an insulating rod, an insulating plate, a probe and a reporting device, the insulating plate is fixed on the top of the insulating rod, probes are installed at both ends of the insulating board, and the reporting device is installed on the upper part of the insulating rod; The counter is electrically connected to the probe.

Wherein, the reporting device includes a voltage measuring circuit, a voice processing circuit, an amplifying circuit, a power supply circuit and a loudspeaker, and the voltage measuring circuit, a voice processing circuit, the amplifying circuit and the loudspeaker are connected in series in sequence, and the power supply circuit is respectively connected with the The voltage measurement circuit, the voice processing circuit and the amplifier circuit are connected; the input terminal of the voltage measurement circuit is electrically connected with the probe. The power supply circuit is a storage battery.

Compared with the prior art, the utility model has the advantages of simple structure, convenient use, low cost and the ability to test the contact resistance of the high-voltage switch without power failure.

Description of the drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is a circuit block diagram of the reporting device of an embodiment of the present invention.

Detailed ways

With reference to Fig. 1-Fig. 2, a kind of high-voltage switch contact resistance electrified test rod comprises insulating rod 1, insulating plate 2, probe 3 and reporting device 4, and the top of described insulating rod 1 is fixed with insulating plate 2, insulating plate 2 Probes 3 are installed at both ends, and the reporting device 4 is installed on the upper part of the insulating rod 1; the reporting device 4 is electrically connected with the probes 3. Wherein, the counting device 4 includes a voltage measuring circuit 41, a voice processing circuit 42, an amplifying circuit 43, a power supply circuit 45 and a loudspeaker 44, and the voltage measuring circuit 41, the voice processing circuit 42, the amplifying circuit 43 and the loudspeaker 44 are sequential connected in series, the power supply circuit 45 is respectively connected to the voltage measurement circuit 41 , the voice processing circuit 42 and the amplifier circuit 43 ; the input end of the voltage measurement circuit 41 is electrically connected to the probe 3 . The power supply circuit 45 is a storage battery.

During use, one person holds the lower part of the insulating rod 1 and touches the two probes 3 to both ends of the high-voltage switch. At this time, the voltage measurement circuit 41 will read the voltage value at both ends of the high-voltage switch. After the value is processed by the voice processing circuit 42, Send it to the amplifying circuit 43 for amplification, and finally report the number through the speaker 44, and the staff can calculate the contact resistance of the high-voltage switch through the reported voltage value. Therefore, the purpose of testing the contact resistance of the high-voltage switch without power failure is achieved.

Claims (3)

1. a kind of high-voltage switch contact resistance electrified test bar, it is characterized in that: comprise insulating bar, insulating plate, probe and counting device, described insulating bar top is fixed with insulating plate, and insulating plate two ends is equipped with probe, so The reporting device is installed on the upper part of the insulating rod; the reporting device is electrically connected with the probe. 2. The high-voltage switch contact resistance live test bar according to claim 1, characterized in that: said reporting device comprises a voltage measurement circuit, a voice processing circuit, an amplifier circuit, a power supply circuit and a loudspeaker, and said voltage measurement circuit, voice The processing circuit, the amplifying circuit and the loudspeaker are sequentially connected in series, and the power supply circuit is respectively connected with the voltage measuring circuit, the voice processing circuit and the amplifying circuit; the input terminal of the voltage measuring circuit is electrically connected with the probe. 3. The high-voltage switch contact resistance live test rod according to claim 1, characterized in that: the power supply circuit is a storage battery.

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