Alternating-current / direct-current voltage withstand testing device for arc discharge monitoring

Abstract

The invention relates to the technical field of power supply, in particular to an arc discharge type insulating rod alternating-current voltage withstand testing device which can effectively detect the insulation condition of an insulating rod. According to the arc discharge type insulating rod alternating-current voltage withstand testing device, an open annular metal earthing electrode with elasticity is installed at the tail end of an epoxy resin insulating support, a semicircular metal channel with a discharge gap is installed at the head end of the epoxy resin insulating support to serve as a voltage applying electrode, a discharge gap is reserved between the earthing electrode and the voltage applying electrode, the head end of the insulating rod is fixed through a bolt or a bayonet lock and is tightly clamped in the semicircular metal channel of the voltage applying electrode, the tail end of the insulating rod is connected into an elastic open annular metal channel of the earthing electrode in a clamped mode, and microampere meters are connected to the output ends of the earthing electrode in series respectively. According to the arc discharge type insulating rod alternating-current voltage withstand testing device, the detection support can effectively improve work efficiency, and a detection result can be judged according to gap luminous intensity and a leakage current threshold value. The detection support can meet the requirement for insulating strength in a detection test and is convenient and flexible to use on site, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to an arc discharge type insulating rod AC withstand voltage test device which can effectively detect the insulating state of the insulating rod. Background technique [0002] At present, power supply companies in cities all over the country generally use simple voltage-resistant brackets to conduct AC withstand voltage test tests on insulating rods. The method is to use the method of winding ground wires to connect the two ends of several insulating rods in parallel with winding electrodes for pressurized detection. The detection efficiency of this method is low. , Can not effectively visually locate whether the insulation condition of the detected rod is good. [0003] At present, the AC withstand voltage test of insulating rods generally adopts simple insulating brackets to maintain insulation against the ground, and aluminum foil or bare copper wires are respectively wound ...

AI Technical Summary

Problems solved by technology

There are three problems with this detection method. First, it takes a lot of time to bind the insulating rods with aluminum foil or bare copper conductors, the work efficiency is low, and the poor contact of the electrodes is likely to cause uneven electric field.

Second: This method can only detect the total leakage current of several parallel branches but cannot detect the branch leakage current in each insulating rod

Third: This method only disputes the test results through phenomena such as breakdown, smoke, and heat. Its diagnostic methods are traditional, and human factors are likely to cause misjudgment and missed judgments.

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