The New type AC, DC high voltage electroscope
Technical field
The utility model relates to a kind of high voltage electroscope, relates in particular to a kind of whether charged acousto-optic indicator type electroscopic device of AC and DC circuit of checking, and belongs to the high voltage transmission line technical field.
Background technology
Along with the Fast Construction of extra high voltage network with put into operation, power circuit and equipment interruption maintenance and hot line job are carried out rapidly.Wherein, judge that whether charged the circuit safety for the interruption maintenance operating personnel is most important, electroscope is check circuit and the whether charged most important Work tool of equipment.The AC and DC electroscope is used respectively in the electrical verification of Mu Qian Jiao ﹑ DC line, can not realize mutual use.
In view of this, the utility model provides a kind of New type AC, DC high voltage electroscope, to meet the practical application needs.
Summary of the invention
The purpose of this utility model is: for the deficiency of background technology, the utility model provides a kind of New type AC, DC high voltage electroscope, electroscope described in the utility model can be realized the whether charged purpose of sequence checking high pressure AC and DC circuit easily by blocked operation, reduced the quantity of operating personnel's carrying implement utensil, convenient applicable.
The technical scheme that the utility model adopts is: a kind of New type AC, DC high voltage electroscope, it is characterized in that, comprise switch, detection probe, insulated handle, scalable insulation rod, acoustic-optic indicator unit, detection probe is positioned at whole electroscope top, its lower acoustic-optic indicator unit that connects, lower end, acoustic-optic indicator unit is scalable insulation rod, scalable insulation rod lower end is insulated handle, switch is positioned on insulated handle, by internal connection line, with change-over circuit, is connected; The acoustic-optic indicator unit is controlled by surface-mounted integrated circuit, and surface-mounted integrated circuit is arranged in the box body of scalable insulation rod top.
New type AC, DC high voltage electroscope as above, is characterized in that, described surface-mounted integrated circuit comprises sound and light signal indicating circuit, self-checking circuit, resistance commutation circuit.
New type AC, DC high voltage electroscope as above is characterized in that: the resistance commutation circuit connects a current-limiting resistance by switch, and controls current-limiting resistance and change-over circuit cut-offs.
The beneficial effects of the utility model are: New type AC, DC high voltage electroscope of the present utility model, during electrical verification, can switch in real time by the switch of handle end, whether check AC and DC circuit is charged, saved the trouble that need to simultaneously carry two kinds of electroscopic devices, convenient, fast.
The accompanying drawing explanation
Fig. 1 is the structural representation of the New type AC, DC high voltage electroscope of the utility model embodiment.
Fig. 2 is the principle schematic of the New type AC, DC high voltage electroscope of the utility model embodiment.
Embodiment
In order to understand better the utility model, further illustrate content of the present utility model below in conjunction with embodiment, but content of the present utility model not only is confined to the following examples.Those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values are equally within the listed claims limited range of the application.
Symbol description in accompanying drawing: 1-switch, 2-detection probe, 3-insulated handle, the scalable insulation rod of 4-, 5-acoustic-optic indicator unit, 6-internal connection line.
As shown in Figure 1, the described New type AC, DC high voltage electroscope of the present embodiment comprises switch 1, detection probe 2, insulated handle 3, scalable insulation rod 4, acoustic-optic indicator unit 5.Detection probe 2 is positioned at whole electroscope top, its lower acoustic-optic indicator unit 5 that connects, 5 lower ends, acoustic-optic indicator unit are scalable insulation rod 4, scalable insulation rod 4 lower ends are insulated handle 3, switch 1 is positioned on insulated handle 3, by internal connection line 6, with change-over circuit, is connected.The circuit board that acoustic-optic indicator unit 5 is comprised of integrated circuit and electronic component is controlled, and comprises sound and light signal indicating circuit, self-checking circuit, resistance commutation circuit.Sound and light signal indicating circuit, self-checking circuit, resistance commutation circuit are positioned at scalable insulation rod 4 top box bodys.
Check is during DC line, connects down conductor and make it to be connected with earthing pole is intact, and switch 1 is placed in to " direct current " position.Press the self check button before electrical verification operation electroscope is carried out to self check, indicator should send sound and light signal clearly, if self check must not be carried out the electrical verification operation during without sound and light signal.Then the scalable insulation rod 4 that stretches, make it stretch out fully and locate.Operating personnel should be first galvanoscopicly have an electrical verification on electric position by this, prove that this electroscope performance is intact, and then construction.When check hum bar electric line or equipment, switch is placed in to " interchange " position, makes probe for electroscope near circuit, if charged, electroscope sends the sound and light alarm signal; During the check DC line, ground wire is connected with earthing pole, and switch is placed in to " direct current " position, if charged, electroscope sends the sound and light alarm signal.
These are only embodiments of the invention, be not limited to the present invention, therefore, within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.