CN204537574U - A kind of three-phase zinc oxide lightning arrester dry run device - Google Patents
A kind of three-phase zinc oxide lightning arrester dry run device Download PDFInfo
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- CN204537574U CN204537574U CN201520028621.0U CN201520028621U CN204537574U CN 204537574 U CN204537574 U CN 204537574U CN 201520028621 U CN201520028621 U CN 201520028621U CN 204537574 U CN204537574 U CN 204537574U
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 74
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 32
- 239000010703 silicon Substances 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 abstract description 2
- 229960001296 zinc oxide Drugs 0.000 description 61
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical compound [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A kind of three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, comprising: power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load; Wherein, described power end is connected with three-phase signal generator with filter capacitor by the first transformer, silicon stack, described three-phase signal generator comprises three signal output parts, each signal output part is all connected with the second transformer, using one end of described second transformer object secondary winding as the first output terminal, the other end is as the second output terminal, and one end of described capacitive load is connected with the second transformer, and the other end is as the 3rd output terminal.The operation of power networks mode of operation of simulation three-phase zinc oxide lightning arrester, is applicable to skills training teaching, and can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment, equipment be simple, and operation is succinct, and has higher security.
Description
Technical field
The utility model relates to power equipment skills training teaching field, particularly relates to a kind of three-phase zinc oxide lightning arrester dry run device.
Background technology
Due to the nonlinear wind vibration that zinc paste is good, Zinc-Oxide Arrester is widely used in electric system.Zinc-Oxide Arrester operates in the later stage of its life of product, resistor disc deterioration causes leakage current to rise, finally cause and insulator internal discharge, when discharging serious, lightning arrester internal gas pressure and temperature sharply increase, and cause Zinc-Oxide Arrester body to explode, therefore, as an index of zinc oxide lightning arrester insulation degree, be necessary to monitor current in resistance property.In the training of zinc oxide lightning arrester block property current tester, due to the restriction of tester training venue, this training instrument can not carry out operation demonstration at high pressure scene, meanwhile, due to the singularity of this equipment use object, test after independent Zinc-Oxide Arrester is pressurizeed, the difficulty that personal security ensures is very large, and equipment both bulk, complicated operation, is unfavorable for realizing equally.
Utility model content
In view of this, the utility model embodiment provides a kind of three-phase zinc oxide lightning arrester dry run device, to solve the singularity due to this equipment use object in prior art, test after independent Zinc-Oxide Arrester is pressurizeed, the difficulty that personal security ensures is very large, and equipment both bulk, complicated operation, and the problem being unfavorable for realization.
For achieving the above object, the utility model embodiment provides following technical scheme:
A kind of three-phase zinc oxide lightning arrester dry run device, comprising: power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load; Wherein,
Described power end is connected with three-phase signal generator with filter capacitor by the first transformer, silicon stack, described three-phase signal generator comprises three signal output parts, each signal output part is all connected with the second transformer, using one end of described second transformer object secondary winding as the first output terminal, the other end is as the second output terminal, one end of described capacitive load is connected with the second transformer, and the other end is as the 3rd output terminal.
Wherein, described three-phase zinc oxide lightning arrester dry run device also comprises: fuse, described power end is connected with the first transformer by fuse.
Wherein, described three-phase zinc oxide lightning arrester dry run device also comprises: for holding the casing of described power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load.
Wherein, described three-phase zinc oxide lightning arrester dry run device also comprises: switch, described power end is connected with the first transformer by switch.
Wherein, described three-phase zinc oxide lightning arrester dry run device also comprises: panel, described switch is positioned on panel.
Wherein, described panel comprises voltage and obtains region and electric current acquisition region,
Wherein, described voltage obtains region and comprises the first voltage terminal and the second voltage terminal, and each first voltage terminal is connected with second output terminal, and each second voltage terminal is all connected with the first output terminal.
Wherein, described electric current obtains region and comprises current terminal and lower current terminal, and each upper current terminal is connected with the 3rd output terminal, and each lower current terminal is all connected with the first output terminal.
Wherein, described panel also comprises: alternating current input socket, and described alternating current input socket is connected with power end.
Wherein, described panel also comprises: ground terminal.
Based on technique scheme, the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, comprises power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load, wherein, described power end is by the first transformer, silicon stack is connected with three-phase signal generator with filter capacitor, by the first transformer, the ac voltage signal that power end receives is converted to the steady d. c. voltage signal being applicable to three-phase signal generator by silicon stack and filter capacitor, described three-phase signal generator comprises three signal output parts, each signal output part exports a phase voltage signal, each signal output part is all connected with the second transformer, using one end of described second transformer object secondary winding as the first output terminal, the other end is as the second output terminal, the magnitude of voltage of the three-phase signal exported by three-phase signal generator by the second transformer is amplified, the real work obtaining three-phase zinc oxide lightning arrester refers to, one end of described capacitive load is connected with the second transformer, the other end is as the 3rd output terminal, by regulating the numerical value of resistance and electric capacity in capacitive load, the current signal obtained from the 3rd output terminal can be made in advance from the angle that the voltage signal of the second output terminal acquisition is predetermined, thus simulate the variety classes operation of power networks mode of operation of three-phase zinc oxide lightning arrester, be applicable to skills training teaching, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment, by judging test data, also the examination to student in training process has been conducive to, equipment is simple, operation is succinct, and there is higher security.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The connection diagram of the three-phase zinc oxide lightning arrester dry run device that Fig. 1 provides for the utility model embodiment;
Another connection diagram of the three-phase zinc oxide lightning arrester dry run device that Fig. 2 provides for the utility model embodiment;
A connection diagram again of the three-phase zinc oxide lightning arrester dry run device that Fig. 3 provides for the utility model embodiment;
The structural representation of panel in the three-phase zinc oxide lightning arrester dry run device that Fig. 4 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The connection diagram of the three-phase zinc oxide lightning arrester dry run device that Fig. 1 provides for the utility model embodiment, be applicable to skills training teaching, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment, equipment is simple, operation is succinct, and has higher security; With reference to Fig. 1, this three-phase zinc oxide lightning arrester dry run device can comprise: power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700; Wherein,
Power end 100 is connected with three-phase signal generator 500 with filter capacitor 400 by the first transformer 200, silicon stack 300, by the first transformer 200, the voltage signal that the numerical value accessed by power end 100 is larger is converted to the less voltage signal being applicable to three-phase signal generator 500 of numerical value; By silicon stack 300, the ac voltage signal that power end 100 accesses is converted to d. c. voltage signal; By filter capacitor 400, output smoothing direct current signal, makes the serviceability of circuit more stable, reduces the interference of alternation pulse ripple to electronic circuit.
Optionally, power end 100 can access the electric main that voltage is 220 volts.
Optionally, the rectification circuit that silicon stack 300 forms can be bridge rectifier circuit.
Optionally, 3 filter capacitors 400 can be used in three-phase zinc oxide lightning arrester dry run device.
Three-phase signal generator 500 comprises three signal output parts, each signal output part will export the three-phase signal on a road, the signal that the signal output part of three-phase signal generator 500 can be claimed to export is respectively A phase signals, B phase signals and C phase signals, wherein, A phase signals, B phase signals and C phase signals have identical amplitude and frequency, and A phase signals, B phase signals and C phase signals phase differential are between any two 120 degree.
Each signal output part of three-phase signal generator 500 is all connected with the second transformer 600, using one end of the second transformer 600 object secondary winding as the first output terminal, the other end is as the second output terminal, the A phase signals that three-phase signal generator 500 exports is exported from second output terminal by the second transformer 600, B phase signals is exported from second output terminal by the second transformer 600, C phase signals is exported from second output terminal by the second transformer 600, A phase voltage signal by obtaining after the second transformer 600 can be recorded respectively by the first output terminal and the second output terminal, B phase voltage signal and C phase voltage signal.
Optionally, three-phase signal generator 500 can adopt the typical application circuit of EG8030+EG3012+EG1181 to combine, wherein, main chip EG8030 is a digitizing, the three-phase pure sine wave generator inverter chip carrying dead zone function of perfect in shape and function, external 16MHz crystal oscillator, high precision can be produced, the three-phase signal that distortion and harmonic wave are all very little, this chip possesses perfect sampling mechanism, current signal can be gathered, temperature signal, three-phase voltage signal, implement process, realize exporting voltage stabilizing and every defencive function, chip adopts CMOS technology, inner integrated SPWM forcing function generator, dead-time control circuit, amplitude factor multiplier, soft starting circuit.In addition, because EG8030 is inverter main control unit, by half-bridge driven chip EG3012 driving power MOSFET, small area analysis signal source is enlarged into power current source, on plate, required+15V driving power adopts DC-DC adjusting and voltage-reduction switch power supply chip EG1181 to carry out 48V step-down conversion.
Optionally; EG8030 can be set and be operated in three-phase synchronous loop pressure-stabilizing pattern; Voltage Feedback adopts three small transformers isolation samplings; simultaneously owing to being employing synchronous voltage stabilizing; the ceiling voltage that this function can limit each phase can not exceed default 10%; and when three-phase voltage serious unbalance, will turn-off protection be taked, easily realize, reliability will be high.
Optionally, the second transformer 600 can be three-phase main-frequency transformer.
Optionally, second transformer 600 can be three-winding transformer, when the second transformer 600 is three-winding transformer, one of them secondary winding is used as the Voltage Feedback of signal generator, a secondary winding directly exports as voltage, another one secondary winding is connected with capacitive load, so, using in the second transformer 600 can directly as voltage export secondary winding as object secondary winding, using one end of this object secondary winding as the first output terminal, the other end is as the second output terminal, and capacitive load 700 is connected with another secondary winding.
Optionally, the magnitude of voltage that can arrange A phase voltage signal, B phase voltage signal and the C phase voltage signal that the second output terminal exports is 57.7 volts.
One end of capacitive load 700 is connected with the second output terminal, the other end is as the 3rd output terminal, the capacitive load 700 receiving A phase signals exports A phase current signal from the 3rd output terminal, the capacitive load 700 receiving B phase signals exports B phase current signal from the 3rd output terminal, the capacitive load 700 receiving C phase signals exports C phase current signal from the 3rd output terminal, can record A phase current signal, B phase current signal and C phase current signal by obtaining after the second transformer 600 respectively by the first output terminal and the 3rd output terminal.
Wherein, capacitive load 700 refers to the load with capacitance parameter, and each load meeting voltage delay current characteristics or electric current leading voltage feature all can be described as capacitive load.
Optionally, capacitive load 700 can be that electric capacity and resistor coupled in parallel are formed.
Optionally, by regulating the numerical values recited of electric capacity and resistance in capacitive load 700, the advanced three-phase voltage signal 80 ° with exporting from the second output terminal of three-phase current signal exported from the 3rd output terminal can be made.
Optionally, by regulating the numerical values recited of electric capacity and resistance in capacitive load 700, the three-phase current signal exporting 10 milliamperes from the 3rd output terminal can also be made.
Based on technique scheme, the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, comprises power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load, wherein, described power end is by the first transformer, silicon stack is connected with three-phase signal generator with filter capacitor, by the first transformer, the ac voltage signal that power end receives is converted to the steady d. c. voltage signal being applicable to three-phase signal generator by silicon stack and filter capacitor, described three-phase signal generator comprises three signal output parts, each signal output part exports a phase voltage signal, each signal output part is all connected with the second transformer, using one end of described second transformer object secondary winding as the first output terminal, the other end is as the second output terminal, the magnitude of voltage of the three-phase signal exported by three-phase signal generator by the second transformer is amplified, the real work obtaining three-phase zinc oxide lightning arrester refers to, one end of described capacitive load is connected with the second transformer, the other end is as the 3rd output terminal, by regulating the numerical value of resistance and electric capacity in capacitive load, the current signal obtained from the 3rd output terminal can be made in advance from the angle that the voltage signal of the second output terminal acquisition is predetermined, thus simulate the variety classes operation of power networks mode of operation of three-phase zinc oxide lightning arrester, be applicable to skills training teaching, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment, by judging test data, also the examination to student in training process has been conducive to, equipment is simple, operation is succinct, and there is higher security.
Optionally, Fig. 2 shows another connection diagram of the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, with reference to Fig. 2, this three-phase zinc oxide lightning arrester dry run device can also comprise: fuse 800, and power end 100 is connected with the first transformer 200 by fuse 800.
When the connecting circuit of three-phase zinc oxide lightning arrester dry run device breaks down or is abnormal, electric current in connecting circuit will constantly increase, higher electric current may damage some important devices in connecting circuit or valuable device, also likely burn circuit and even cause fire, fuse 800 is settled in the connecting circuit of three-phase zinc oxide lightning arrester dry run device, fuse 800 is when current anomaly is elevated to certain height and temperature, will self fuse, thus cut-out circuital current, play the effect of protection three-phase zinc oxide lightning arrester dry run device circuit safe operation.
Optionally, Fig. 3 shows a connection diagram again of the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, with reference to Fig. 3, this three-phase zinc oxide lightning arrester dry run device can also comprise: switch 900, and power end 100 is connected with the first transformer 200 by switch 900.
Only have when power end 100 accesses power supply, and switch 900 is when closing, the three-phase zinc oxide lightning arrester dry run device that the utility model provides just can be started working, the three-phase zinc oxide lightning arrester dry run device provided when the utility model just operationally, cut-off switch 900, the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides will quit work.If there is no switch 900, the three-phase zinc oxide lightning arrester dry run device that the utility model provides will commence work without delay after power end accesses voltage signal, and only have when the voltage signal of power end access stops, the three-phase zinc oxide lightning arrester dry run device that the utility model provides just can normally quit work, operation comparatively bothers, and dangerous.
Optionally, the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, can also comprise: casing, for power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. in three-phase zinc oxide lightning arrester dry run device.
Power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are contained in casing, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. is made to be fixed in a casing, be convenient to centralized operation, and saving space, be convenient to store;
Simultaneously, due to the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, for teaching, because the place of teaching may convert at any time, therefore this three-phase zinc oxide lightning arrester dry run device needs to be carried at any time, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are placed in same casing, so, more can be convenient to transport.
Optionally, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. can be placed in the inside that same casing is placed in casing, because casing has shell, shell has protection and barrier effect, therefore, so can obtain power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. well to protect; And make to be positioned at power end 100, first transformer 200 of casing, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. and be all not easy to lose, the integrality of protection three-phase zinc oxide lightning arrester dry run device.
Optionally, when power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are placed in the inside for casing, a case lid can be set on casing, when the case lid of casing closes, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are blocked by the case lid of casing, are protected by case lid; When the case lid of casing is opened, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are exposed from casing, the operation that can need power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc.
Optionally, when without the need to using three-phase zinc oxide lightning arrester dry run device to impart knowledge to students, the case lid of casing can be closed, avoid power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. in casing to decline into dust, and affect the serviceability of three-phase zinc oxide lightning arrester dry run device;
Optionally, when carrying three-phase zinc oxide lightning arrester dry run device, also the case lid of casing can be closed, to avoid loss or the damage of certain or some equipment in casing, making the intact property of three-phase zinc oxide lightning arrester dry run device.
Optionally, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. can be placed in the surface of casing, power end 100, first transformer 200, silicon stack 300, filter capacitor 400, three-phase signal generator 500, second transformer 600 and capacitive load 700 etc. are placed in the surface of casing, three-phase zinc oxide lightning arrester dry run device can be made to be used at any time operating.
Optionally, capacitive load can be changed by unpacking, by the setting to resistance and capacitance values, simulating Zinc-Oxide Arrester ruuning situation under the operation conditions of Zinc-Oxide Arrester under normal circumstances and insulation degradation.
Optionally, the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides can also comprise: panel, carries out operation and operates three-phase zinc oxide lightning arrester dry run device, make simulation process simpler, convenient by counter plate.
Optionally, Fig. 4 shows the structural representation of panel 1000 in the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, and with reference to Fig. 4, this panel 1000 can comprise: voltage obtains region 10 and electric current obtains region 20, wherein,
Voltage obtains region 10 and comprises voltage terminal, and for obtaining the voltage signal that the second output terminal exports, electric current obtains region 20 and comprises current terminal, for obtaining the current signal that the 3rd output terminal exports.
Optionally, voltage terminal comprises the first voltage terminal 11 and the second voltage terminal 12, each first voltage terminal 11 is connected with second output terminal, each second voltage terminal 12 is all connected with the first output terminal, obtains by the first voltage terminal 11 and the second voltage terminal 12 voltage signal exported between the first output terminal and the second output terminal.
Optionally, voltage obtains region 10 can comprise 4 voltage terminals, wherein, 4 voltage terminals comprise 3 the first voltage terminals 11 and 1 the second voltage terminal 12,3 the first voltage terminals 11 are connected with second output terminal respectively, second voltage terminal 12 is connected with the first output terminal, is obtained the voltage signal of each second output terminal output by the electric potential difference measured respectively between the second voltage terminal 12 and each the first voltage terminal 11.
Voltage can be obtained 4 voltage terminals called after A voltage terminal, B voltage terminal, C voltage terminal and D voltage terminal respectively in region 10, wherein, A voltage terminal, B voltage terminal and C voltage terminal can be decided to be the first current terminal 11, D voltage terminal be decided to be the second voltage terminal 12.A phase voltage signal is obtained by the electric potential difference measured between D voltage terminal and A voltage terminal; B phase voltage signal is obtained by the electric potential difference measured between D voltage terminal and B voltage terminal; C phase voltage signal is obtained by the electric potential difference measured between D voltage terminal and C voltage terminal.
Optionally, current terminal comprises current terminal 21 and lower current terminal 22, each upper current terminal 21 and a lower current terminal 22 match, each upper current terminal 21 is connected with the 3rd output terminal, each lower current terminal 22 is all connected with the first output terminal, when the lower current terminal 22 phase short circuit that each upper current terminal 21 and its match, above current signal between current terminal 21 and its corresponding lower current terminal 22 can be obtained by current sensor, namely can be obtained the current signal of the 3rd output terminal by current sensor.
Optionally, electric current obtains region 20 can comprise 6 current terminals, wherein, 6 current terminals comprise 3 upper current terminals 21 and 3 lower current terminals 22,3 upper current terminals 21 can be called current terminal on current terminal on A, the upper current terminal of B and C, 3 the lower current terminals 22 corresponding respectively with current terminal on current terminal, the upper current terminal of B and C on A be called under current terminal under A, B current terminal under current terminal and C.When under current terminal on A and A during current terminal short circuit, A phase current signal can be obtained in current sensor; When under current terminal on B and B during current terminal short circuit, B phase current signal can be obtained in current sensor; When under current terminal on C and C during current terminal short circuit, C phase current signal can be obtained in current sensor.
Optionally, switch 900 can be placed on panel 1000, be convenient to the start and stop being controlled three-phase zinc oxide lightning arrester dry run device by switch 900.
Optionally, with reference to Fig. 4, in the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, panel 1000 can also comprise: alternating current input socket 30.
Alternating current input socket 30 is connected with power end 100, can provide voltage signal to power end 100 by alternating current input socket 30.
Optionally, alternating current input socket 30 can access the electric main of 220 volts.
Optionally, alternating current input socket 30 can be Three-hole socket, also can be holes socket.
Optionally, with reference to Fig. 4, in the three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, panel 1000 can also comprise: ground terminal 40, ground terminal is carried out ground connection, effectively can prevent the generation of the mishaies such as electric leakage.
Optionally, with reference to Fig. 4, the three-phase zinc oxide lightning arrester dry run device provided in order to the utility model, according to laminating actual motion state, can not placed three emulation lightning arresters 50 on the panel 1000 of three-phase zinc oxide lightning arrester dry run device.
The three-phase zinc oxide lightning arrester dry run device that the utility model embodiment provides, be applicable to skills training teaching, can student be made well to understand and grasp principle and the operative skill of this type of electrical equipment, equipment be simple, operation is succinct, and has higher security.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a three-phase zinc oxide lightning arrester dry run device, is characterized in that, comprising: power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load; Wherein,
Described power end is connected with three-phase signal generator with filter capacitor by the first transformer, silicon stack, described three-phase signal generator comprises three signal output parts, each signal output part is all connected with the second transformer, using one end of described second transformer object secondary winding as the first output terminal, the other end is as the second output terminal, one end of described capacitive load is connected with the second transformer, and the other end is as the 3rd output terminal.
2. three-phase zinc oxide lightning arrester dry run device according to claim 1, it is characterized in that, also comprise: fuse, described power end is connected with the first transformer by fuse.
3. three-phase zinc oxide lightning arrester dry run device according to claim 1, it is characterized in that, also comprise: for holding the casing of described power end, the first transformer, silicon stack, filter capacitor, three-phase signal generator, the second transformer and capacitive load.
4. three-phase zinc oxide lightning arrester dry run device according to claim 1, it is characterized in that, also comprise: switch, described power end is connected with the first transformer by switch.
5. three-phase zinc oxide lightning arrester dry run device according to claim 4, it is characterized in that, also comprise: panel, described switch is positioned on panel.
6. three-phase zinc oxide lightning arrester dry run device according to claim 5, is characterized in that, described panel comprises the electric current acquisition region that the voltage obtaining output voltage obtains region and obtains output current.
7. three-phase zinc oxide lightning arrester dry run device according to claim 6, it is characterized in that, described voltage obtains region and comprises the first voltage terminal and the second voltage terminal, each first voltage terminal is connected with second output terminal, and each second voltage terminal is all connected with the first output terminal.
8. three-phase zinc oxide lightning arrester dry run device according to claim 6, it is characterized in that, described electric current obtains region and comprises current terminal and lower current terminal, and each upper current terminal is connected with the 3rd output terminal, and each lower current terminal is all connected with the first output terminal.
9. three-phase zinc oxide lightning arrester dry run device according to claim 6, it is characterized in that, described panel also comprises: alternating current input socket, and described alternating current input socket is connected with power end.
10. three-phase zinc oxide lightning arrester dry run device according to claim 6, it is characterized in that, described panel also comprises: ground terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028621.0U CN204537574U (en) | 2015-01-15 | 2015-01-15 | A kind of three-phase zinc oxide lightning arrester dry run device |
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| CN201520028621.0U CN204537574U (en) | 2015-01-15 | 2015-01-15 | A kind of three-phase zinc oxide lightning arrester dry run device |
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| CN204537574U true CN204537574U (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628939A (en) * | 2021-08-13 | 2021-11-09 | 温州益坤电气股份有限公司 | Prevent top net overvoltage protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628939A (en) * | 2021-08-13 | 2021-11-09 | 温州益坤电气股份有限公司 | Prevent top net overvoltage protection device |
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Granted publication date: 20150805 |