CN209690445U - A kind of lightning current percussion mechanism - Google Patents
A kind of lightning current percussion mechanism Download PDFInfo
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- CN209690445U CN209690445U CN201822050187.2U CN201822050187U CN209690445U CN 209690445 U CN209690445 U CN 209690445U CN 201822050187 U CN201822050187 U CN 201822050187U CN 209690445 U CN209690445 U CN 209690445U
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Abstract
The utility model discloses a kind of lightning current percussion mechanisms, including function button module, PLC controller, charging module, energy-storage module, harmonic module, discharge module and indicator light；PLC controller includes setting signal input terminal, discharge signal output end and charging signals output end, and discharge module includes discharge current input terminal, discharge signal input terminal and discharge end；Setting signal input terminal is connect with function button module; the connection of the input terminal of charging signals output end and charging module; the output end of charging module is connect with energy-storage module; the connection of the discharge current input terminal of energy-storage module and discharge module; energy-storage module is connect with harmonic module; for the discharge end of discharge module for connecting Surge Protector, indicator light is connected in parallel to the both ends of Surge Protector.The utility model embodiment can rapidly and accurately filter out Surge Protector against regulation, intuitive quick, and reduce volume, reduce costs.
Description
Technical field
The utility model relates to power electronics field more particularly to a kind of lightning current percussion mechanisms.
Background technique
Surge Protector (Surge Protective Device, SPD), is also lightning protection device, is that one kind sets for various electronics
Standby, instrument and meter and communication line provide the electronic device of security protection.When in the electric loop or communication line because external world
Interference when generating peak current or voltage suddenly, shunting can be connected in Surge Protector in a very short period of time, to avoid
Damage of the surge to other equipment in circuit.
In the codes and standards such as GB18802.1-2012, IEC61643-1, UL1449, Surge Protector has to pass through thunder and lightning electricity
Stream impact generates the lightning current wave of a 8/20 μ s to Surge Protector using lightning current percussion mechanism to be tested
Carry out lightning impulse test.
Current lightning current percussion mechanism is because control device is relatively more, and volume is larger, higher cost, in addition, current
Lightning current percussion mechanism cannot allow people to be intuitive to see when being impacted by lightning current, whether Surge Protector works
The variation of generation, so that Surge Protector against regulation cannot be filtered out quickly.
Summary of the invention
Technical problem to be solved by the utility model is to provide a kind of lightning current percussion mechanisms, can be quickly quasi-
Surge Protector against regulation really is filtered out, it is intuitive quick, and reduce volume, it reduces costs.
In order to solve the above-mentioned technical problem, the utility model provides a kind of lightning current percussion mechanism, including function is pressed
Key module, PLC controller, charging module, energy-storage module, harmonic module, discharge module and indicator light；
The PLC controller includes setting signal input terminal, discharge signal output end and charging signals output end, described to put
Electric module includes discharge current input terminal, discharge signal input terminal and discharge end；
The setting signal input terminal is connect with the function button module, the discharge signal output end and the electric discharge
Signal input part connection, the charging signals output end connect with the input terminal of the charging module, the charging module it is defeated
Outlet is connect with the energy-storage module, and the energy-storage module is connect with the discharge current input terminal of the discharge module, the storage
Energy module is connect with the harmonic module, and the discharge end of the discharge module is for connecting Surge Protector, and the indicator light is simultaneously
Connection is connected to the both ends of the Surge Protector.
Further, the PLC controller further includes ground signalling output end, and the lightning current percussion mechanism further includes
Earthing module, the earthing module include the first intermediate relay, motor push rod earthing or grounding means and ground state indicator light；
The ground signalling output end is connect with the coil of first intermediate relay, first intermediate relay
Switch is connect with the neutral earthing compensator of the motor push rod earthing or grounding means, and the first of the earthing switch of the motor push rod earthing or grounding means
End is connected to exchange firewire, and the second end of the earthing switch of the motor push rod earthing or grounding means and the ground state indicate
The first end of lamp connects, and the second end of the ground state indicator light is connected to AC neutral line.
Further, the lightning current percussion mechanism further includes voltage sampling unit and measurement display unit, the electricity
Pressing sampling unit includes sampling end, ground terminal and sampled signal output end；
The sampling end is connect with the energy-storage module, and the sampled signal output end and the measurement display unit connect
It connects.
Further, the voltage sampling unit includes first resistor and second resistance；
The first end of the first resistor is connect with the sampling end, and the second end of the first resistor passes through described second
Resistance is connect with the ground terminal, and the second end of the first resistor is connect with the sampled signal output end.
Further, the function button module includes remote control unit and remote controler,
The remote control unit is connect with the PLC controller, and the remote controler and remote control unit wireless communication connect.
Further, the discharge module includes the second intermediate relay and electric discharge trigger ball；
The coil of second intermediate relay is connect with the discharge signal input terminal, second intermediate relay
It switchs and is connect with the coil of the electric discharge trigger ball, the first electrode of the electric discharge trigger ball and the discharge current input terminal connect
It connects, the second electrode of the electric discharge trigger ball is connect with the discharge end.
Further, the charging module include third intermediate relay, A.C. contactor, pressure regulation unit, 3rd resistor,
Boost isolating transformer and high voltage silicon rectifier stack；
The coil of the third intermediate relay is connect with the input terminal of the charging module, the third intermediate relay
Switch connect with the coil of the A.C. contactor, switch and the input terminal of the pressure regulation unit of the A.C. contactor connect
It connects, the output end of the pressure regulation unit is connect by the 3rd resistor with the armature winding of the boosting isolating transformer, institute
The first end for stating the secondary windings of boosting isolating transformer is connect with the anode of the high voltage silicon rectifier stack, the cathode of the high voltage silicon rectifier stack
It is connect with the output end of the charging module.
Further, the lightning current percussion mechanism further includes charging instruction module；
The charging instruction module is connect with the switch of the A.C. contactor.
Further, the energy-storage module includes capacitor；
The first end of the capacitor is connect with the cathode of the high voltage silicon rectifier stack, the second end of the capacitor and it is described boosting every
The second end of secondary windings from transformer connects.
Further, the function button module includes the first charging interlock switch and the second charging interlock switch；
The line that the switch of the third intermediate relay passes through the first charging interlock switch and the A.C. contactor
The switch of circle connection, the A.C. contactor is connected by the input terminal of the second charging interlock switch and the pressure regulation unit
It connects.
Lightning current percussion mechanism provided by the utility model is pressed when carrying out lightning current shock-testing by function
Key module sets charging control signal and exports to the setting signal input terminal of PLC controller, and PLC controller is according to charge control
Signal exports charging signals to charging module, and charging module is energy-storage module charging, harmonic module pair according to the charging signals
Charging voltage carries out harmonic to generate the lightning current wave of certain voltage value, and the lightning current wave is sent to and puts by energy-storage module
The discharge current input terminal of electric module, after charging, PLC controller is sent to the discharge signal input terminal of discharge module discharges
Signal, discharge module, which receives, applies the lightning current wave to Surge Protector by discharge end after discharge signal, realizes to wave
The shock-testing of surge protector, when Surge Protector works, indicator light is intact, when Surge Protector is against regulation
When failure, indicator light is burst, and can intuitively see a protective effect of the qualified Surge Protector to equipment, so as to
Surge Protector against regulation is rapidly and accurately filtered out, it is intuitive quick, the output at control point is done using PLC controller
And input, reduce many control devices, reduce volume, reduces costs.
Detailed description of the invention
Fig. 1 is the circuit block diagram of lightning current percussion mechanism provided by the utility model；
Fig. 2 is the circuit theory of one embodiment of the earthing module of lightning current percussion mechanism provided by the utility model
Figure；
Fig. 3 is the circuit theory of one embodiment of the discharge module of lightning current percussion mechanism provided by the utility model
Figure；
Fig. 4 is the circuit theory of one embodiment of the charging module of lightning current percussion mechanism provided by the utility model
Figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It is the circuit block diagram of lightning current percussion mechanism provided by the utility model referring to Fig. 1, Fig. 1.
The utility model embodiment provides a kind of lightning current percussion mechanism, including function button module 1, PLC controller
2, charging module 3, energy-storage module 4, harmonic module 5, discharge module 6 and indicator light HL；
PLC controller 2 includes setting signal input terminal a, discharge signal output end Y2 and charging signals output end Y1, electric discharge
Module 6 includes discharge current input terminal c, discharge signal input terminal b and discharge end d；
Setting signal input terminal a is connect with function button module 1, discharge signal output end Y2 and discharge signal input terminal b
Connection, charging signals output end Y1 are connect with the input terminal of charging module 3, and the output end and energy-storage module 4 of charging module 3 connect
It connects, energy-storage module 4 is connect with the discharge current input terminal c of discharge module 6, and energy-storage module 4 is connect with harmonic module 5, and discharge mould
For the discharge end d of block 6 for connecting Surge Protector, indicator light HL is connected in parallel to the both ends of Surge Protector.
In the specific implementation, charging control signal is set by function button module 1 and exports setting to PLC controller 2
Determine signal input part a, PLC controller 2 exports charging signals to charging module 3,3 basis of charging module according to charging control signal
The charging signals are the charging of energy-storage module 4, and harmonic module 5 carries out harmonic to charging voltage to generate the thunder and lightning of certain voltage value
Current wave, the lightning current wave is sent to the discharge current input terminal c of discharge module 6 by energy-storage module 4, after charging,
PLC controller 2 sends discharge signal to the discharge signal input terminal b of discharge module 6, and discharge module 6 leads to after receiving discharge signal
Overdischarge end d applies the lightning current wave to Surge Protector, realizes the shock-testing to Surge Protector, when surge is protected
For shield device when working, indicator light HL is intact, and when Surge Protector failure against regulation, indicator light HL is burst, can be with
Intuitively see a protective effect of the qualified Surge Protector to equipment, is not met so as to rapidly and accurately filter out
Defined Surge Protector, it is intuitive quick, the output and input at control point are done using PLC controller 2, reduce many controllers
Part reduces volume, reduces costs.
It should be noted that can also intuitively be observed by setting indicator light HL when carrying out lightning current shock-testing not
Add Surge Protector to a kind of destruction of equipment and plus after Surge Protector to a protective effect of equipment.Indicator light HL can
To use incandescent lamp bulb, when installing Surge Protector, lightning impulse current impact is carried out, it can clearly be seen that we are used as
The incandescent lamp bulb of test product is intact, after we dismantle Surge Protector 3, then carries out lightning current impact, can understand
Ground sees that incandescent lamp bulb can be burst completely, easy to operate, result is clearly understandable.
Wherein, charging signals can not only be set by function button module 1, discharge signal can also be set, work as thunder and lightning
When rush of current test needs to interrupt because of cause specific, charging is not yet completed, and PLC controller 2 is not yet put to the transmission of discharge module 6
Electric signal, discharge module 6 do not discharge, and the energy that energy-storage module 4 stores can bring security risk, therefore pass through function button module
1 setting discharge signal, PLC controller 2 control discharge module 6 according to the discharge signal and discharge, and improve safety.
Further, lightning current percussion mechanism further includes voltage sampling unit 8 and measurement display unit 9, voltage sample
Unit 8 includes sampling end e, ground terminal GND and sampled signal Ausgang；
Sampling end e is connect with energy-storage module 4, and sampled signal Ausgang is connect with measurement display unit 9.
It should be noted that acquiring the charging voltage of energy-storage module 4 in real time by voltage sampling unit 8, and pass through measurement
Display unit 9 is shown.
Further, voltage sampling unit 7 includes first resistor R1 and second resistance R2；
The first end of first resistor R1 is connect with sampling end e, and the second end of first resistor R1 passes through second resistance R2 and connects
Ground terminal GND connection, the second end of first resistor R1 are connect with sampled signal Ausgang.Wherein, first resistor R1 and second resistance
R2 carries out partial pressure sampling to the charging voltage of energy-storage module 4.
Further, function button module 1 includes remote control unit 102 and remote controler 101,
Remote control unit 102 is connect with PLC controller 2, and remote controler 101 and the wireless communication of remote control unit 102 connect.Wherein,
When carrying out charging signals and discharge signal setting, remote input can be carried out by remote controler 101, it is easy to operate.
Referring to fig. 2, be lightning current percussion mechanism provided by the utility model earthing module one embodiment electricity
Road schematic diagram.As depicted in figs. 1 and 2, PLC controller 2 further includes ground signalling output end Y0, and lightning current percussion mechanism also wraps
Earthing module 7 is included, earthing module 7 includes the first intermediate relay ZJ 1, motor push rod earthing or grounding means LA and ground state indicator light
HL1；
Ground signalling output end Y0 is connect with the coil of the first intermediate relay ZJ 1, and the first intermediate relay ZJ 1 is opened
Pass is connect with the neutral earthing compensator LA1 of motor push rod earthing or grounding means LA, and the first of the earthing switch LA3 of motor push rod earthing or grounding means LA
End is connected to the second end and ground state indicator light HL1 of exchange firewire L, the earthing switch LA3 of motor push rod earthing or grounding means LA
First end connection, the second end of ground state indicator light HL1 is connected to AC neutral line N.
Wherein, the work process of earthing module 7 is as follows: when earthing module receives the ground signalling output of PLC controller 2
When the ground signalling for holding Y0 to send, the neutral earthing compensator LA1 of motor push rod earthing or grounding means LA has electric current to pass through, motor push rod ground connection dress
The push rod LA2 for setting LA stretches out, so that the earthing switch LA3 of motor push rod earthing or grounding means LA is closed, earthing module 7 completes ground connection,
Ground state indicator light HL1 is bright at this time.
It is the electricity of one embodiment of the discharge module of lightning current percussion mechanism provided by the utility model referring to Fig. 3
Road schematic diagram.As shown in figure 3, discharge module 6 includes the second intermediate relay ZJ 2 and electric discharge trigger ball G；
The coil of second intermediate relay ZJ 2 is connect with discharge signal input terminal b, the switch of the second intermediate relay ZJ 2
It is connect with the coil G1 of electric discharge trigger ball G, the first electrode G2 of electric discharge trigger ball G is connect with discharge current input terminal c, electric discharge touching
The second electrode G3 of service G is connect with discharge end d.
Wherein, the work process of discharge module 6 is as follows: after discharge signal input terminal b receives discharge signal, in second
Between the coil of relay ZJ2 be powered, the second intermediate relay ZJ 2 closes the switch, and the coil G1 of electric discharge trigger ball G is powered, and puts
The second electrode G3 contact discharge of the first electrode G2 and electric discharge trigger ball G of electric trigger ball G.
It should be noted that can be between the switch of the second intermediate relay ZJ 2 and the coil G1 for the trigger ball G that discharges
Setting triggering interlock switch K3, carries out electric discharge duplicate protection.
Referring to fig. 4, be lightning current percussion mechanism provided by the utility model charging module one embodiment electricity
Road schematic diagram.As shown in Figure 1 and Figure 4, charging module 3 includes third intermediate relay ZJ 3, A.C. contactor KM, pressure regulation unit
10,3rd resistor R3, boosting isolating transformer T and high voltage silicon rectifier stack D1；
The coil of third intermediate relay ZJ 3 is connect with the input terminal of charging module 3, and third intermediate relay ZJ 3 is opened
Pass is connect with the coil of A.C. contactor KM, and the switch of A.C. contactor KM is connect with the input terminal of pressure regulation unit 10, pressure regulation list
The output end of member 10 is connect by 3rd resistor R3 with the armature winding for the isolating transformer T that boosts, time of boosting isolating transformer T
The first end of grade winding is connect with the anode of high voltage silicon rectifier stack D1, and high voltage silicon rectifier stack D1 cathode is connect with the output end of charging module 3.
Wherein, the work process of charging module 3 is as follows: after the input terminal of charging module 3 receives charging signals, third
The coil of intermediate relay ZJ 3 is powered, and third intermediate relay ZJ 3 closes the switch, and the coil of A.C. contactor KM is powered, and hands over
Stream contactor KM's closes the switch, and the voltage of the armature winding of 10 couples of pressure regulation unit input boosting isolating transformer T is adjusted,
Boosting isolating transformer T carries out boosting processing to input voltage, and is charged by high voltage silicon rectifier stack D1 to energy-storage module 4.It is high
For preventing, voltage reversal from puncturing pressure silicon stack D1 and damages to boosting isolating transformer T.
Further, lightning current percussion mechanism further includes charging instruction module HL3；
Charging instruction module HL2 is connect with the switch of A.C. contactor KM.
Further, energy-storage module 4 includes capacitor；
The first end of capacitor is connect with the cathode of high voltage silicon rectifier stack D1, the second end of capacitor and time of boosting isolating transformer T
The second end connection of grade winding.
It should be noted that energy is housed in energy-storage module 4 by charging module 3, i.e., charge to the both ends of capacitor, when filling
After electricity to predetermined voltage, harmonic module 5 carries out harmonic to charging voltage, generates the lightning current wave of certain voltage value, energy storage mould
The lightning current wave is sent to the discharge current input terminal c of discharge module 6 by block 4.Wherein, general lightning current generator
In energy-storage module be to be formed in parallel by multiple capacitors, increase lightning current generator volume.Wherein, harmonic module 5
Wave regulating resistor can be used, the second end of capacitor is grounded by wave regulating resistor.
Further, function button module 1 includes the first charging interlock switch K1 and the second charging interlock switch K2；
The switch of third time relay ZJ3 is connected by the coil of the first charging interlock switch K1 and A.C. contactor KM
It connects, the switch of A.C. contactor KM is connect by the second charging interlock switch K2 with the input terminal of pressure regulation unit 10.
It should be noted that the first charging interlock switch K1 and the second charging interlock switch K2 play duplicate protection
Effect, to avoid the case where remote controler carries out maloperation is accidentally pressed.
Lightning current percussion mechanism provided by the utility model is pressed when carrying out lightning current shock-testing by function
Key module sets charging control signal and exports to the setting signal input terminal of PLC controller, and PLC controller is according to charge control
Signal exports charging signals to charging module, and charging module is energy-storage module charging, harmonic module pair according to the charging signals
Charging voltage carries out harmonic to generate the lightning current wave of certain voltage value, and the lightning current wave is sent to and puts by energy-storage module
The discharge current input terminal of electric module, after charging, PLC controller is sent to the discharge signal input terminal of discharge module discharges
Signal, discharge module, which receives, applies the lightning current wave to Surge Protector by discharge end after discharge signal, realizes to wave
The shock-testing of surge protector, when Surge Protector works, indicator light is intact, when Surge Protector is against regulation
When failure, indicator light is burst, and can intuitively see a protective effect of the qualified Surge Protector to equipment, so as to
Surge Protector against regulation is rapidly and accurately filtered out, it is intuitive quick, the output at control point is done using PLC controller
And input, reduce many control devices, reduce volume, reduces costs.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (10)
1. a kind of lightning current percussion mechanism, which is characterized in that including function button module, PLC controller, charging module, storage
It can module, harmonic module, discharge module and indicator light；
The PLC controller includes setting signal input terminal, discharge signal output end and charging signals output end, the electric discharge mould
Block includes discharge current input terminal, discharge signal input terminal and discharge end；
The setting signal input terminal is connect with the function button module, the discharge signal output end and the discharge signal
Input terminal connection, the charging signals output end are connect with the input terminal of the charging module, the output end of the charging module
It is connect with the energy-storage module, the energy-storage module is connect with the discharge current input terminal of the discharge module, the energy storage mould
Block is connect with the harmonic module, and the discharge end of the discharge module connects for connecting Surge Protector, the indicator light parallel connection
It is connected to the both ends of the Surge Protector.
2. lightning current percussion mechanism according to claim 1, which is characterized in that the PLC controller further includes ground connection
Signal output end, the lightning current percussion mechanism further includes earthing module, the earthing module include the first intermediate relay,
Motor push rod earthing or grounding means and ground state indicator light；
The ground signalling output end is connect with the coil of first intermediate relay, the switch of first intermediate relay
It is connect with the neutral earthing compensator of the motor push rod earthing or grounding means, the first end of the earthing switch of the motor push rod earthing or grounding means connects
It is connected to exchange firewire, the second end of the earthing switch of the motor push rod earthing or grounding means and the ground state indicator light
First end connection, the second end of the ground state indicator light are connected to AC neutral line.
3. lightning current percussion mechanism according to claim 1, which is characterized in that the lightning current percussion mechanism also wraps
Voltage sampling unit and measurement display unit are included, the voltage sampling unit includes sampling end, ground terminal and sampled signal output
End；
The sampling end is connect with the energy-storage module, and the sampled signal output end is connect with the measurement display unit.
4. lightning current percussion mechanism according to claim 3, which is characterized in that the voltage sampling unit includes first
Resistance and second resistance；
The first end of the first resistor is connect with the sampling end, and the second end of the first resistor passes through the second resistance
It is connect with the ground terminal, the second end of the first resistor is connect with the sampled signal output end.
5. lightning current percussion mechanism according to any one of claims 1 to 4, which is characterized in that the function button mould
Block includes remote control unit and remote controler,
The remote control unit is connect with the PLC controller, and the remote controler and remote control unit wireless communication connect.
6. lightning current percussion mechanism according to any one of claims 1 to 4, which is characterized in that the discharge module packet
Include the second intermediate relay and electric discharge trigger ball；
The coil of second intermediate relay is connect with the discharge signal input terminal, the switch of second intermediate relay
It being connect with the coil of the electric discharge trigger ball, the first electrode of the electric discharge trigger ball is connect with the discharge current input terminal,
The second electrode of the electric discharge trigger ball is connect with the discharge end.
7. lightning current percussion mechanism according to any one of claims 1 to 4, which is characterized in that the charging module packet
Include third intermediate relay, A.C. contactor, pressure regulation unit, 3rd resistor, boosting isolating transformer and high voltage silicon rectifier stack；
The coil of the third intermediate relay is connect with the input terminal of the charging module, and the third intermediate relay is opened
Pass is connect with the coil of the A.C. contactor, and the switch of the A.C. contactor is connect with the input terminal of the pressure regulation unit,
The output end of the pressure regulation unit is connect by the 3rd resistor with the armature winding of the boosting isolating transformer, the liter
The first end of the secondary windings of isolating transformer is pressed to connect with the anode of the high voltage silicon rectifier stack, the cathode of the high voltage silicon rectifier stack and institute
State the output end connection of charging module.
8. lightning current percussion mechanism according to claim 7, which is characterized in that the lightning current percussion mechanism also wraps
Include charging instruction module；
The charging instruction module is connect with the switch of the A.C. contactor.
9. lightning current percussion mechanism according to claim 7, which is characterized in that the energy-storage module includes capacitor；
The first end of the capacitor is connect with the cathode of the high voltage silicon rectifier stack, and change is isolated with the boosting in the second end of the capacitor
The second end of the secondary windings of depressor connects.
10. lightning current percussion mechanism according to claim 7, which is characterized in that the function button module includes the
One charging interlock switch and the second charging interlock switch；
The switch of the third intermediate relay is connected by the coil of the first charging interlock switch and the A.C. contactor
It connects, the switch of the A.C. contactor is connect by the second charging interlock switch with the input terminal of the pressure regulation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050187.2U CN209690445U (en) | 2018-12-07 | 2018-12-07 | A kind of lightning current percussion mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050187.2U CN209690445U (en) | 2018-12-07 | 2018-12-07 | A kind of lightning current percussion mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN209690445U true CN209690445U (en) | 2019-11-26 |
Family
ID=68595802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822050187.2U Withdrawn - After Issue CN209690445U (en) | 2018-12-07 | 2018-12-07 | A kind of lightning current percussion mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298301A (en) * | 2018-12-07 | 2019-02-01 | 珠海德利和电气有限公司 | A kind of lightning current percussion mechanism |
-
2018
- 2018-12-07 CN CN201822050187.2U patent/CN209690445U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109298301A (en) * | 2018-12-07 | 2019-02-01 | 珠海德利和电气有限公司 | A kind of lightning current percussion mechanism |
| CN109298301B (en) * | 2018-12-07 | 2023-09-08 | 珠海德利和电气有限公司 | Lightning current impulse device |
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