CN216699501U - Integrated structure three-phase power supply surge protector - Google Patents

Abstract

The utility model discloses a three-phase power supply surge protector with an integrated structure, which comprises a voltage-sensitive module protection unit and a discharge tube module protection unit, wherein the voltage-sensitive module protection unit is formed by connecting three voltage-sensitive resistors in parallel; the piezoresistor is provided with a piezoresistor high-temperature pin and a piezoresistor low-temperature pin, the piezoresistor high-temperature pin is welded with the welding punch at high temperature, and the piezoresistor low-temperature pin is welded with the elastic piece punch at low temperature; the gas discharge tube is provided with a gas discharge high-temperature pin and a gas discharge low-temperature pin, the gas discharge high-temperature pin is welded with the welding punch at a high temperature, and the gas discharge low-temperature pin is welded with the elastic piece punch at a low temperature. The integrated three-phase power surge protector is safe and reliable in product performance, simple and compact in structure, capable of being integrated into 144 millimeters, simple and convenient to assemble, capable of being used for power distribution systems from LPZ1 to LPZ2, capable of preventing rear electrical equipment from being damaged by lightning strikes and transient overvoltage, and capable of achieving N-phase and PE-phase wiring position exchange modes.

Description

Integrated structure three-phase power supply surge protector

Technical Field

The utility model relates to the field of electronics, in particular to a three-phase power surge protector with an integrated structure.

Background

The surge protector is a protection device for providing safety protection for various electronic equipment, instruments and meters and communication lines, and when an electric loop and the communication line are damaged due to lightning attack or other instantaneous overvoltage, the surge protector can be started in time to discharge the lightning attack or other instantaneous overvoltage, so that the effect of protecting rear-end equipment is achieved.

At present, a three-phase power supply surge protector bears weak impact current, an external bus bar is needed for connection in a 3+1 protection mode, and a crimping screw is shared with a user wiring screw. When a user installs a wiring, the bus bar is easy to be connected unreliably, the over-current capability is weakened, and the phenomenon of sparking occurs.

Because product components of a whole that can function independently base is when being used for 3+1 protection mode integrated configuration three-phase power surge protector, can't realize N looks and PE looks wiring position interchange mode, it is relatively poor to satisfy user's wiring adaptability to the telecommand trunk contacts of 4 modules are mutually independent can not concentrate and provide alarm signal, need establish ties or parallel connection with four telecommand trunk contacts when actual installation is used, bring inconvenience for the user.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-phase power supply surge protector with an integrated structure so as to solve the problems.

In order to solve the technical problem, the utility model provides an integrated three-phase power supply surge protector which comprises a voltage-sensitive module protection unit and a discharge tube module protection unit, wherein the voltage-sensitive module protection unit is formed by connecting three voltage-sensitive resistors in parallel, and the discharge tube module protection unit is formed by connecting two gas discharge tubes in parallel; the piezoresistor is provided with a piezoresistor high-temperature pin and a piezoresistor low-temperature pin, the piezoresistor high-temperature pin is welded with the welding punch at high temperature, and the piezoresistor low-temperature pin is welded with the elastic piece punch at low temperature; the gas discharge tube is provided with a gas discharge high-temperature pin and a gas discharge low-temperature pin, the gas discharge high-temperature pin is welded with the welding punch at a high temperature, and the gas discharge low-temperature pin is welded with the elastic piece punch at a low temperature.

Further, the single flow rate of the piezoresistor is 40kA, and the flow rate of the piezomodule protection unit is 120 kA; the gas discharge tube had a single throughflow of 60 kA. The discharge tube module protection unit throughput is 120 kA.

Furthermore, the lamp tube module protection device also comprises an upper cover and a base, wherein the upper cover is connected and combined with the base through a connecting screw, and the pressure-sensitive module protection unit and the discharge tube module protection unit are accommodated in the base.

Furthermore, the upper cover is provided with a printed board A placing position, a printed board B placing position, a terminal contact pin placing position and a lead placing groove; the printed board A, the printed board B, the microswitch and the lead are combined by tin soldering and are respectively and correspondingly arranged in a printed board A placing position, a lead placing groove, a printed board B placing position and a terminal contact pin placing position;

the base is equipped with the piezo-resistor standing groove, welds towards a standing groove, shell fragment towards a standing groove, gas discharge tube standing groove, the position is placed to the cap, the metal buckle is placed position, buckle spring standing groove.

A piezoresistor module protection unit is placed in the piezoresistor placing groove, a piezoresistor is provided with a piezoresistor high-temperature pin and a piezoresistor low-temperature pin, the piezoresistor high-temperature pin and the welding punch are in high-temperature welding, and the piezoresistor low-temperature pin and the elastic piece punch respectively and are in low-temperature welding to serve as a tripping point.

Discharge tube module protection unit has been placed in the gas discharge tube standing groove, and gas discharge tube is equipped with gas and puts high temperature pin and gas and puts low temperature pin, and gas is put high temperature pin and is welded towards the piece and be high temperature welded, and gas is put low temperature pin and shell fragment and is dashed the piece and be low temperature welded, does the trip point.

Furtherly, metal buckle on the base places position and buckle spring standing groove and packs into metal buckle and buckle spring respectively, is applicable to 35 millimeters DIN guide rail installation.

Further, the cap is placed the position and is 6, and the cap is placed the correspondence in the position and is put into the cap for satisfy GB/T18802 low pressure surge protector's creepage distance requirement.

Further, the welding punch placing groove comprises three two-position spot welding punch A placing grooves and one two-position spot welding punch B placing groove, and the elastic piece punch placing groove comprises a Z-shaped punch placing groove;

the high-temperature pin of the piezoresistor and the punching piece A of the two-position spot welding punching piece A are welded at high temperature, and the low-temperature pin of the piezoresistor and the Z-shaped punching piece elastic sheet on the Z-shaped punching piece are welded at low temperature to be taken as a tripping point; the gas release high-temperature pin and the punching piece B on the Z-shaped punching piece are welded at high temperature, and the gas release low-temperature pin and the three-position elastic sheet of the two-position spot welding punching piece B are welded at low temperature to form a tripping point.

Further, the welding punch placing groove comprises four two-position spot welding punch A placing grooves, and the elastic piece punch placing groove comprises a two-position four-elastic piece punch placing groove;

the high-temperature pin of the piezoresistor and the punching piece A of the two-position spot welding punching piece A are welded at high temperature, and the low-temperature pin of the piezoresistor and the three-position elastic piece of the two-position four-elastic piece punching piece are welded at low temperature to be taken as a tripping point; the gas-release high-temperature pin and the punching piece A of the two-position spot welding punching piece A are welded at high temperature, and the gas-release low-temperature pin and the three-position elastic piece of the two-position four-elastic piece punching piece are welded at low temperature to be taken as a tripping point.

Furthermore, a transparent window placing position is arranged on the upper cover and used for installing an alarm transparent window; the warning transparent windows are multiple, and the warning transparent windows are arranged in the transparent window placing positions and are fixed by hot melting positioning columns.

Furthermore, the elastic sheet punching piece is provided with a marking part.

The utility model has the beneficial effects that: this integrated configuration three phase current surge protector can realize 3+1 protection mode through the design to its inner structure, and inside electrical connection is more reasonable, has guaranteed that product property can be safe and reliable more. The integrated bus bar has a simple and compact structure, can be integrated into 144 mm as a whole, is simple and convenient to assemble, can bear impact current of 120kA, 8/20uS or 15kA, 10/350uS and load current of 100A by adopting the built-in integrated bus bar, can be used for a power distribution system from LPZ1 to LPZ2 areas, can prevent rear electrical equipment from being damaged by lightning stroke and transient overvoltage, and can realize an N-phase and PE-phase wiring position interchange mode.

Drawings

Fig. 1 schematically shows an exploded view of the surge protector when a Z-punch is used.

Fig. 2 is a schematic diagram of the structure of the upper cover of the surge protector when a Z-shaped punch is adopted.

Fig. 3 schematically shows a block diagram of one face of the base of the surge protector when a Z-punch is used.

Fig. 4 schematically shows a structural view of the other side of the base of the surge protector when a Z-punch is used.

Fig. 5 schematically shows a product diagram of the surge protector when a Z-shaped punch is used.

Fig. 6 schematically shows an exploded view of the surge protector when a two-position four-spring punch is used.

Fig. 7 schematically shows a structural diagram of the upper cover of the surge protector when a two-position four-spring sheet punching piece is adopted.

Fig. 8 schematically shows a structural view of one side of the base of the surge protector when a two-position four-spring punch is used.

Fig. 9 schematically shows a structural view of the other side of the base of the surge protector when a two-position four-spring punch is used.

Fig. 10 schematically shows a product diagram of the surge protector when a two-position four-spring punch is used.

Wherein: 1. an upper cover; 2. an alarm transparent window; 3. a printed board A; 4. a microswitch; 41. a microswitch plectrum; 5. a screw; 6. two spot welding punches A; 61. punching a part A; 7. a binding post; 8. a gas discharge tube; 81. a gas discharge low temperature pin; 82. gas discharge high temperature pins; 9. two-position spot welding punch B; 10. z-shaped punching; 101. punching a part B; 102. a Z-shaped punching piece elastic sheet; 11. a base; 12. a snap spring; 13. a metal buckle; 14. a terminal screw; 15. a cap; 16. a wire; 17. a printed board B; 18. a terminal pin; 19. shaking the letter terminal plug; 20. a voltage dependent resistor; 201. a high-temperature pin of the piezoresistor; 202. a low-temperature pin of the piezoresistor; 21. two-position four-elastic piece punching piece; 22. the transparent window is placed; 23. placing a printing plate A; 24. placing a printing plate B; 25. a terminal pin placing position; 26. a wire placement slot; 27. a cap placing position; 28. a metal buckle placing position; 29. a buckle spring placing groove; 30. a piezoresistor placing groove; 31. two spot welding punch A placing grooves; 32. a gas discharge tube placing groove; 33. a Z-shaped stamping part placing groove; 34. two-position four-elastic piece punching piece placing groove; 35. three-position shrapnel; 36. two-position spot welding dashes piece B standing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiment is only one embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For purposes of making the objects, aspects and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments, and for the sake of simplicity, the following description will omit conventional setting techniques known to those skilled in the art.

As shown in fig. 1 to 10, the three-phase power surge protector with an integrated structure comprises a voltage-sensitive module protection unit and a discharge tube module protection unit, wherein the voltage-sensitive module protection unit is formed by connecting three voltage-sensitive resistors 20 in parallel, and the discharge tube module protection unit is formed by connecting two gas discharge tubes 8 in parallel. Wherein, the single through flow of the piezoresistor 20 is 40kA, and the through flow of the piezomodule protection unit is 120 kA; the gas discharge tube 8 has a single throughflow of 60 kA. The discharge tube module protection unit throughput is 120 kA.

The integrated three-phase power supply surge protector further comprises an upper cover 1 and a base 11, the upper cover 1 is connected and combined with the base 11 through a connecting screw 5, and a pressure-sensitive module protection unit and a discharge tube module protection unit are accommodated in the base 11. The upper cover 1 is provided with a printed board A placing position 23, a printed board B placing position 24, a terminal pin placing position 25 and a wire placing groove 26; wherein, printed board A places position 23 and violently establishes in upper cover 1 middle part position department, and printed board B places position 24, terminal contact pin and places position 25 and wire standing groove 26 and closes on the setting each other, and wire standing groove 26 is located the side position department of upper cover 1.

Specifically, there are 12 micro switches 4, and micro switches 4 are connected to printed board A3 at intervals, one side of printed board A3 is connected to printed board B17 through lead 16, and shaking signal terminal plug 19 is connected to printed board B17 through terminal pin 18. The printed board a3, the printed board B17, the microswitch 4 and the lead 16 are all combined by soldering, and are respectively and correspondingly arranged in the printed board a placing position 23, the lead placing groove 26, the printed board B placing position 24 and the terminal pin placing position 25.

The printed board A3 is positioned by the positioning column of the upper cover 1 and fixed by the hot melting column, so that the printed board A3 is prevented from shaking. A transparent window placing position 22 is also preferably arranged on the upper cover 1 and used for installing the alarm transparent window 2; the warning transparent window 2 is a plurality of, and a plurality of warning transparent windows 2 are packed into transparent window and are placed position 22 to adopt hot melt reference column to fix, report an emergency and ask for help or increased vigilance the specific quantity of transparent window 2 and do not do the restriction, can be 4, 5 or other.

The base 11 is provided with a varistor placement groove 30, a welding punch placement groove, a spring punch placement groove, a gas discharge tube placement groove 32, a cap placement position 27, a metal clip placement position 28, and a clip spring placement groove 29. Among them, the varistor placing groove 30, the welding punch placing groove, the spring piece punch placing groove, and the gas discharge tube placing groove 32 are provided on one face of the base 11, and the cap placing position 27, the metal clip placing position 28, and the clip spring placing groove 29 are provided on the other face of the base 11. It is preferable that the cap placing position 27 is 6, the metal clip placing position 28 is 2, and the clip spring placing groove 29 is 2.

The metal buckle placing position 28 and the buckle spring placing groove 29 on the base 11 are respectively filled with the metal buckle 13 and the buckle spring 12, and the device is suitable for 35 mm DIN guide rail installation. The number of the cap placing positions 27 is 6, and the caps 15 are correspondingly placed in the cap placing positions 27 and used for meeting the creepage distance requirement of the GB/T18802 low-voltage surge protector.

The piezomodule protection unit has been placed in this integrated structure three-phase power surge protector piezoresistor standing groove 30, and piezoresistor standing groove 30 is three, has all placed the piezomodule protection unit in every piezoresistor standing groove 30. The piezoresistor 20 is provided with a piezoresistor high-temperature pin 201 and a piezoresistor low-temperature pin 202, the piezoresistor high-temperature pin 201 and the welding punch are in high-temperature welding, and the piezoresistor low-temperature pin 202 and the elastic piece punch are respectively in low-temperature welding to form a tripping point.

Discharge tube module protection unit has been placed in the gas discharge tube standing groove 32, and gas discharge tube 8 is equipped with gas and puts high temperature pin 82 and gas and put low temperature pin 81, and gas is put high temperature pin 82 and is welded towards the piece and be high temperature welded, and gas is put low temperature pin and shell fragment and is washed the piece and be low temperature welded, does the trip point.

According to an embodiment of the present application, referring to fig. 1 to 5, on the basis of the above structure, the welding punch placing groove may include three two-position spot welding punch a placing grooves, one two-position spot welding punch B placing groove, and the spring piece punch placing groove may include one Z-shaped punch placing groove 33.

The high-temperature pin 201 of the piezoresistor and the punch A61 of the two-position spot welding punch A61 are welded at high temperature, wherein the two-position spot welding punch A61 is connected with the binding post 7 at the lower end of the two-position spot welding punch A61 through the binding post screw 14, and the punch A61 is positioned at one side of the binding post 7. The low-temperature pin 202 of the piezoresistor and the Z-shaped punching piece elastic sheet 102 on the Z-shaped punching piece 10 are welded at low temperature and are used as tripping points; the high-temperature pin of the gas discharge tube 8 is welded with the punch B101 on the Z-shaped punch 10 at high temperature, and the low-temperature pin of the gas discharge tube 8 is welded with the three-position elastic sheet 35 of the two-position spot welding punch B9 at low temperature to form a tripping point.

Specifically, three same varistor module protection units are respectively placed in the three varistor placement grooves 30, each varistor module protection unit comprises three varistors 20, and a parallel connection mode is adopted, wherein the single flux of each varistor 20 is 40kA, and the three parallel connections are 120 kA. The three piezoresistor high-temperature pins 201 are respectively welded with a punching piece A61 of three two-position spot welding punching pieces A61 at high temperature, and the three piezoresistor low-temperature pins 202 are respectively welded with the Z-shaped punching piece elastic sheet 102 at low temperature to be taken as tripping points, so that nine parts are formed.

When the surge protector is damaged due to lightning strike or instantaneous overvoltage, the low-temperature pin 202 of the piezoresistor is respectively released and disconnected from the Z-shaped punching piece elastic sheet 102, the Z-shaped punching piece elastic sheet 102 is restored to deform through self elasticity to expose the mark part, and the mark part is observed through the transparent warning window 2 so as to warn that the three-phase power surge protector breaks down. And the Z-shaped punching piece elastic sheet 102 recovers deformation through self elasticity and presses the microswitch shifting sheet 41 to be in a pressing state, and the remote signaling is converted from a normally closed state to a normally open state.

A discharge tube module protection unit is placed in the gas discharge tube placing groove 32, the discharge tube module protection unit 32 comprises two identical gas discharge tubes 8, and a parallel connection mode is adopted, wherein the single flow rate of the gas discharge tubes 8 is 60kA, and the two parallel connections are 120 kA; the two gas release high-temperature pins 82 are respectively welded with the punching piece B101 on the Z-shaped punching piece 10 at high temperature, and the two gas release low-temperature pins 81 are respectively welded with the three-position elastic sheet 35 of the two-position spot welding punching piece B9 at low temperature to be taken as tripping points.

When the surge protector is damaged due to lightning strike or instantaneous overvoltage, the two gas discharge low-temperature pins 81 are respectively tripped and disconnected from the three-position elastic sheet 35, the three-position elastic sheet 35 of the two-position spot welding punch B9 is deformed by elastic recovery of the three-position elastic sheet to expose the mark arranged on the three-position elastic sheet 35, and the mark can be observed through the transparent alarm window to warn the three-phase power supply surge protector to break down. The three-position elastic sheet 35 restores deformation through self elasticity and presses the microswitch shifting sheet 41 to be in a pressing state, and the remote signaling is converted from a normally closed state to a normally open state.

The bus bar is connected through the built-in Z-shaped punch 10, the user external connection is convenient and reliable, the overcurrent capacity is strong and stable, and N-phase upper connection can be met. And the acting force of the three-position elastic sheet 35 of the Z-shaped punching piece 10 on the microswitch shifting sheet 41 is respectively converted into a pressing state corresponding to the release state of the microswitch 4, and the generated state signals are transmitted through the printed board, the lead 16 and the remote communication terminal for remote monitoring, so that the fault of the surge protector is warned.

According to the design of the embodiment, when a product is damaged due to lightning attack or instantaneous overvoltage, three low-temperature pins 202 of the piezoresistors in the piezoresistor module protection unit are respectively bounced off the Z-shaped punching piece elastic sheet 102 to expose the marking part of the Z-shaped punching piece elastic sheet 102 and are displayed from the alarm transparent window 2; the release states corresponding to the micro switches 4 are respectively converted into pressing states, generated state signals are transmitted through a printed board, a lead 16 and a remote signaling terminal to carry out remote monitoring, the warning main contact point port NC-COM is changed into an open-circuit state, the warning main contact point port NO-COM is changed into a short-circuit state, the three-phase power supply surge protector is warned of faults, and a user is reminded of needing to replace the three-phase power supply surge protector.

According to an embodiment of the present application, referring to fig. 6 to 10, on the basis of the first embodiment, the welding punch placing groove may further include four two-position spot welding punch a placing grooves, and the spring punch placing groove may include one two-position four-spring punch placing groove 34; the high-temperature pin 201 of the piezoresistor is welded with the punch A61 of the two-position spot welding punch A61 at high temperature, and the low-temperature pin 202 of the piezoresistor is welded with the three-position elastic sheet 35 of the two-position four-elastic-sheet punch 21 at low temperature to serve as a tripping point; the high-temperature pin of the gas discharge tube 8 is welded with the punch A61 of the two-position spot welding punch A61 at high temperature, and the low-temperature pin of the gas discharge tube 8 is welded with the three-position elastic sheet 35 of the two-position four-elastic-sheet punch 21 at low temperature to serve as a tripping point.

Specifically, three same varistor module protection units are respectively placed in the three varistor placement grooves 30, each varistor module protection unit comprises three varistors 20, and a parallel connection mode is adopted, wherein the single flux of each varistor 20 is 40kA, and the three parallel connections are 120 kA. The three piezoresistor high-temperature pins 201 are respectively welded with the punch A61 of the two-position spot welding punch A61 at high temperature, and the three piezoresistor low-temperature pins 202 are respectively welded with the three-position elastic sheet 35 of the two-position four-elastic sheet punch 21 at low temperature to form trip points, wherein the number of the trip points is nine.

When the surge protector is damaged due to lightning strike or instantaneous overvoltage, the low-temperature pin 202 of the piezoresistor is respectively tripped and disconnected from the three-position elastic sheet 35 of the two-position four-elastic-sheet punching piece 21, the three-position elastic sheet 35 of the two-position four-elastic-sheet punching piece 21 is restored to deform through self elasticity to expose the mark part arranged on the three-position elastic sheet, and the mark part is displayed through the alarm transparent window 2 so as to warn that the surge protector breaks down. The three-position elastic sheet 35 of the two-position four-elastic sheet punching piece 21 recovers deformation through self elasticity and presses the microswitch shifting sheet 41 to be in a pressing state, and the remote signaling is converted from a normally closed state to a normally open state.

The discharge tube module protection unit is placed in the gas discharge tube placement groove 32, the discharge tube module protection unit 32 includes two identical gas discharge tubes 8, and a parallel connection mode is adopted, the single flow rate of the gas discharge tubes 8 is 60kA, and the two parallel connections are 120 kA. Two gas discharge high-temperature pins 82 are respectively welded with a punch A61 of a two-position spot welding punch A61 at high temperature, and two gas discharge tube 8 low-temperature pins are respectively welded with a three-position elastic sheet 35 of a two-position four-elastic sheet punch 21 at low temperature to form tripping points.

When the surge protector is damaged due to lightning strike or instantaneous overvoltage, the two gas-discharge low-temperature pins 81 are respectively disconnected with the three-position elastic sheet 35 in a tripping way, the three-position elastic sheet 35 of the two-position four-elastic-sheet punching piece 21 is restored to deform through self elasticity to expose the mark arranged on the three-position elastic sheet, and the transparent window 2 can be used for displaying in an alarming way so as to warn that the surge protector breaks down. The three-position elastic sheet 35 restores deformation through self elasticity and presses the microswitch shifting sheet 41 to be in a pressing state, and the remote signaling is converted from a normally closed state to a normally open state.

The built-in two-position four-elastic-piece integrated bus bar is connected, so that convenience and reliability in external wiring of a user are realized, the overcurrent capacity is high and stable, and the requirement of N-phase wiring below can be met. And the acting force of the three-position elastic sheet 35 of the two-position four-elastic-sheet punching piece 21 on the microswitch shifting sheet 41 is respectively converted into a pressing state corresponding to the release state of the microswitch 4, and the generated state signal is transmitted through the printed board, the lead 16 and the remote communication terminal to carry out remote monitoring so as to warn the surge protector of failure.

In the design, when the product is damaged due to lightning strike or instantaneous overvoltage, the three low-temperature pins 202 of the piezoresistor in the piezoresistor module protection unit are respectively flicked away from the elastic sheet of the two-position four-elastic-sheet punching piece 21, so that the mark on the elastic sheet of the two-position four-elastic-sheet punching piece 21 is exposed and displayed through the alarm transparent window 2. The release states corresponding to the micro switches 4 are respectively converted into pressing states, generated state signals are transmitted through a printed board, a lead 16 and a remote signaling terminal to carry out remote monitoring, the warning main contact point port NC-COM is changed into an open-circuit state, the warning main contact point port NO-COM is changed into a short-circuit state, the three-phase power supply surge protector is warned of faults, and a user is reminded of needing to replace the three-phase power supply surge protector.

In conclusion, the structural design of the product can realize a 3+1 protection mode and can realize an N-phase and PE-phase wiring position interchange mode; the internal electrical connection is more reasonable, and the product performance is ensured to be safer and more reliable; the structure is simple, the assembly is simple and convenient, and the built-in integrated bus bar can bear 120kA and 8/20 uS; or 15kA, 10/350uS rush current and 100A load current; the power distribution system which can be used in the areas from LPZ1 to LPZ2 can prevent the following electrical equipment from being damaged by lightning strikes and transient overvoltage.

In the description above, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. Moreover, repeated use of the phrase "in accordance with an embodiment of the present application" although it may possibly refer to the same embodiment, does not necessarily refer to the same embodiment.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an integral structure three phase current surge protector which characterized in that: the gas discharge tube module protection device comprises a pressure-sensitive module protection unit and a discharge tube module protection unit, wherein the pressure-sensitive module protection unit is formed by connecting three piezoresistors in parallel, and the discharge tube module protection unit is formed by connecting two gas discharge tubes in parallel; the piezoresistor is provided with a piezoresistor high-temperature pin and a piezoresistor low-temperature pin, the piezoresistor high-temperature pin is welded with the welding punch at high temperature, and the piezoresistor low-temperature pin is welded with the elastic piece punch at low temperature; the gas discharge tube is provided with a gas discharge high-temperature pin and a gas discharge low-temperature pin, the gas discharge high-temperature pin is welded with the welding punch at a high temperature, and the gas discharge low-temperature pin is welded with the elastic piece punch at a low temperature.

2. The integrated structure three-phase power surge protector of claim 1, wherein: the single through flow of the piezoresistor is 40kA, and the through flow of the piezomodule protection unit is 120 kA; the single through flow of the gas discharge tube is 60 kA; the discharge tube module protection unit throughput is 120 kA.

3. The integrated structure three-phase power surge protector of claim 1, wherein: the pressure-sensitive module protection unit and the discharge tube module protection unit are accommodated in the base.

4. The integrated structure three-phase power surge protector of claim 3, wherein: the upper cover is provided with a printed board A placing position, a printed board B placing position, a terminal contact pin placing position and a lead placing groove; the printed board A, the printed board B, the microswitch and the lead are combined by tin soldering and are respectively and correspondingly arranged in the printed board A placing position, the lead placing groove, the printed board B placing position and the terminal contact pin placing position;

the base is provided with a piezoresistor placing groove, a welding punch placing groove, an elastic piece punch placing groove, a gas discharge tube placing groove, a cap placing position, a metal buckle placing position and a buckle spring placing groove; a piezoresistor module protection unit is arranged in the piezoresistor placing groove, a piezoresistor high-temperature pin and a welding punch are welded at high temperature, and a piezoresistor low-temperature pin and an elastic sheet on the elastic sheet punch are respectively welded at low temperature to form a tripping point; the discharge tube module protection unit is placed in the gas discharge tube placing groove, the gas discharge high-temperature pin and the welding punch piece are welded at high temperature, and the gas discharge low-temperature pin and the elastic piece on the elastic piece punch piece are welded at low temperature to form a tripping point.

5. The integrated structure three-phase power supply surge protector of claim 4, wherein: metal buckle and buckle spring are packed into respectively to metal buckle place position and buckle spring standing groove on the base, are applicable to 35 millimeters DIN guide rail installation.

6. The integrated structure three-phase power supply surge protector of claim 4, wherein: the cap placing positions are 6, and the caps are correspondingly placed in the cap placing positions and used for meeting the creepage distance requirement of the GB/T18802 low-voltage surge protector.

7. The integrated structure three-phase power supply surge protector of claim 4, wherein: the welding punch placing groove comprises three two-position spot welding punch A placing grooves and one two-position spot welding punch B placing groove, and the elastic piece punch placing groove comprises a Z-shaped punch placing groove;

the high-temperature pin of the piezoresistor and the punching piece A of the two-position spot welding punching piece A are welded at high temperature, and the low-temperature pin of the piezoresistor and the Z-shaped punching piece elastic sheet on the Z-shaped punching piece are welded at low temperature to be taken as a tripping point; the gas-release high-temperature pin and the punching piece B of the Z-shaped punching piece are welded at high temperature, and the gas-release low-temperature pin and the three-position elastic sheet of the two-position spot welding punching piece B are welded at low temperature to form a tripping point.

8. The integrated structure three-phase power supply surge protector of claim 4, wherein: the welding punch placing groove comprises four two-position spot welding punch A placing grooves, and the elastic piece punch placing groove comprises one two-position four-elastic piece punch placing groove;

the high-temperature pin of the piezoresistor and the punching piece A of the two-position spot welding punching piece A are subjected to high-temperature welding, and the low-temperature pin of the piezoresistor and the three-position elastic piece of the two-position four-elastic piece punching piece are subjected to low-temperature welding to form a tripping point; the gas-release high-temperature pin and the punching piece A of the two-position spot welding punching piece A are welded at high temperature, and the gas-release low-temperature pin and the three-position elastic piece of the two-position four-elastic piece punching piece are welded at low temperature to be taken as a tripping point.

9. The integrated structure three-phase power surge protector of claim 3, wherein: the upper cover is provided with a transparent window placing position for installing an alarm transparent window; the warning transparent window is a plurality of, and a plurality of warning transparent windows are packed into the transparent window and are placed the position to adopt hot melt reference column to fix.

10. The integrated structure three-phase power surge protector of claim 3, wherein: the elastic piece punching piece is provided with a marking part.

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