CN203180512U - Low tension side power supply surge protector - Google Patents
Low tension side power supply surge protector Download PDFInfo
- Publication number
- CN203180512U CN203180512U CN 201320110545 CN201320110545U CN203180512U CN 203180512 U CN203180512 U CN 203180512U CN 201320110545 CN201320110545 CN 201320110545 CN 201320110545 U CN201320110545 U CN 201320110545U CN 203180512 U CN203180512 U CN 203180512U
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- surge protector
- electrically connected
- zinc oxide
- side power
- power source
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Abstract
The utility model discloses a low tension side power supply surge protector, comprising three zinc oxide modules and one gas discharge tube module; one ends of the three zinc oxide modules are all electrically connected to one end of the gas discharge tube module to form star connection and form a neutralizing terminal; the other ends of the three zinc oxide modules respectively form three phase line terminals which are respectively electrically connected to three buses of a three phase power source; the neutralizing terminal can be electrically connected to a null line of the three phase power source; the other end of the gas discharge tube module is electrically grounding. The advantages are that the low tension side power supply surge protector is of a star structure, which solves the disadvantages that a surge protector on the current market is easy to age and has large leakage current; the cooperation of the gas discharge tube module and the zinc oxide module increases a protection mode of the surge protector, thereby proving a phase and phase transverse protection (difference module protection) mode based on a phase and ground vertical protection ( common module protection) mode.
Description
Technical field
The utility model relates to a kind of surge guard technology, relates in particular to a kind of low-pressure side power source surge protector.
Background technology
Power source surge protector adopts non-linear fabulous overvoltage protection element, and under normal circumstances Surge Protector is in high resistance state, thereby guarantees the normal power supply of power-supply system.When overvoltage surge appearred in power-supply system, power source surge protector is conducting in the time of nanosecond immediately, and the overvoltage amplitude limitation in the safe range of equipment, is discharged surge energy simultaneously with going into.Subsequently, Surge Protector becomes high-impedance state again rapidly, thereby does not influence the normal power supply of power-supply system.Surge Protector surplus in the existing market in protected mode, actuating mechanism is single, discharge capacity is little, the dropout reliability is low, can't the on-line monitoring running status etc. shortcoming.
The utility model content
In view of this; be necessary to provide a kind of low-pressure side power source surge protector; unique hub-and-spoke configuration design of its three zinc oxide modules and a gas discharge tube module; solved the shortcoming that Surge Protector in the market is very easily aging, leakage current is big; and gas discharge tube module and the protected mode that has increased Surge Protector cooperating of zinc oxide module, compare protected mode has increased phase and phase under vertical protection (common mode protection) pattern of phase and ground cross-protection (differential mode protection) pattern with product in the market.
The utility model is to realize like this; a kind of low-pressure side power source surge protector; it comprises three zinc oxide modules and a gas discharge tube module; the end that one end of these three zinc oxide modules all is electrically connected at this gas discharge tube module forms star-like connection; and formation connecting to neutral terminal; the other end of these three zinc oxide modules forms three phase terminal respectively; these three phase terminal can be electrically connected at three buses of three phase mains respectively; the connecting to neutral terminal can be electrically connected at the zero line of this three phase mains, the electrical ground connection of the other end of this gas discharge tube module.
As the further improvement of such scheme, each zinc oxide module comprises: the zinc oxide valve plate unit, and it comprises three zinc oxide valve plates, an end of these three zinc oxide valve plates is electrically connected at this connecting to neutral terminal; The first dropout actuating mechanism, it comprises these three the first hotness circuit breakers and this three first overcurrent protectors, one end of these three first overcurrent protectors is electrically connected at the other end of these three zinc oxide valve plates respectively, the other end of these three first overcurrent protectors is electrically connected at an end of these three the first hotness circuit breakers respectively, and the other end of these three the first hotness circuit breakers is electrically connected at corresponding phase terminal; The first fault Tip element; The first remote signalling control unit; it comprises first single-pole double-throw switch (SPDT); one of them moved end of this first single-pole double-throw switch (SPDT) is normally opened contact and is connected in this first fault Tip element; the controlled end of this first single-pole double-throw switch (SPDT) is connected in these three the first hotness circuit breakers and this three first overcurrent protectors; and in these three the first hotness circuit breakers and this three first overcurrent protectors at least one switches to start this first fault Tip element from this first single-pole double-throw switch (SPDT) and points out when disconnecting.
Preferably; this low-pressure side power source surge protector also comprises three first fire-retardant protecting crusts; this zinc oxide module of each first fire-retardant protecting crust encapsulation; each first fire-retardant protecting crust offers display window, and the first fault Tip element that is encapsulated in this first fire-retardant protecting crust can see through corresponding display window prompting and show.
Preferably, the hot trip point of each first hotness circuit breaker connects by cold welding and forms normally off, and the hot trip point of each first overcurrent protector also connects by cold welding and forms normally off.
Preferably, this gas discharge tube module comprises: gas discharge tube, the electrical ground connection of one end; The second dropout actuating mechanism, it comprises the second hotness circuit breaker and second overcurrent protector, one end of this second overcurrent protector is electrically connected at the other end of this gas discharge tube, the other end of this second overcurrent protector is electrically connected at an end of this second hotness circuit breaker, and the other end of this second hotness circuit breaker is electrically connected at this connecting to neutral terminal; The second fault Tip element; The second remote signalling control unit; it comprises second single-pole double-throw switch (SPDT); one of them moved end of this second single-pole double-throw switch (SPDT) is normally opened contact and is connected in this second fault Tip element; the controlled end of this second single-pole double-throw switch (SPDT) is connected in this second hotness circuit breaker and this second overcurrent protector; and in this second hotness circuit breaker and this second overcurrent protector at least one be when disconnecting, and this second single-pole double-throw switch (SPDT) switches to start this second Tip element points out.
Again preferably; this low-pressure side power source surge protector also comprises the second fire-retardant protecting crust; this second fire-retardant protecting crust encapsulates this gas discharge tube module; this second fire-retardant protecting crust offers display window, and the second fault Tip element that is encapsulated in this second fire-retardant protecting crust can see through this display window prompting and show.
Again preferably; this low-pressure side power source surge protector also comprises current sample instrument transformer and protection action counting module; the sampling end of this current sample instrument transformer is electrically connected at an end of this gas discharge tube ground connection, and the output of this current sample instrument transformer is electrically connected at this protection action counting module.
Again preferably, the hot trip point of this second hotness circuit breaker connects by cold welding and forms normally off, and the hot trip point of this second overcurrent protector also connects by cold welding and forms normally off.
Again preferably, all connecting to neutral terminals adopt the red copper bus-bar to connect.
The effect of having a mind to of the low-pressure side power source surge protector that the utility model provides is: the bigger surge current of 1, effectively releasing, avoided traditional Surge Protector because discharge capacity does not have for a short time due protection effect even burn Surge Protector; 2, protection level is higher, has effectively stoped the impact of overvoltage to insulation of electrical installation, compares the traditional protection device and protected apparatus insulated aging situation appears in Yan Buhui; 3, can provide horizontal and vertical two kinds of protected modes to the electric power system of three-phase four-wire system, traditional product has also been protected overvoltage between phase and phase relatively; 4, remote signalling function makes electric patrolman stay indoors just can monitor the operating state of Surge Protector, than it; 5, warm standby function has been striven for the time for the user changes the Surge Protector that has damaged, still can effectively protect electric equipment under the situation about in time not changing again; 6, low temperature " cold welding connects " technique guarantee as the fail safe of protector itself, can not cause harm to electric power system because of self reason.
Description of drawings
The application circuit schematic diagram of the low-pressure side power source surge protector that Fig. 1 provides for the utility model preferred embodiments.
Fig. 2 is the circuit diagram of the zinc oxide module of Fig. 1 mesolow side power source surge protector.
Fig. 3 is the circuit diagram of the gas discharge tube module of Fig. 1 mesolow side power source surge protector.
Fig. 4 is the outward appearance encapsulating structure schematic diagram of zinc oxide module among Fig. 2.
Fig. 5 is the outward appearance encapsulating structure schematic diagram of gas discharge tube module among Fig. 3.
Main symbol description: zinc oxide module 1; Gas discharge tube module 2; Current sample instrument transformer 3; Protection action counting module 4; Bus L1, L2, L3; Zero line N; Zinc oxide valve plate unit 5; The first dropout actuating mechanism 6; The first remote signalling control unit 8; Zinc oxide valve plate 9; The first hotness circuit breaker K1; The first overcurrent protector K2; Gas discharge tube GS; The second dropout actuating mechanism 7; The second remote signalling control unit 10; The second hotness circuit breaker K3; The second overcurrent protector K4; Contact N1, N2, N3, N21, N22, N23; The first fire-retardant protecting crust 11; The second fire-retardant protecting crust 12; Display window 13.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1, the application circuit schematic diagram of the low-pressure side power source surge protector that it provides for the utility model preferred embodiments.The low-pressure side power source surge protector comprises three zinc oxide modules 1, gas discharge tube module 2, current sample instrument transformer 3 and a protection action counting module 4.
The end that one end of three zinc oxide modules 1 all is electrically connected at this gas discharge tube module 2 forms star-like connection, and constitutes the connecting to neutral terminal, and the other end of three zinc oxide modules 1 forms three phase terminal respectively.Three phase terminal can be electrically connected at three bus L1, L2, the L3 of three phase mains respectively, and the connecting to neutral terminal can be electrically connected at the zero line N of three phase mains, the electrical ground connection of the other end of this gas discharge tube module 2.The sampling end of this current sample instrument transformer 3 is electrically connected at an end of these gas discharge tube module 2 ground connection, and the output of this current sample instrument transformer 3 is electrically connected at this protection action counting module 4.Protection action counting module 4 is used for calculating the low-pressure side power source surge protector to the protection number of times of equipment.
Please in conjunction with Fig. 2, each zinc oxide module 1 comprises zinc oxide valve plate unit 5, the first dropout actuating mechanism 6, the first fault Tip element (not shown) and the first remote signalling control unit 8.
Zinc oxide valve plate unit 5 comprises that an end of 9, three zinc oxide valve plates 8 of three zinc oxide valve plates is electrically connected at this connecting to neutral terminal, thereby is connected in zero line N.
Each first dropout actuating mechanism 6 comprises three first hotness circuit breaker K1 and three first overcurrent protector K2.The end of three first overcurrent protector K2 is electrically connected at the other end of three zinc oxide valve plates 9 respectively; the other end of three first overcurrent protector K2 is electrically connected at the end of three first hotness circuit breaker K1 respectively; the other end of three first hotness circuit breaker K1 is electrically connected at corresponding phase terminal, thereby each first dropout actuating mechanism 6 can be connected in corresponding bus.
The first remote signalling control unit 8 comprises first single-pole double-throw switch (SPDT); two moved end N2 of this first single-pole double-throw switch (SPDT); N3 and one not moved end N1 are connected in the external control chamber; the moved end N3 of this first single-pole double-throw switch (SPDT) is connected in this first fault Tip element; the controlled end of this first single-pole double-throw switch (SPDT) is connected in three first hotness circuit breaker K1 and three first overcurrent protector K2; and in three first hotness circuit breaker K1 and three first overcurrent protector K2 at least one is when disconnecting; this first single-pole double-throw switch (SPDT) switches, and driven end N2 switches to moved end N3 and starts this first fault Tip element and point out.
Please in conjunction with Fig. 3, this gas discharge tube module 2 comprises gas discharge tube GS, the second dropout actuating mechanism 7, the second fault Tip element (not shown), the second remote signalling control unit 10.
The electrical ground connection of an end of gas discharge tube GS.The second dropout actuating mechanism 10 comprises the second hotness circuit breaker K3 and the second overcurrent protector K4.The end of this second overcurrent protector K4 is electrically connected at the other end of this gas discharge tube GS; the other end of this second overcurrent protector K4 is electrically connected at the end of this second hotness circuit breaker K3, and the other end of this second hotness circuit breaker K3 is electrically connected at this connecting to neutral terminal.
The second remote signalling control unit 10 comprises second single-pole double-throw switch (SPDT); this second single-pole double-throw switch (SPDT) two moved end N22; N23 and one not moved end N21 are connected in this external control chamber; the moved end N23 of the normal open-circuit line of this second single-pole double-throw switch (SPDT) is connected in this second fault Tip element; the controlled end of this second single-pole double-throw switch (SPDT) is connected in this second hotness circuit breaker K3 and this second overcurrent protector K4; and in this second hotness circuit breaker K3 and this second overcurrent protector K4 at least one is when disconnecting; this second single-pole double-throw switch (SPDT) switches, and driven end N22 switches to moved end N23 and starts this second Tip element and point out.
Please in conjunction with Fig. 4 and Fig. 5, this low-pressure side power source surge protector also comprises three first fire-retardant protecting crusts 11 and second a fire-retardant protecting crust 12.Three first fire-retardant protecting crusts 11 and second a fire-retardant protecting crust 12 carry out packaging protection to three zinc oxide modules 1 and a gas discharge tube module 2 respectively.This zinc oxide module 1 of each first fire-retardant protecting crust 11 encapsulation, each first fire-retardant protecting crust 11 offers display window 13, and the first fault Tip element that is encapsulated in this first fire-retardant protecting crust 11 can see through corresponding display window 13 promptings and show.The second fire-retardant protecting crust 12 that is appreciated that encapsulation gas discharge tube module 2 also can be offered similar display window 13, and the second fault Tip element that is encapsulated in this second fire-retardant protecting crust 12 can see through these display window 13 promptings and show.
In the present embodiment; high energy ZnO valve block (being zinc oxide valve plate 9) tens of surge currents to hundreds of kilo-amperes that are mainly used to release; gas discharge tube GS connects with zinc oxide valve plate 9; be that Surge Protector is isolated electrical network when normal; insert electrical network during fault rapidly and implement protection; it is aging that Surge Protector is difficult for, and prolonged the useful life of Surge Protector, and the access of gas discharge tube GS reduces the leakage current of Surge Protector greatly.Zinc oxide valve plate 9 makes Surge Protector have " differential mode ", " common mode " two kinds of protected modes with the star-like integrated mode of gas discharge tube GS.Dropout actuating mechanism 10 is when Surge Protector itself breaks down self to be excised electrical network, avoids damaging the injury that electrical network is caused because of self.First, second remote signalling control unit 8,10 with the operating state teletransmission of Surge Protector itself to the external control chamber, the operating state of monitoring power supply Surge Protector in real time.Whether the corresponding component that first, second fault Tip element is used to refer to Surge Protector damages needs to change.Protection action counting module 4 is used for calculating Surge Protector to the protection number of times of equipment.High-quality inflaming retarding shell (being first, second fire-retardant protecting crust 11,12) is used for encapsulating the internal structure unit, and insulation is dustproof, adopts the red copper bus-bar to connect all connecting to neutral terminals.
Low-pressure side power source surge protector of the present utility model in use, when one of them hotness circuit breaker of zinc oxide module 1 or overcurrent protector disconnected, the first remote signalling control unit 8 switched routes, starts this first fault Tip element and points out.When one of them hotness circuit breaker of gas discharge tube module 2 or overcurrent protector disconnected, the second remote signalling control unit 10 switched routes, starts this second fault Tip element and points out.The hot trip point of hotness circuit breaker, overcurrent protector preferably connects by cold welding and forms normally off; not only solve the defective of the hot trip point of traditional Surge Protector but also reduced the overheated accumulated time of valve block; also reduced the aging infringement to valve block; trip speed is accelerated when making fault, can break away from electrical network effectively fast.
In sum, compared with prior art, low-pressure side power source surge protector of the present utility model has following advantage.
1, conventional power source lightning protection device discharge capacity is little; the bigger surge current of can't effectively releasing; cause lightning protection for power supply to burn; and power source surge protector of the present utility model adopts many valve blocks parallel technology; effectively improved its through-current capability; and every zinc oxide valve plate all has independently thermal tripping mechanism, and the single tripping mechanism of comparing traditional Surge Protector has higher protection reliability and fail safe.
2, the hot trip point of conventional power source lightning protection device is threaded off temperature required higherly, can't realize accurate protection, and causing this situation main cause is the selection of welding material and welding procedure.And the utility model adopts low temperature " cold welding connects " technology; not only solve the defective of the hot trip point of traditional Surge Protector but also reduced the overheated accumulated time of valve block; also reduced the aging infringement to valve block, trip speed is accelerated when making fault, can break away from electrical network effectively fast.
3, warm standby function has solved and has failed in time to change the secondary damage that causes after traditional Surge Protector damages.
4, the remote signalling control unit is realized remote control function, can monitor surge online information in real time by control outlet teletransmission to the control room after Surge Protector damages.
5, unique hub-and-spoke configuration designs; solved the shortcoming that Surge Protector in the market is very easily aging, leakage current is big; gas discharge tube and the protected mode that has increased Surge Protector cooperating of zinc oxide; comparing protected mode (is the common mode protected mode with product in the market in the vertical protection pattern of phase and ground; realize by gas discharge tube module 2) under increased the cross-protection pattern (be the differential mode protected mode, realize by three zinc oxide modules 1) of phase and phase.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. low-pressure side power source surge protector; it is characterized in that; it comprises three zinc oxide modules and a gas discharge tube module; the end that one end of these three zinc oxide modules all is electrically connected at this gas discharge tube module forms star-like connection; and formation connecting to neutral terminal; the other end of these three zinc oxide modules forms three phase terminal respectively; these three phase terminal can be electrically connected at three buses of three phase mains respectively; the connecting to neutral terminal can be electrically connected at the zero line of this three phase mains, the electrical ground connection of the other end of this gas discharge tube module.
2. low-pressure side power source surge protector as claimed in claim 1 is characterized in that, each zinc oxide module comprises:
The zinc oxide valve plate unit, it comprises three zinc oxide valve plates, an end of these three zinc oxide valve plates is electrically connected at this connecting to neutral terminal;
The first dropout actuating mechanism, it comprises these three the first hotness circuit breakers and this three first overcurrent protectors, one end of these three first overcurrent protectors is electrically connected at the other end of these three zinc oxide valve plates respectively, the other end of these three first overcurrent protectors is electrically connected at an end of these three the first hotness circuit breakers respectively, and the other end of these three the first hotness circuit breakers is electrically connected at corresponding phase terminal;
The first fault Tip element;
The first remote signalling control unit; it comprises first single-pole double-throw switch (SPDT); one of them moved end of this first single-pole double-throw switch (SPDT) is normally opened contact and is connected in this first fault Tip element; the controlled end of this first single-pole double-throw switch (SPDT) is connected in these three the first hotness circuit breakers and this three first overcurrent protectors; and in these three the first hotness circuit breakers and this three first overcurrent protectors at least one be when disconnecting, and this first single-pole double-throw switch (SPDT) switches to start this first fault Tip element points out.
3. low-pressure side power source surge protector as claimed in claim 2; it is characterized in that; this low-pressure side power source surge protector also comprises three first fire-retardant protecting crusts; this zinc oxide module of each first fire-retardant protecting crust encapsulation; each first fire-retardant protecting crust offers display window, and the first fault Tip element that is encapsulated in this first fire-retardant protecting crust can see through corresponding display window prompting and show.
4. low-pressure side power source surge protector as claimed in claim 2; it is characterized in that; the hot trip point of each first hotness circuit breaker connects by cold welding and forms normally off, and the hot trip point of each first overcurrent protector also connects by cold welding and forms normally off.
5. low-pressure side power source surge protector as claimed in claim 2 is characterized in that, this gas discharge tube module comprises:
Gas discharge tube, the electrical ground connection of one end;
The second dropout actuating mechanism, it comprises the second hotness circuit breaker and second overcurrent protector, one end of this second overcurrent protector is electrically connected at the other end of this gas discharge tube, the other end of this second overcurrent protector is electrically connected at an end of this second hotness circuit breaker, and the other end of this second hotness circuit breaker is electrically connected at this connecting to neutral terminal;
The second fault Tip element;
The second remote signalling control unit; it comprises second single-pole double-throw switch (SPDT); one of them moved end of this second single-pole double-throw switch (SPDT) is normally opened contact and is connected in this second fault Tip element; the controlled end of this second single-pole double-throw switch (SPDT) is connected in this second hotness circuit breaker and this second overcurrent protector; and in this second hotness circuit breaker and this second overcurrent protector at least one be when disconnecting, and this second single-pole double-throw switch (SPDT) switches to start this second Tip element points out.
6. low-pressure side power source surge protector as claimed in claim 5; it is characterized in that; this low-pressure side power source surge protector also comprises the second fire-retardant protecting crust; this second fire-retardant protecting crust encapsulates this gas discharge tube module; this second fire-retardant protecting crust offers display window, and the second fault Tip element that is encapsulated in this second fire-retardant protecting crust can see through this display window prompting and show.
7. low-pressure side power source surge protector as claimed in claim 5; it is characterized in that; this low-pressure side power source surge protector also comprises current sample instrument transformer and protection action counting module; the sampling end of this current sample instrument transformer is electrically connected at an end of this gas discharge tube ground connection, and the output of this current sample instrument transformer is electrically connected at this protection action counting module.
8. low-pressure side power source surge protector as claimed in claim 5 is characterized in that, the hot trip point of this second hotness circuit breaker connects by cold welding and forms normally off, and the hot trip point of this second overcurrent protector also connects by cold welding and forms normally off.
9. low-pressure side power source surge protector as claimed in claim 5 is characterized in that, all connecting to neutral terminals adopt the red copper bus-bar to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110545 CN203180512U (en) | 2013-03-12 | 2013-03-12 | Low tension side power supply surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110545 CN203180512U (en) | 2013-03-12 | 2013-03-12 | Low tension side power supply surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180512U true CN203180512U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320110545 Expired - Fee Related CN203180512U (en) | 2013-03-12 | 2013-03-12 | Low tension side power supply surge protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN203180512U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487208A (en) * | 2016-11-28 | 2017-03-08 | 阳光电源股份有限公司 | A kind of inverter ac cable suppressing method of common-mode voltage and device over the ground |
| CN106841888A (en) * | 2016-10-17 | 2017-06-13 | 垂德尔塔麦登沙有限公司 | Surgesuppressor supervising device and the monitoring system including supervising device |
| CN111584175A (en) * | 2020-05-25 | 2020-08-25 | 常州市武进科华电力电子器材有限公司 | Low-voltage surge protector |
| US11251598B2 (en) | 2020-01-10 | 2022-02-15 | General Electric Technology Gmbh | Gas discharge tube DC circuit breaker |
-
2013
- 2013-03-12 CN CN 201320110545 patent/CN203180512U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841888A (en) * | 2016-10-17 | 2017-06-13 | 垂德尔塔麦登沙有限公司 | Surgesuppressor supervising device and the monitoring system including supervising device |
| CN106487208A (en) * | 2016-11-28 | 2017-03-08 | 阳光电源股份有限公司 | A kind of inverter ac cable suppressing method of common-mode voltage and device over the ground |
| CN106487208B (en) * | 2016-11-28 | 2018-12-28 | 阳光电源股份有限公司 | The suppressing method and device of a kind of inverter ac cable common-mode voltage over the ground |
| US11251598B2 (en) | 2020-01-10 | 2022-02-15 | General Electric Technology Gmbh | Gas discharge tube DC circuit breaker |
| CN111584175A (en) * | 2020-05-25 | 2020-08-25 | 常州市武进科华电力电子器材有限公司 | Low-voltage surge protector |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20150312 |
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| EXPY | Termination of patent right or utility model |