CN201877818U - Thunder surge protection mechanism of TT system - Google Patents
Thunder surge protection mechanism of TT system Download PDFInfo
- Publication number
- CN201877818U CN201877818U CN2010206311209U CN201020631120U CN201877818U CN 201877818 U CN201877818 U CN 201877818U CN 2010206311209 U CN2010206311209 U CN 2010206311209U CN 201020631120 U CN201020631120 U CN 201020631120U CN 201877818 U CN201877818 U CN 201877818U
- Authority
- CN
- China
- Prior art keywords
- thunder
- lightning surge
- surge protector
- dbm
- utmost points
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a thunder surge protection mechanism of a TT system. The TT system consists of three levels: a general power distribution box, a sub power distribution box and equipment, wherein the general power distribution box is provided with a four-pole thunder surge protector; four poles of the four-pole thunder surge protector are respectively connected to phase lines L1, L2 and L3 and a protective earth wire PE; the earth terminal of the four-pole thunder surge protector is connected to a neutral line N of the general power distribution box; the sub power distribution box is provided with another four-pole thunder surge protector; four poles of the four-pole thunder surge protector are respectively connected to the phase lines L1, L2 and L3 and the neutral line N; the earth terminal of the four-pole thunder surge protector is connected to the protective earth wire PE; the equipment is provided with a two-pole thunder surge protector, two poles of which are respectively connected to a phase line L and the neutral line N; and the earth terminal of the two-pole thunder surge protector is connected to the protective earth wire PE. The thunder surge protection mechanism solves the problem of protecting the circuit system when all levels of structures in a low voltage power distribution TT system encounter with thunder surge, and is beneficial to protecting the use safety of all equipment and devices in the system, as well as the personal safety of users.
Description
Technical field
The utility model relates to the thunder and lightning surge protector, the thunder and lightning surge protection mechanism of particularly a kind of TT system.
Background technology
Surge is a kind of of short duration electric current, the voltage fluctuation that occurs in the circuit.In circuit, continue about microsecond usually.Continue 5,000～10 of moment (microsecond) in the low-voltage power supply system, the voltage fluctuation of 000V is surge.It is from two aspects: external surge and inner surge.
The topmost source of external surge is a thunder and lightning.Charge potential between thundercloud layer and ground is up to hundred ten thousand volts, when thunderbolt takes place,, returns cloud layer through equipment and the earth that it punctured, thereby finished the path of thunder and lightning by lightning discharge with the electric current of hundreds of kilo-amperes.Near the power line if thunder and lightning has hit, the part electric current will enter building along the line, and the electric current that this strand is huge will directly seal in power consumption equipment, and the insulation that destroys electric equipment causes the damage of electric equipment, and its speed is exceedingly fast, the omnidistance microsecond that only needs.Another source of external surge is the operation of the utility network of Utilities Electric Co., the overvoltage that produces on power line.
The thunder and lightning surge head and shoulders above the overvoltage level that can bear of computer and other electric equipment, in most cases, cause the breaking-up at once of computer and other electric equipment, or the losing forever of data.Even the startup of the small-sized inductor motor of a 20hp or close also and can produce 3,000～5, the surge of 000V all can be damaged or disturb the computer with its shared same distribution box in surge each time, and the number of times of this surge is very frequent.
What current people need consider is not only the thunder and lightning surge protection problem of certain electric equipment, but will further consider the thunder and lightning surge protection problem of low-voltage distribution system.Existing low-voltage distribution system mainly comprises: TN system (comprising TN-S, TN-C, TN-C-S), TT system, IT system, these systems all have consumer unit, divide the distributed architecture successively of distribution box and electric equipment.In the said system title, first letter representation power-supply system ground connection situation: T represents direct ground connection, and I represents earth-free; It is irrelevant that second letter represents that electric device earthing of casing situation: T represents with the power-supply system earth point, directly ground connection; N represents to be connected with the power-supply system earth point.The letter of first and second alphabetical back: S represents the neutral line (N) and protection ground wire (PE) ground connection respectively; C represents the neutral line and protection ground wire common ground (PEN).
As mentioned above, have only whole low-voltage distribution system is carried out rational thunder and lightning surge protection structural design and setting, just can guarantee to be connected the personal safety of the safe in utilization and user of each electric equipment in each system.
The utility model content
The purpose of this utility model is to provide the thunder and lightning surge protection mechanism of a kind of TT system; it mainly solve each hierarchical structure in the existing low-voltage distribution TT system run into the thunder and lightning surge time technical problem of protective circuit system how, help to protect the personal safety of the safe in utilization and user of each equipment and device in the TT system.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
The thunder and lightning surge protection mechanism of a kind of TT system, this TT system is made of consumer unit, branch distribution box and three levels of equipment, it is characterized in that: configuration four utmost point thunder and lightning surge protectors in the described consumer unit, four utmost points of this four utmost points thunder and lightning surge protector are connected respectively to phase line L1, L2, L3 and protection ground wire PE, and the earth terminal of this four utmost points thunder and lightning surge protector is connected on the neutral line N of consumer unit; Another four utmost points thunder and lightning surge protector of configuration in the described minute distribution box, four utmost points of this four utmost points thunder and lightning surge protector are connected respectively to phase line L1, L2, L3 and neutral line N, and the earth terminal of this four utmost points thunder and lightning surge protector is connected on the protection ground wire PE; Described equipment disposition two utmost point thunder and lightning surge protectors, two utmost points of this two utmost points thunder and lightning surge protector are connected respectively to phase line L and neutral line N, and the earth terminal of this two utmost points thunder and lightning surge protector is connected on the protection ground wire PE.
The thunder and lightning surge protection mechanism of described TT system is characterized in that: four utmost point thunder and lightning surge protectors of described consumer unit adopt DBM-80/385-4 or the DBM-60/385-4 or the DBM-60/275-3N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
The thunder and lightning surge protection mechanism of described TT system is characterized in that: four utmost point thunder and lightning surge protectors of described minute distribution box adopt the DBM-60/385-4 or the DBM-40/385-4 of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
The thunder and lightning surge protection mechanism of described TT system is characterized in that: described two utmost point thunder and lightning surge protectors adopt DBM-40/385-2 or DBM-20/385-2 or the DBM-40/275-1N or the DBM-20/275-1N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
The beneficial effects of the utility model are; the utility model is arranged in consumer unit, branch distribution box and three hierarchical structures of equipment of TT system by the classification of thunder and lightning surge protector; utilize the thunder and lightning surge protector of the classification setting thunder and lightning induction voltage of releasing layer by layer; progressively lower surge voltage, thus the protection ustomer premises access equipment.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
See also Fig. 1, it is the thunder and lightning surge protection mechanism of a kind of TT of the utility model system.As shown in the figure: this TT system is made of consumer unit 1, branch distribution box 2 and 3 three levels of equipment.Configuration four utmost point thunder and lightning surge protectors 41 in the described consumer unit 1, four utmost points of this four utmost points thunder and lightning surge protector 41 are connected respectively to phase line L1, L2, L3 and protection ground wire PE, and the earth terminal of this four utmost points thunder and lightning surge protector 41 is connected on the neutral line N of consumer unit 1; Another four utmost points thunder and lightning surge protector 42 of configuration in the described minute distribution box 2, four utmost points of this four utmost points thunder and lightning surge protector 42 are connected respectively to phase line L1, L2, L3 and neutral line N, and the earth terminal of this four utmost points thunder and lightning surge protector 42 is connected on the protection ground wire PE; Described equipment 3 configurations two utmost point thunder and lightning surge protectors 43, two utmost points of this two utmost points thunder and lightning surge protector 43 are connected respectively to phase line L and neutral line N, and the earth terminal of this two utmost points thunder and lightning surge protector 43 is connected on the protection ground wire PE.
Four utmost point thunder and lightning surge protectors 41 of described consumer unit 1 adopt DBM-80/385-4 or the DBM-60/385-4 or the DBM-60/275-3N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..Four utmost point thunder and lightning surge protectors 42 of described minute distribution box 2 adopt the DBM-60/385-4 or the DBM-40/385-4 of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..Described two utmost point thunder and lightning surge protectors 43 adopt DBM-40/385-2 or DBM-20/385-2 or the DBM-40/275-1N or the DBM-20/275-1N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
The utility model is provided with structural principle by the classification of thunder and lightning surge protector, utilizes the thunder and lightning surge protector of the classification setting thunder and lightning induction voltage of releasing layer by layer, progressively lowers surge voltage, thus the protection ustomer premises access equipment.The surge current that the thunder and lightning surge protector that the first order is joined in the system should bear lowers more step by step.
In sum, be preferred embodiment of the present utility model only, be not to be used for limiting practical range of the present utility model, promptly all equivalences of doing according to the content of the utility model claim change and modify, and all should be technology category of the present utility model.
Claims (4)
1. the thunder and lightning surge protection mechanism of a TT system, this TT system is made of consumer unit (1), branch distribution box (2) and (3) three levels of equipment, it is characterized in that: configuration four utmost point thunder and lightning surge protectors (41) in the described consumer unit (1), four utmost points of this four utmost points thunder and lightning surge protector (41) are connected respectively to phase line L1, L2, L3 and protection ground wire PE, and the earth terminal of this four utmost points thunder and lightning surge protector (41) is connected on the neutral line N of consumer unit (1); Described minute another four utmost points thunder and lightning surge protector (42) of the middle configuration of distribution box (2), four utmost points of this four utmost points thunder and lightning surge protector (42) are connected respectively to phase line L1, L2, L3 and neutral line N, and the earth terminal of this four utmost points thunder and lightning surge protector (42) is connected on the protection ground wire PE; Described equipment (3) configuration two utmost point thunder and lightning surge protectors (43), two utmost points of this two utmost points thunder and lightning surge protector (43) are connected respectively to phase line L and neutral line N, and the earth terminal of this two utmost points thunder and lightning surge protector (43) is connected on the protection ground wire PE.
2. the thunder and lightning surge protection mechanism of TT according to claim 1 system is characterized in that: four utmost point thunder and lightning surge protectors (41) of described consumer unit (1) adopt DBM-80/385-4 or the DBM-60/385-4 or the DBM-60/275-3N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
3. the thunder and lightning surge protection mechanism of TT according to claim 1 system is characterized in that: described minute distribution box (2) four utmost point thunder and lightning surge protectors (42) adopt the DBM-60/385-4 or the DBM-40/385-4 of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
4. the thunder and lightning surge protection mechanism of TT according to claim 1 system is characterized in that: described two utmost point thunder and lightning surge protectors (43) adopt DBM-40/385-2 or DBM-20/385-2 or the DBM-40/275-1N or the DBM-20/275-1N of Shanghai Jingda Power Voltage Regulator Manufacturing Co., Ltd..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206311209U CN201877818U (en) | 2010-11-30 | 2010-11-30 | Thunder surge protection mechanism of TT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206311209U CN201877818U (en) | 2010-11-30 | 2010-11-30 | Thunder surge protection mechanism of TT system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877818U true CN201877818U (en) | 2011-06-22 |
Family
ID=44165727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206311209U Expired - Fee Related CN201877818U (en) | 2010-11-30 | 2010-11-30 | Thunder surge protection mechanism of TT system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144748A (en) * | 2017-06-02 | 2017-09-08 | 重庆大学 | The Earthing Reliability monitoring method and its system of TT systems based on Injection Signal |
-
2010
- 2010-11-30 CN CN2010206311209U patent/CN201877818U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144748A (en) * | 2017-06-02 | 2017-09-08 | 重庆大学 | The Earthing Reliability monitoring method and its system of TT systems based on Injection Signal |
| CN107144748B (en) * | 2017-06-02 | 2019-09-10 | 重庆大学 | The Earthing Reliability monitoring method and its system of TT system based on Injection Signal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gurevich | Cyber and electromagnetic threats in modern relay protection | |
| Sun et al. | Surge analysis for lightning strike on overhead lines of wind farm | |
| CN204190381U (en) | A kind of antisurge interference prevention device based on power meter reading system | |
| CN204793636U (en) | Family block terminal is shared to multi -functional terminal group | |
| CN201877818U (en) | Thunder surge protection mechanism of TT system | |
| CN201877817U (en) | Thunder surge protection mechanism of TN-C-S system | |
| CN201877819U (en) | Lightning surge protection mechanism of IT system | |
| Li et al. | Lightning transient characteristics of cable power collection system in wind power plants | |
| Goh et al. | A review of lightning protection system-Risk assessment and application | |
| CN205921008U (en) | A prevent battery inflation protection architecture for cable grounding box | |
| CN202616544U (en) | Terminal PC (personal computer) multifunctional lightning protection socket | |
| CN105977908B (en) | Unmanned plane can recover DC over-voltage protection circuit automatically | |
| CN203674710U (en) | Intelligent lightning-protection RS-485 wiring instrument | |
| Nappu et al. | A specific modeling of ground protection system for wind power plants | |
| Radhika et al. | Back flashover analysis improvement of a 220kV transmission line | |
| CN102931592A (en) | Lightning-protection power distribution cabinet | |
| CN207910443U (en) | A kind of household protection against electric shock stacked switch | |
| CN206533124U (en) | It is a kind of to record automatically by the general lightning protection device of high resistance ground line of number of lightning strokes | |
| CN202633933U (en) | Surge protector circuit of low-voltage power supply | |
| CN203218878U (en) | Intelligent grounding line selection and fault management system for power distribution network | |
| CN2492932Y (en) | Power cord with anti-jamming protector | |
| CN207320827U (en) | A kind of wisdom circuit light adjusting controller lightning protection circuit with RS485 technologies | |
| CN204633323U (en) | A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof | |
| CN202737458U (en) | Civilian electricity network lightning protector | |
| CN202797944U (en) | Surge protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20121130 |