CN2554852Y - Pole protection switch for low-voltage electric power distribution line - Google Patents
Pole protection switch for low-voltage electric power distribution line Download PDFInfo
- Publication number
- CN2554852Y CN2554852Y CN 02221719 CN02221719U CN2554852Y CN 2554852 Y CN2554852 Y CN 2554852Y CN 02221719 CN02221719 CN 02221719 CN 02221719 U CN02221719 U CN 02221719U CN 2554852 Y CN2554852 Y CN 2554852Y
- Authority
- CN
- China
- Prior art keywords
- switch
- automatic air
- break switch
- electric power
- lower pressure
- 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
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a protection-type switch unit used for a 380 V low-tension power distribution line, which can be used for transformer protection, and sectional and partial power supply and power-off maintenance caused by the branch switch of a low-tension distribution line, and belongs to the field of low-tension power devices. The switch unit consists mainly of six parts of a case, an automatic air switch, a coincident switch, a remote control operation apparatus, an emergency hand switch, and a state indicating mechanism. The upper pile head of the automatic air switch is of an incoming line, the lower pile head of the automatic air switch is connected with a user or a load, the coincident switch is connected with the off and on connector pile heads 2 and 3 of the automatic air switch, the indicating lamp of the state indicating mechanism is connected with the auxiliary contact of the automatic air switch, a literal signal instrument at the right side of the case is fixed and connected with the operation handle of the automatic air switch, the emergency hand switch consisting of two position switches and the output of the remote control apparatus are connected with the off and on connector pile heads 2 and 3 in parallel.
Description
Technical field: the utility model relates to a kind of protection type complete switch equipment that uses in 380 volts of low-voltage power distribution lines, it can be used for tranformer protection and the low-voltage distributing line branch switch is realized segmentation, burst power supply and interruption maintenance, belongs to the electrical equipment of low voltage field.
Technical background: existing rural area, city part resident and small-sized electricity consumer, all can not oneself build special-purpose switchgear house, they adopt traditional distribution system electricity consumption usually, that is: 10KV circuit-order gram-transformer-user.Without any protection equipment,, will cause transformer to damage on the transformer, seriously also can influence or damage the 10KV circuit if short circuit or overload appear in the user.As need the part low-voltage circuit is overhauled, need on high-tension side gram or the circuit breaker of making of operating transformer that whole transformer is stopped transport, form full load and get rid of, can not segmentation, burst has a power failure, even exist on-load to draw the danger of order button or operating breaker; And misoperation takes place in inconvenient operation easily.Existing electronic type reclosing, its technology is immature, poor anti jamming capability, it is unreliable to work, and the dynamo-electric life-span is low.
Summary of the invention: the utility model purpose is to overcome the problem that exists in existing 380V distribution, operation and the management, invent a kind of good looking appearance, ventilation, rainproof, antijamming capability strong, electric power protection switch on the reliable operation, the dynamo-electric lower pressure column that the life-span is long, remote control distance is far away, economic, practical.
The purpose of this utility model is finished like this: electric power protection switch on the lower pressure column, electric power protection switch on the lower pressure column of partly forming by casing and electrical control two, the feature of electrical control is reclosing device (D), positioning indicator (E), automatic air-break switch (A), urgent hand switch (C) and remote beepbox (B) are formed, wherein the last pile crown of automatic air-break switch (A) is an inlet wire, following pile crown is connected with user or load, reclosing device (D) " closes " wiring pile crown " 2 " with " branch " of automatic air-break switch (A), " 3 " connect, the display lamp of positioning indicator (E) and automatic air-break switch (A) auxiliary contact (QF1, QF2) connect, the literal written instructions device and the automatic air-break switch operating grip on casing right side are connected, by two travel switch (XW1, XW2) output of urgent hand switch (C) of Zu Chenging and remote beepbox (B) inserts automatic air-break switch (A) " branch " and " closes " wiring pile crown " 2 ", " 3 " parallel connection; The reclosing device is made up of the relay (1KT, 2KT) of two groups of band time-delay heads; The reclosing signal is to be provided by automatic air-break switch Alarm contactor (QFJ), and dividing, close the reclosing function is often to open attached contact (QF3), relay (K1, K2), motor (M) and the long-distance remote control device (YK) of helping by relay (1KT, 2KT), travel switch (XW1, XW2), the automatic air-break switch of band time-delay head to finish; Indicator light in the positioning indicator joins with the attached normally closed attached contact (QF2) that helps of contact (QF1) and automatic air-break switch that helps of often opening of automatic air-break switch respectively; Literal indication in the positioning indicator is made of in regular turn pointer, power transmission shaft, hold-down nut, driving sleeve, connecting rod and automatic air-break switch operating grip; Automatic air-break switch is made up of air switch (QS), motor (M), attached attached normally closed attached contact (QF2), the latching relay (K1, K2) of helping of contact (QF1), automatic air-break switch that help of often opening of contact (QFJ), automatic air-break switch that help of automatic air-break switch warning; Urgent hand switch is made up of two travel switches (XW1, XW2) and draw ring, connecting rod; The operating voltage of the relay (1KT, 2KT) of band time-delay head should be consistent with automatic air-break switch (QS), motor (M) operating voltage, long-distance remote control device (YK) and travel switch (XW1, XW2) operating voltage; Casing is by wide: height: dark-
The ratio shape design, the casing both sides have the shutter of band rainwater protective cover, the top cover that stretches out eaves is arranged at the casing top, outlet wiring pile crown is for being fit to the pancake structure of wiring nose crimping.
The utility model operation principle is: automatic air-break switch is made up of air switch (QS), motor (M), attached attached normally closed attached contact (QF2), the latching relay (K1, K2) of helping of contact (QF1), automatic air-break switch that help of often opening of contact (QFJ), automatic air-break switch that help of automatic air-break switch warning.Its effect is artificial purposive power supply or fault (overload, short circuit) tripping operation, protection power equipment and the personal safety of blocking.
The reclosing device is made up of the relay (1KT, 2KT) of two band time-delay heads, and its circuit connecting method as shown in Figure 4.Its operation principle is air switch (QS) tripping operation when load overload or short circuit, automatic air-break switch Alarm contactor (QFJ) closure, the relay (1KT) of band time-delay head is through time-delay 15s, drive latching relay (K1) actuating motor (M) and realize the impermanency fault is closed a floodgate, permanent fault can't be closed a floodgate.Meanwhile, the relay (2KT) of band time-delay head blocks automatic air-break switch Alarm contactor (QFJ) signal through delaying time and disconnecting, after realizing user's fault (overload or short circuit), guarantee No. 1 time reclosing,, provide indication permanent fault to the power supply of impermanency automatically restoring fault.The relay (1KT, 2KT) of band time-delay head is wanted selected technology maturation, reliable operation, long model of strong, dynamo-electric life-span of antijamming capability, and its operating voltage should be consistent with automatic air-break switch (QS), motor (M) operating voltage, long-distance remote control device (YK) and travel switch (XW1, XW2) operating voltage.
The characteristics of reclosing device (D) are relay (1KT, the 2KT) formations by two groups of band time-delay heads, finish fault-time-delay-reclosing-real control when resetting, and realize only No. 1 reclosing.
Long-distance remote control device (YK) is made up of receiver and hand-held remote controller, by radio wave transmission and reception, makes automatic air-break switch obtain " branch ", " closing " signal, and its effect is to finish remote " branch ", the operation of " closing " lock.Meanwhile, can obtain different frequency of operation, realize hand-held remote controller and protection switch one-one relationship, avoid misoperation by adjusting the radio wave frequency.Therefore, when selecting remote-control apparatus for use, must select have property highly one to one, antijamming capability is strong, remote control distance is far away high-frequency digital communication type.
Urgent hand switch is made up of two travel switches (XW1, XW2) and draw ring, connecting rod.Travel switch will have a pair of often opening with a pair of normally closed, and can automatically reset.Urgent hand switch is a remote-control apparatus when breaking down, and the device that carries out " branchs ", " closing " operation is in parallel with the long-distance remote control operating means, for the raising operating reliability is provided with.
Casing is one and externally shows body, installs, holds, protect the carrier of various components and parts, because the utility model is to use in the environment in the open, so casing must have screening rain, ventilation, waterproof, function such as antirust and attractive in appearance.This casing is with wide: height: dark=
Ratio design, strengthen the ornamental of its profile, the left and right side design has with protecting cover shutter, strengthens and ventilates and water-resistant performance.
The utility model switch has that antijamming capability is strong, reliable operation, the dynamo-electric life-span is long, remote control distance is far away, simple in structure, the uncomplicated advantage of circuit, can improve low-voltage distribution technical merit and management of power use level effectively, improve the cities and towns power supply reliability, related components and parts and material all can be bought on the dynamo-electric at home market, and making is easy, cost is low.
Description of drawings: below in conjunction with accompanying drawing, be described further, but the utility model protection range is not limited to embodiment with regard to the utility model structure.
Fig. 1 is the operation principle flow chart of the utility model lower pressure column transformer electric power protection switch.
Fig. 2 is the front view of the utility model lower pressure column transformer electric power protection switch casing.
Fig. 3 is the left view of the utility model lower pressure column transformer electric power protection switch casing.
Fig. 4 is a reclosing device circuit diagram in the utility model lower pressure column transformer electric power protection switch.
Fig. 5 is a positioning indicator word indicating structural representation in the utility model lower pressure column transformer electric power protection switch.
Fig. 6 is the utility model lower pressure column transformer electric power protection switch designs circuit connection diagram.
Embodiment: make casing by Fig. 2, Fig. 3, the size of casing (1) is selected wide: height: dark=
Top cover is wide to be that casing is long 2 times really, and wide is dark 2 times of casing.Make the utility model switch by circuit diagram shown in Figure 6, wherein automatic air-break switch (QS) is selected SM30-P/3348 or NS Series P/3348 for use; The relay (1KT, 2KT) of band time-delay head is selected JZC3-40d+SK4-22d for use; Remote beepbox (YK) is selected YK-2 for use; Travel switch (XW1, XW2) is selected LX19-121 for use.
The utility model design important technological parameters: rated voltage: AC380V, rated current: 160A ~ 800A; The overcurrent actuating range: 1～5 times, (stipulated time is 1s ~ 2h) to overcurrent operate time: 1s ~ 1000s; Quick-break action multiple: 2～10 times, quick-break operate time＜1s; Single shot reclosing time: 15s～20s (can adjust); Remote control distance 〉=20m; Quality: 35kg; Mechanical endurance 12000 times; Electric life: 8000 times; Insulation resistance: 85M Ω.
The utility model design circuit connection layout as shown in Figure 6, wherein A is air switch and motor-operating mechanism; B is the straighforward operation signal receiver; C is urgent manual switch circuit; D is the reclosing electric control circuit; E is the status indicator lamp circuit.
The overload of automatic air-break switch is delayed time (or inverse time lag) but protection, short circuit instantaneous trip characteristic and electric operating function mainly are made up of six parts: casing: automatic air-break switch; Reclosing mechanism; The long-distance remote control operating means; Urgent hand switch; State indicating mechanism.
The utility model technology has following characteristics: have overload, short-circuit protection and single shot reclosing merit Can, avoid user's short circuit, transship and cause the transformer damage and the impermanency fault is realized reclosing; Insulation and withstand voltage properties height, antijamming capability is strong. Remote control branch, closing operation are realized man-machine isolation, peace Full dependable performance; The remote control cipher operation forms hand-held remote controller and protection switch height one-one relationship, Has good anti-misoperation function; Easy to operate, can be inside and outside 20m remote control branch, closing operation, and With the emergency manual switch in parallel, divide, close the reliability height; Scheme is flexible, can make according to customer requirements Metering type, offset-type improve electric energy management level and power supply reliability; To town dweller and small-sized usefulness The family can at the protection switch of step down side, many of branch line installations or multichannel outlet, be realized dividing Sheet, sectional power supply, power failure, maintenance function are avoided building switchgear house, are bought switch cubicle or box change The power station reduces the distribution construction cost.
The 1-casing; The 2-nameplate; The 3-indicator lamp; The 4-door lock; 5-installs link plate; The 6-inlet wire connects The line pile crown; 7-outlet wiring pile crown; The 8-top cover; 9-duty literal indicator; 10-hundred The leaf window; Operating grip is closed in the beginning of 11-automatic air; The 12-connecting rod; The 13-connecting rod; The 14-power transmission shaft Cover; The 15-hold-down nut; The 16-power transmission shaft; The 17-pointer. The relay of 1KT-band time-delay head; 2KT The relay of-band time-delay head; The XW1-travel switch; The XW2-travel switch; The K1-latching relay Machine; The K2-latching relay; The M-motor; QFJ-automatic air-break switch Alarm contactor; YK-Remote controller; The QF1-automatic air-break switch often open the attached contact that helps; QF2-automatic air-break switch normally closed The attached contact that helps; The QF3-automatic air-break switch is often opened the attached contact that helps; The QS-air switch;
Claims (8)
1; electric power protection switch on the lower pressure column; partly form by casing (1) and electrical control two; the feature of electrical control is reclosing device (D); positioning indicator (E); automatic air-break switch (A); urgent hand switch (C) and remote beepbox (B) are formed; wherein the last pile crown of automatic air-break switch (A) is an inlet wire; following pile crown is connected with user or load; reclosing device (D) " closes " wiring pile crown " 2 " with " branch " of automatic air-break switch (A); " 3 " connect; the display lamp of positioning indicator (E) and automatic air-break switch (A) auxiliary contact (QF1; QF2) connect; the literal written instructions device and the automatic air-break switch operating grip on casing right side are connected, by two travel switch (XW1; XW2) output of urgent hand switch (C) of Zu Chenging and remote beepbox (B) inserts automatic air-break switch (A) " branch " and " closes " wiring pile crown " 2 "; " 3 " parallel connection.
2,, it is characterized in that reclosing device (D) is made up of the relay (1KT, 2KT) of two groups of bands time-delay heads according to electric power protection switch on the lower pressure column of claim 1.
3, according to electric power protection switch on claim 1 and the 2 described lower pressure column; it is characterized in that the reclosing signal is to be provided by automatic air-break switch Alarm contactor (QFJ), dividing, close the reclosing function is often to open attached contact (QF3), relay (K1, K2), motor (M) and the long-distance remote control device (YK) of helping by relay (1KT, 2KT), travel switch (XW1, XW2), the automatic air-break switch of band time-delay head to finish.
4, electric power protection switch on the lower pressure column according to claim 1 is characterized in that the indicator light (3) in the positioning indicator joins with the attached normally closed attached contact (QF2) that helps of contact (QF1) and automatic air-break switch that helps of often opening of automatic air-break switch respectively; Literal indication in the positioning indicator is made of in regular turn pointer (17), power transmission shaft (16), hold-down nut (15), driving sleeve (14), connecting rod (12,13) and automatic air-break switch operating grip (11).
5, electric power protection switch on the lower pressure column according to claim 1 is characterized in that automatic air-break switch is made up of air switch (QS), motor (M), automatic air-break switch attached attached normally closed attached contact (QF2), the latching relay (K1, K2) of helping of contact (QF1), automatic air-break switch that help of often opening of contact (QFJ), automatic air-break switch that help of reporting to the police.
6, electric power protection switch on the lower pressure column according to claim 1 is characterized in that urgent hand switch is made up of two travel switches (XW1, XW2) and draw ring, connecting rod.
7, electric power protection switch on the lower pressure column according to claim 1 and 2, it is characterized in that should be consistent with automatic air-break switch (QS), motor (M) operating voltage, long-distance remote control device (YK) and travel switch (XW1, XW2) operating voltage with the operating voltage of the relay (1KT, 2KT) of time-delay head.
8, electric power protection switch on the lower pressure column according to claim 1 is characterized in that casing (1) is by wide: height: dark-
The ratio shape design, casing (1) both sides have the shutter (10) of band rainwater protective cover, the top cover (8) that stretches out eaves is arranged at the casing top, outlet wiring pile crown (7) is for being fit to the pancake structure of wiring nose crimping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221719 CN2554852Y (en) | 2002-02-26 | 2002-02-26 | Pole protection switch for low-voltage electric power distribution line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221719 CN2554852Y (en) | 2002-02-26 | 2002-02-26 | Pole protection switch for low-voltage electric power distribution line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2554852Y true CN2554852Y (en) | 2003-06-04 |
Family
ID=33699770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02221719 Expired - Fee Related CN2554852Y (en) | 2002-02-26 | 2002-02-26 | Pole protection switch for low-voltage electric power distribution line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2554852Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
| CN109066603A (en) * | 2018-09-12 | 2018-12-21 | 深圳市科信通信技术股份有限公司 | A kind of low-voltage distribution system |
-
2002
- 2002-02-26 CN CN 02221719 patent/CN2554852Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
| CN109066603A (en) * | 2018-09-12 | 2018-12-21 | 深圳市科信通信技术股份有限公司 | A kind of low-voltage distribution system |
| CN109066603B (en) * | 2018-09-12 | 2024-05-03 | 深圳市科信通信技术股份有限公司 | Low-voltage power distribution system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201590374U (en) | Outdoor high-voltage intelligent demarcation vacuum circuit breaker | |
| CN104037011A (en) | Watchdog division load switch | |
| CN108400054A (en) | A kind of outdoor vacuum circuit breaker control system | |
| CN102904202A (en) | Intelligent re-closing circuit breaker | |
| CN204497853U (en) | A kind of photovoltaic case becomes protection telemetry communication integrated apparatus | |
| CN204966375U (en) | Vacuum circuit breaker on intelligence post | |
| CN203659733U (en) | Outdoor high-voltage demarcation vacuum circuit breaker | |
| CN216671484U (en) | 12kV degree of depth once or twice fuses circuit breaker | |
| CN2554852Y (en) | Pole protection switch for low-voltage electric power distribution line | |
| CN110098092A (en) | A kind of the two poles of the earth miniature circuit breaker | |
| CN205303310U (en) | Outdoor column vacuum breaker | |
| CN217086501U (en) | Intelligent safety reclosing circuit breaker | |
| CN202796772U (en) | 10kV rapid intelligent column breaker | |
| CN114496673A (en) | Intelligent security reclosing circuit breaker | |
| CN201655651U (en) | Looped network breakpoint intelligent isolation switch | |
| CN201877790U (en) | Circuit with functions of two-polar leakage protection and overvoltage/undervoltage protection | |
| CN108233244B (en) | 35kV prepayment metering complete device | |
| CN204905675U (en) | Outdoor switch box with distribution fault handling function | |
| CN2548256Y (en) | High pressure measurement reset mechanism | |
| CN207588261U (en) | A kind of gas-insulated enclosed switchgear | |
| CN202957477U (en) | Outdoor switch box capable of achieving power distribution fault handling capability matched with relay protection | |
| CN2753024Y (en) | Variable table type box station | |
| CN201359979Y (en) | Residual current circuit breaker with automatic reclosing function | |
| CN201732995U (en) | High-voltage metering cubicle | |
| CN2613915Y (en) | Intelligent comprehensive protector with programmable control and interface display for high/low voltage distribution switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |