CN204045532U - Prevent voltage transformer secondary side anti-charge device - Google Patents
Prevent voltage transformer secondary side anti-charge device Download PDFInfo
- Publication number
- CN204045532U CN204045532U CN201420354524.6U CN201420354524U CN204045532U CN 204045532 U CN204045532 U CN 204045532U CN 201420354524 U CN201420354524 U CN 201420354524U CN 204045532 U CN204045532 U CN 204045532U
- Authority
- CN
- China
- Prior art keywords
- phase
- air switch
- voltage transformer
- moving contact
- spring
- 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
- 238000005485 electric heating Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Breakers (AREA)
Abstract
The utility model relates to voltage transformer resist technology, and specifically one prevents voltage transformer secondary side anti-charge device.The utility model solves existing voltage transformer resist technology and cannot thoroughly prevent voltage transformer from occurring the problem of reverse charge phenomenon.Prevent voltage transformer secondary side anti-charge device, comprise three-phase air switch, the first spring, locking bar, bearing, lever, push rod, bimetal leaf, electric heating element, reverse charge release, overcurrent release, device for under-voltage releasing equipment, the second spring; Wherein, the right-hand member of the first spring and the first-phase moving contact of three-phase air switch are fixed; The left part side of locking bar is fixed with the first-phase moving contact of three-phase air switch, second-phase moving contact, third phase moving contact respectively; The right-hand member of locking bar is provided with the first hook portion; The left end of lever is provided with the second hook portion, and the second hook portion and the mutual clasp joint of the first hook portion; The right-hand member of lever is articulated with on bearing.The utility model is applicable to electrical network.
Description
Technical field
The utility model relates to voltage transformer resist technology, and specifically one prevents voltage transformer secondary side anti-charge device.
Background technology
Voltage transformer is one of nucleus equipment of electrical network.In actual applications, when carrying out interruption maintenance to voltage transformer, voltage transformer there will be reverse charge phenomenon (namely the secondary side of voltage transformer charges to primary side), causes the person and equipment breakdown thus.Therefore, in order to avoid generation that is personal and equipment breakdown, usually following methods is adopted to prevent voltage transformer from occurring reverse charge phenomenon at present: the primary side isolating switch pulling open voltage transformer, and take off the primary side fuse of voltage transformer, pull open the secondary side air switch of voltage transformer, and take off the secondary side fuse of voltage transformer, then on the primary side conductor of voltage transformer, install earth connection.But practice shows, said method is too loaded down with trivial details owing to operating, cause its be easy in actual applications to occur switching manipulation error (though such as secondary side air switch do not pull open, insure do not take off, secondary side air switch has pulled open but reality does not disconnect, the conversion of secondary side auxiliary switch is bad) and earth connection slip up (such as install mistake, neglected loading, installing is lack of standardization cause loose contact etc.), cause it cannot thoroughly prevent voltage transformer from occurring reverse charge phenomenon thus, thus thoroughly cannot avoid the generation of the person and equipment breakdown.Based on this, be necessary to invent a kind of brand-new voltage transformer protection device, cannot thoroughly prevent voltage transformer from occurring the problem of reverse charge phenomenon to solve existing voltage transformer resist technology.
Summary of the invention
The utility model cannot thoroughly prevent voltage transformer from occurring the problem of reverse charge phenomenon to solve existing voltage transformer resist technology, provides one and prevents voltage transformer secondary side anti-charge device.
The utility model adopts following technical scheme to realize: prevent voltage transformer secondary side anti-charge device, comprise three-phase air switch, the first spring, locking bar, bearing, lever, push rod, bimetal leaf, electric heating element, reverse charge release, overcurrent release, device for under-voltage releasing equipment, the second spring; Wherein, the right-hand member of the first spring and the first-phase moving contact of three-phase air switch are fixed; The left part side of locking bar is fixed with the first-phase moving contact of three-phase air switch, second-phase moving contact, third phase moving contact respectively; The right-hand member of locking bar is provided with the first hook portion; The left end of lever is provided with the second hook portion, and the second hook portion and the mutual clasp joint of the first hook portion; The right-hand member of lever is articulated with on bearing; The top, upper surface of push rod is pressed on the side, middle part of lever; The side, middle part of push rod is provided with the first radial protrusion portion, the second radial protrusion portion, the 3rd radial protrusion portion from top to bottom successively; The right-hand member upper surface of bimetal leaf and the lower surface of push rod are pressed close to; The lower surface of electric heating element and bimetal leaf is pressed close to; The coil two ends of reverse charge release are connected with the second-phase fixed contact two ends of three-phase air switch respectively; The armature movable end of reverse charge release and the lower surface in the first radial protrusion portion are pressed close to; Coil one end of overcurrent release is connected with the third phase fixed contact lower end of three-phase air switch by electric heating element; The armature movable end of overcurrent release and the lower surface in the second radial protrusion portion are pressed close to; The coil two ends of device for under-voltage releasing equipment are connected with the first-phase fixed contact lower end of three-phase air switch and second-phase fixed contact lower end respectively; The armature movable end of device for under-voltage releasing equipment and the lower surface in the 3rd radial protrusion portion are pressed close to; The lower end of the second spring and the armature of device for under-voltage releasing equipment are fixed.
During work, the first-phase fixed contact of three-phase air switch is serially connected in the first-phase of the secondary side circuit of voltage transformer.The second-phase fixed contact of three-phase air switch is serially connected in the second-phase of the secondary side circuit of voltage transformer.By the third phase of the coil tandem of the third phase fixed contact of three-phase air switch, electric heating element, overcurrent release at the secondary side circuit of voltage transformer.The upper end of the left end of the first spring, bearing, the second spring is all fixed on wall.Specific works process is as follows: one, when voltage transformer normally works, and the secondary side circuit of voltage transformer is in on-state.Now, the first-phase moving contact of three-phase air switch contacts with first-phase fixed contact, the second-phase moving contact of three-phase air switch contacts with second-phase fixed contact, the third phase moving contact of three-phase air switch contacts with third phase fixed contact, second hook portion and the mutual clasp joint of the first hook portion, the first spring is in extended state.Not generation current in the coil of reverse charge release, the armature of reverse charge release is in open mode.Generation current in the coil of overcurrent release, but the electromagnetic attraction that electric current produces is not enough to the armature adhesive of overcurrent release, and now the armature of overcurrent release is in open mode.Generation current in the coil of device for under-voltage releasing equipment, and the electromagnetic attraction that electric current produces can overcome the pulling force of the second spring and by the armature adhesive of device for under-voltage releasing equipment, now the second spring is in extended state.Two, when there is reverse charge phenomenon in voltage transformer, under the second-phase fixed contact of three-phase air switch, terminal voltage is higher than upper terminal voltage, generation current in the coil of reverse charge release, the electromagnetic attraction that electric current produces is by the armature adhesive of reverse charge release, the armature movable end of reverse charge release upwards clashes into the first radial protrusion portion, first radial protrusion portion drives push rod upwards pushing tow lever, lever upwards rotates, second hook portion is separated with the first hook portion, first spring resets, and drive the first-phase moving contact of three-phase air switch to be moved to the left, the first-phase moving contact of three-phase air switch and then drive second-phase moving contact and third phase moving contact to be moved to the left by locking bar.Now, the first-phase moving contact of three-phase air switch is separated with first-phase fixed contact, the second-phase moving contact of three-phase air switch is separated with second-phase fixed contact, the third phase moving contact of three-phase air switch is separated with third phase fixed contact, the secondary side circuit of voltage transformer disconnects thus, thus prevents reverse charge.Three, when there is over-current phenomenon avoidance in voltage transformer, overcurrent flows through the coil of overcurrent release, the electromagnetic attraction that overcurrent produces is by the armature adhesive of overcurrent release, the armature movable end of overcurrent release upwards clashes into the second radial protrusion portion, second radial protrusion portion drives push rod upwards pushing tow lever, lever upwards rotates, second hook portion and the first hook portion from, first spring resets, and drive the first-phase moving contact of three-phase air switch to be moved to the left, the first-phase moving contact of three-phase air switch and then drive second-phase moving contact and third phase moving contact to be moved to the left by locking bar.Now; the first-phase moving contact of three-phase air switch is separated with first-phase fixed contact; the second-phase moving contact of three-phase air switch is separated with second-phase fixed contact; the third phase moving contact of three-phase air switch is separated with third phase fixed contact; the secondary side circuit of voltage transformer disconnects thus, thus achieves overcurrent protection.Four, when there is under-voltage phenomenon in voltage transformer, electric current in the coil of device for under-voltage releasing equipment reduces, the electromagnetic attraction that electric current produces is less than the pulling force of the second spring, second spring resets, and the armature of device for under-voltage releasing equipment is pulled open, the armature movable end of device for under-voltage releasing equipment upwards clashes into the 3rd radial protrusion portion, 3rd radial protrusion portion drives push rod upwards pushing tow lever, lever upwards rotates, second hook portion and the first hook portion from, first spring resets, and drive the first-phase moving contact of three-phase air switch to be moved to the left, the first-phase moving contact of three-phase air switch and then drive second-phase moving contact and third phase moving contact to be moved to the left by locking bar.Now; the first-phase moving contact of three-phase air switch is separated with first-phase fixed contact; the second-phase moving contact of three-phase air switch is separated with second-phase fixed contact; the third phase moving contact of three-phase air switch is separated with third phase fixed contact; the secondary side circuit of voltage transformer disconnects thus, thus achieves under-voltage protection.Based on said process; compared with existing voltage transformer resist technology; the voltage transformer secondary side anti-charge device that prevents described in the utility model is by adopting brand new; eliminate loaded down with trivial details operation; therefore it there will not be switching manipulation error and earth connection error in actual applications; thoroughly prevent voltage transformer to occur reverse charge phenomenon thus, thus thoroughly avoid the generation of the person and equipment breakdown.
The utility model is rational in infrastructure, it is ingenious to design, and efficiently solves existing voltage transformer resist technology and cannot thoroughly prevent voltage transformer from occurring the problem of reverse charge phenomenon, be applicable to electrical network.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-three-phase air switch, 2-first spring, 3-locking bar, 4-bearing, 5-lever, 6-push rod, 7-bimetal leaf, 8-electric heating element, 9-reverse charge release, 10-overcurrent release, 11-device for under-voltage releasing equipment, 12-second spring.
Embodiment
Prevent voltage transformer secondary side anti-charge device, comprise three-phase air switch 1, first spring 2, locking bar 3, bearing 4, lever 5, push rod 6, bimetal leaf 7, electric heating element 8, reverse charge release 9, overcurrent release 10, device for under-voltage releasing equipment 11, second spring 12; Wherein, the right-hand member of the first spring 2 and the first-phase moving contact of three-phase air switch 1 are fixed; The left part side of locking bar 3 is fixed with the first-phase moving contact of three-phase air switch 1, second-phase moving contact, third phase moving contact respectively; The right-hand member of locking bar 3 is provided with the first hook portion; The left end of lever 5 is provided with the second hook portion, and the second hook portion and the mutual clasp joint of the first hook portion; The right-hand member of lever 5 is articulated with on bearing 4; The top, upper surface of push rod 6 is pressed on the side, middle part of lever 5; The side, middle part of push rod 6 is provided with the first radial protrusion portion, the second radial protrusion portion, the 3rd radial protrusion portion from top to bottom successively; The right-hand member upper surface of bimetal leaf 7 and the lower surface of push rod 6 are pressed close to; Electric heating element 8 is pressed close to the lower surface of bimetal leaf 7; The coil two ends of reverse charge release 9 are connected with the second-phase fixed contact two ends of three-phase air switch 1 respectively; The armature movable end of reverse charge release 9 and the lower surface in the first radial protrusion portion are pressed close to; Coil one end of overcurrent release 10 is connected with the third phase fixed contact lower end of three-phase air switch 1 by electric heating element 8; The armature movable end of overcurrent release 8 and the lower surface in the second radial protrusion portion are pressed close to; The coil two ends of device for under-voltage releasing equipment 11 are connected with the first-phase fixed contact lower end of three-phase air switch 1 and second-phase fixed contact lower end respectively; The armature movable end of device for under-voltage releasing equipment 11 and the lower surface in the 3rd radial protrusion portion are pressed close to; The lower end of the second spring 12 and the armature of device for under-voltage releasing equipment 11 are fixed.
Claims (1)
1. prevent a voltage transformer secondary side anti-charge device, it is characterized in that: comprise three-phase air switch (1), the first spring (2), locking bar (3), bearing (4), lever (5), push rod (6), bimetal leaf (7), electric heating element (8), reverse charge release (9), overcurrent release (10), device for under-voltage releasing equipment (11), the second spring (12); Wherein, the right-hand member of the first spring (2) and the first-phase moving contact of three-phase air switch (1) are fixed; The left part side of locking bar (3) is fixed with the first-phase moving contact of three-phase air switch (1), second-phase moving contact, third phase moving contact respectively; The right-hand member of locking bar (3) is provided with the first hook portion; The left end of lever (5) is provided with the second hook portion, and the second hook portion and the mutual clasp joint of the first hook portion; The right-hand member of lever (5) is articulated with on bearing (4); The top, upper surface of push rod (6) is pressed on the side, middle part of lever (5); The side, middle part of push rod (6) is provided with the first radial protrusion portion, the second radial protrusion portion, the 3rd radial protrusion portion from top to bottom successively; The right-hand member upper surface of bimetal leaf (7) and the lower surface of push rod (6) are pressed close to; Electric heating element (8) is pressed close to the lower surface of bimetal leaf (7); The coil two ends of reverse charge release (9) are connected with the second-phase fixed contact two ends of three-phase air switch (1) respectively; The armature movable end of reverse charge release (9) and the lower surface in the first radial protrusion portion are pressed close to; Coil one end of overcurrent release (10) is connected with the third phase fixed contact lower end of three-phase air switch (1) by electric heating element (8); The armature movable end of overcurrent release (8) and the lower surface in the second radial protrusion portion are pressed close to; The coil two ends of device for under-voltage releasing equipment (11) are connected with the first-phase fixed contact lower end of three-phase air switch (1) and second-phase fixed contact lower end respectively; The armature movable end of device for under-voltage releasing equipment (11) and the lower surface in the 3rd radial protrusion portion are pressed close to; The lower end of the second spring (12) and the armature of device for under-voltage releasing equipment (11) are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354524.6U CN204045532U (en) | 2014-06-30 | 2014-06-30 | Prevent voltage transformer secondary side anti-charge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354524.6U CN204045532U (en) | 2014-06-30 | 2014-06-30 | Prevent voltage transformer secondary side anti-charge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204045532U true CN204045532U (en) | 2014-12-24 |
Family
ID=52246170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420354524.6U Expired - Fee Related CN204045532U (en) | 2014-06-30 | 2014-06-30 | Prevent voltage transformer secondary side anti-charge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204045532U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112629A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Device for preventing reverse charging of secondary side of voltage transformer |
| CN108597967A (en) * | 2018-01-17 | 2018-09-28 | 安徽中骄智能科技有限公司 | A kind of thermal tripping broken circuit protecting equipment pushing away formula based on sheet metal |
-
2014
- 2014-06-30 CN CN201420354524.6U patent/CN204045532U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112629A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Device for preventing reverse charging of secondary side of voltage transformer |
| CN108597967A (en) * | 2018-01-17 | 2018-09-28 | 安徽中骄智能科技有限公司 | A kind of thermal tripping broken circuit protecting equipment pushing away formula based on sheet metal |
| CN108597967B (en) * | 2018-01-17 | 2019-09-13 | 安徽中骄智能科技有限公司 | A kind of thermal tripping broken circuit protecting equipment pushing away formula based on sheet metal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101651067A (en) | Secondary disconnect for circuit breaker drawout system | |
| US10580597B2 (en) | High current, compact fusible disconnect switch with dual slider bar actuator assembly | |
| CN104112629A (en) | Device for preventing reverse charging of secondary side of voltage transformer | |
| CN204045532U (en) | Prevent voltage transformer secondary side anti-charge device | |
| CN103560512A (en) | High-reliability closed loop wiring method of medium voltage distribution network | |
| CN107924778B (en) | Switching device | |
| CN103280372A (en) | Fast eddy current drive mechanism | |
| CN202034326U (en) | Anti-misoperation breaker for distribution automatic system below 0.4kV | |
| CN101888045A (en) | Circuit and method for preventing direct current arc discharge | |
| CN104183434A (en) | Electric-leakage circuit breaker with reverse-wiring structure | |
| CN101926064B (en) | Electrical power supply device, and connector | |
| CN103515150A (en) | Hybrid relay | |
| CN203192723U (en) | Under-voltage trip gear for breaker | |
| CN102610456B (en) | Thermomagnetic circuit breaker and controller switching equipment | |
| CN107689313A (en) | A kind of low-voltage circuit breaker | |
| CN102412102B (en) | Permanent magnet over-current opening device of outdoor high-voltage circuit breaker | |
| CN205159228U (en) | Breaker | |
| CN103683192A (en) | Large-capacity phase shift rectification transformer excitation inrush current suppression apparatus and method | |
| CN107154609A (en) | A kind of high reliability high-speed switch type fault current limiter | |
| CN203799951U (en) | Single-phase magnetic operating mechanism vacuum circuit breaker and intelligent vacuum circuit breaker system | |
| CN102761096A (en) | Undervoltage-overvoltage protection device and method | |
| CN103295846A (en) | Current contactor with switching mechanism | |
| CN204231027U (en) | Based on capacitor type permanent magnet mechanism sub-switch circuit | |
| CN104362754A (en) | Opening and closing circuit based on capacitive type permanent magnetic mechanism | |
| CN105788951A (en) | Protection apparatus and protection method for solid-closure indoor high-voltage vacuum circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |