CN201616407U - Electronic leakage switch with incoming and outgoing lines capable of being connected reversely - Google Patents
Electronic leakage switch with incoming and outgoing lines capable of being connected reversely Download PDFInfo
- Publication number
- CN201616407U CN201616407U CN2009202957799U CN200920295779U CN201616407U CN 201616407 U CN201616407 U CN 201616407U CN 2009202957799 U CN2009202957799 U CN 2009202957799U CN 200920295779 U CN200920295779 U CN 200920295779U CN 201616407 U CN201616407 U CN 201616407U
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- power supply
- release
- control circuit
- contact
- accessory power
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Abstract
The utility model discloses an electronic leakage switch with incoming and outgoing lines capable of being connected reversely, which comprises a movable contact 1, a fixed contact 2, a release 3, a control circuit 4, a zero sequence current transformer 5, a test button 6, and an auxiliary power supply connecting mechanism 7, wherein the auxiliary power supply connecting mechanism 7 comprises a lower contact piece 71 and an auxiliary power supply connecting wire 72, the lower contact piece 71 is mounted below the movable contact 2, and one end of the auxiliary power supply connecting wire 72 is electrically connected with the lower contact piece 71, while the other end thereof is electrically connected with the release 3. The utility model has the characteristic that the release 3 and the power supply of the control circuit 4 are connected under the closed state and are disconnected under the opened state. Moreover, the utility model can operate normally whether the incoming and outgoing lines are connected reversely or not, thereby being extensively applicable to the field of electric leakage protection for households.
Description
Technical field
The utility model belongs to the leakage switch field, is specifically related to the electronic type leakage switch, but relates in particular to a kind of electronic type leakage switch that passes in and out the line reverse graft.
Background technology
Along with rapid economy development, household electrical appliance are universal day by day, and the electronic type leakage switch shows especially day by day in the effect in family and other low-voltage electrical apparatus field.As shown in Figure 1, existing electronic type leakage switch mainly is made up of moving contact 1, fixed contact 2, release 3, control circuit 4, zero sequence current mutual inductor 5, test button 6 etc., and wherein the power supply of release 3 and control circuit 4 accessory power supply of being drawn by the switching load end provides.Its operation principle is: the turnover current value that is detected the major loop lead by zero sequence current mutual inductor 5, uneven and when reaching set point when above-mentioned current value, control circuit 4 sends signal, make the coil electricity of release 3, trigger the operating mechanism of release 3, make switch trip (being that moving contact 1 and fixed contact 2 disconnect electrical connection), cut off load power source.At this moment, the accessory power supply of being drawn by load end disconnects, and causes the power supply of release 3 and control circuit 4 also to disconnect simultaneously.
The defective that this technology exists is: when wiring error appearred in the user, such as the electric power incoming line of electronic type leakage switch and load outlet reverse graft the time, in fact, this situation was of common occurrence in reality.Because the accessory power supply of above-mentioned release 3 and control circuit 4 is to be fixedly connected on the major loop lead of load end, the electronic type leakage switch is in leakage tripping or press under the situation of test button 6 tripping operation, release 3 and control circuit 4 also can continue energising, cause electronic type leakage switch release 3 and control circuit 4 to burn.
Summary of the invention
At the defective of prior art, a kind of electronic type leakage switch that can address the above problem of the special proposition of the utility model, its electric power incoming line and load outlet be reverse graft arbitrarily, but promptly a kind of turnover line upside-down mounting electronic type leakage switch.
The technical solution of the utility model is: but a kind of electronic type leakage switch that passes in and out the line reverse graft, comprise moving contact 1, fixed contact 2, release 3, control circuit 4, zero sequence current mutual inductor 5, test button 6, also comprise accessory power supply bindiny mechanism 7, accessory power supply bindiny mechanism 7 comprises contact 71 and accessory power supply connecting line 72 down, following contact 71 is installed in moving contact 2 belows, accessory power supply connecting line 72 1 ends and following contact 71 are electrically connected, and the other end and release 3 are electrically connected.
Operation principle of the present utility model is: the turnover current value that is detected the major loop lead by zero sequence current mutual inductor 5, uneven and when reaching set point when above-mentioned current value, control circuit 4 sends signal, make the coil electricity of release 3, inhale moving its operating mechanism, make switch trip, promptly moving contact 1 and fixed contact 2 disconnect and being electrically connected, and cut off load power source.In switch trip, also cut off accessory power supply by accessory power supply bindiny mechanism, like this, no matter be just to connect or the reverse graft mode, the power supply of release 3 and control circuit 4 all is in off-state, the situation of having avoided release 3 and control circuit 4 to occur burning.And release 3 and control circuit 4 is by accessory power supply bindiny mechanism when switch closure, and energized makes electronic type leakage switch operate as normal.
By top analysis, explanation, the beneficial effects of the utility model are: no matter electric power incoming line and load outlet are just connecing or reverse graft, and the utility model all can operate as normal, the situation that release 3 and control circuit 4 also can not occur burning.
The utility model is widely used in the earth leakage protective field of domestic use.
Description of drawings
Fig. 1 is existing electronic type leakage switch operation principle schematic diagram.
Fig. 2 is the utility model operation principle schematic diagram.
Identifier declaration: 1--moving contact; The 2--fixed contact; The 3--release; The 4-control circuit; The 5--zero sequence current mutual inductor; The 6-test button; 7--accessory power supply bindiny mechanism; Contact under the 71--; 72--accessory power supply connecting line.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to Fig. 2 the utility model is on the basis of existing electronic type leakage switch structure accessory power supply mechanism 7 to be set newly.But a kind of electronic type leakage switch that passes in and out the line reverse graft, comprise moving contact 1, fixed contact 2, release 3, control circuit 4, zero sequence current mutual inductor 5, test button 6, accessory power supply bindiny mechanism 7, accessory power supply bindiny mechanism 7 comprises contact 71 and accessory power supply connecting line 72 down, following contact 71 is installed in moving contact 2 belows, accessory power supply connecting line 72 1 ends and following contact 71 are electrically connected, and the other end and release 3 are electrically connected.just connect or the situation of reverse graft under, zero sequence current mutual inductor 5 exports control circuit 4 to when detecting electric leakage signal, make release 3 energized draw back moving contact 1, moving contact 1 disconnected with following contact 71 and being electrically connected this moment, accessory power supply mechanism 7 power interruptions, therefore, control circuit 4 and release 3 can not burn; Simultaneously, when contact closure of the present utility model, movable contact spring 1 down moves and is pressing contact 71, and by the provide accessory power supply of auxiliary power supply line 72 for release 3 and control circuit 4.
Because above-mentioned setting, the characteristics that make and the utlity model has under closure state release 3 and control circuit 4 power connections, release 3 and control circuit 4 power supplys disconnect under tripped condition.Just connecing or the occasion of reverse graft at the turnover line, the utility model all can operate as normal.
Claims (1)
1. but electronic type leakage switch that passes in and out the line reverse graft, comprise moving contact (1), fixed contact (2), release (3), control circuit (4), zero sequence current mutual inductor (5), test button (6), it is characterized in that: also comprise accessory power supply bindiny mechanism (7), described accessory power supply bindiny mechanism (7) comprises contact (71) and accessory power supply connecting line (72) down, described contact (71) down is installed in described moving contact (2) below, described accessory power supply connecting line (72) one ends and described contact (71) down are electrically connected, and the other end and described release (3) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202957799U CN201616407U (en) | 2009-12-30 | 2009-12-30 | Electronic leakage switch with incoming and outgoing lines capable of being connected reversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202957799U CN201616407U (en) | 2009-12-30 | 2009-12-30 | Electronic leakage switch with incoming and outgoing lines capable of being connected reversely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616407U true CN201616407U (en) | 2010-10-27 |
Family
ID=43002771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202957799U Expired - Lifetime CN201616407U (en) | 2009-12-30 | 2009-12-30 | Electronic leakage switch with incoming and outgoing lines capable of being connected reversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393782A (en) * | 2017-08-14 | 2017-11-24 | 国家电网公司 | Primary cut-out |
-
2009
- 2009-12-30 CN CN2009202957799U patent/CN201616407U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393782A (en) * | 2017-08-14 | 2017-11-24 | 国家电网公司 | Primary cut-out |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |
|
| CX01 | Expiry of patent term |