CN202564909U - Under-voltage time-delay device of breaker - Google Patents
Under-voltage time-delay device of breaker Download PDFInfo
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- CN202564909U CN202564909U CN2012201938330U CN201220193833U CN202564909U CN 202564909 U CN202564909 U CN 202564909U CN 2012201938330 U CN2012201938330 U CN 2012201938330U CN 201220193833 U CN201220193833 U CN 201220193833U CN 202564909 U CN202564909 U CN 202564909U
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Abstract
The utility model discloses an under-voltage time-delay device of a breaker. The voltage of a high-voltage power supply is reduced by a voltage-reducing capacitor, and the high-voltage power supply is then rectified by a rectifier bridge; one path of the rectified high-voltage power supply is filtered by a filtering capacitor, and the voltage of the rectified high-voltage power supply is stabled by a voltage stabilizing tube, and the path is connected to a time-delay relay; the other path of the high-voltage power supply is connected with a normally open contact of the relay, the normally open contact of the time-delay relay is connected with a capacitor in series, a normally closed contact of the time-delay relay is connected with a final control relay in series and is then connected with the capacitor in parallel, and the final control relay is connected with the breaker. The under-voltage time-delay device of the utility model avoids machine halts and production stops caused by a sudden blackout, in particular, the device has the advantages that (1) original working modes of circuits are not changed; (2) delayed time can be changed by selecting different capacitances of the C1; (3) the device works for three seconds after a power grid is under-voltage (no voltage) and the device does not work when electromagnets work normally; (4) the power consumption of the device is as small as 0.36W; and (5) the cost of the device is low, and on-site installation of the device is very convenient.
Description
Technical field
The utility model relates to a kind of apparatus for protecting power supply, specifically when the electrical network transient voltage, guarantees the protective device of electric equipment continuous operation.
Background technology
As everybody knows; When electrical network transient voltage or decompression, circuit breaker under-voltage protection instantaneous operation, and circuit breaker often is the master switch of power supply; Institute's on-load is got rid of; This can cause bigger loss for quantity-produced enterprise, particularly adopts the factory of electric equipment for large tracts of land such as oil fields, and to dodge the economic loss of stopping causing countless because of electrical network.
Summary of the invention
The purpose of the utility model provides a kind of the sudden strain of a muscle at electrical network and stops under the situation the under-voltage time-delay mechanism of the circuit breaker of electric equipment safe operation.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
The under-voltage time-delay mechanism of a kind of circuit breaker, high voltage source at first pass through decompression capacitor step-down and rectifier bridge rectification, through after the filtering and voltage-stabiliser tube voltage stabilizing of filter capacitor, connect time-delay relay through the high voltage source behind the over commutation one tunnel; Another road of high voltage source connects the time-delay relay normally opened contact, and described time-delay relay normally opened contact is connected with capacitances in series, and the time-delay relay normally-closed contact is parallelly connected with electric capacity after being connected in series with the execution relay, carries out relay and is connected with circuit breaker.
Be connected with nylon rope between the moving iron core of said execution relay electromagnet and the moving iron core of device for under-voltage releasing equipment of breaker.
Adopt the utility model of technique scheme, avoided stopping causing big face to shut down the stopping production phenomenon, comprise following advantage specifically because of electrical network dodges:
(1) do not change the primary circuit working method;
(2) select the C1 amount of capacity, can change time-delay length;
(3) electromagnet is not just often worked, and when having only electrical network under-voltage (decompression), action resets rapidly then after 3 seconds;
(4) power consumption is little, 0.36 watt to the greatest extent of whole device power consumption;
(5) cost is low, and on-the-spot installation is very convenient.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Embodiment
As shown in Figure 1; The 380V high voltage source is at first passed through decompression capacitor Co step-down and rectifier bridge D rectification; High voltage source through behind the over commutation is divided into two-way: after the filtering and voltage-stabiliser tube D2 voltage stabilizing of one tunnel process filter capacitor C1; Connect time-delay relay Z, wherein filter capacitor C1, voltage-stabiliser tube D2 and time-delay relay Z are and are connected in parallel; Another road connects time-delay relay normally opened contact Z1; Described time-delay relay normally opened contact Z1 and capacitor C 2 are connected in series; Time-delay relay normally-closed contact Z2 is parallelly connected with capacitor C 2 after being connected in series with execution relay Q, and above-mentioned execution relay Q is connected with circuit breaker.In the utility model, carry out relay Q and adopt pull-typely, that is: be connected with nylon rope between the moving iron core of carrying out relay Q electromagnet and the moving iron core of device for under-voltage releasing equipment of breaker.
When mounted; At first remove the device for under-voltage releasing equipment of breaker spring; Cut-off breaker device for under-voltage releasing equipment power supply then; The electromagnet of carrying out relay Q is fixed on the device for under-voltage releasing equipment of breaker below, and the moving iron core that will carry out relay Q electromagnet at last moves with device for under-voltage releasing equipment of breaker that iron core is vertical to be connected with nylon rope.
The operation principle of the utility model is: under the normal condition, 380 volts of power supplys are given time-delay relay Z power supply behind decompression capacitor Co step-down, rectifier bridge D rectification, filter capacitor C1 and voltage-stabiliser tube D2, simultaneously filter capacitor C1 is charged.2 chargings of time-delay relay normally opened contact Z1 closed pair capacitor C.
When electrical network under-voltage (during decompression), because the discharge process of filter capacitor C1, time-delay relay Z kept 3 seconds; Time-delay relay Z dead electricity after 3 seconds; Its time-delay relay normally-closed contact Z2 is closed, and the relay electromagnet action is carried out in 2 pairs of execution relays of capacitor C Q discharge; Because it is pull-type that this electromagnet is taked, circuit breaker is broken off through the moving iron core of the moving iron core pulling of electromagnet device for under-voltage releasing equipment of breaker.Wherein filter capacitor C1 and time-delay relay Z form delay circuit, filter capacitor C1 amount of capacity decision delay time length; Capacitor C 2 is formed executive circuit with execution relay Q.
Claims (2)
1. under-voltage time-delay mechanism of circuit breaker; High voltage source is at first passed through decompression capacitor (Co) step-down and rectifier bridge (D) rectification; It is characterized in that: after the filtering and voltage-stabiliser tube (D2) voltage stabilizing of the high voltage source behind the over commutation one tunnel, connect time-delay relay (Z) through filter capacitor (C1); Another road of high voltage source connects time-delay relay normally opened contact (Z1); Described time-delay relay normally opened contact (Z1) is connected in series with electric capacity (C2); Parallelly connected with electric capacity (C2) after time-delay relay normally-closed contact (Z2) and execution relay (Q) are connected in series, described execution relay (Q) is connected with circuit breaker.
2. the under-voltage time-delay mechanism of circuit breaker according to claim 1 is characterized in that: be connected with nylon rope between the moving iron core of said execution relay (Q) electromagnet and the moving iron core of device for under-voltage releasing equipment of breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201938330U CN202564909U (en) | 2012-05-03 | 2012-05-03 | Under-voltage time-delay device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201938330U CN202564909U (en) | 2012-05-03 | 2012-05-03 | Under-voltage time-delay device of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564909U true CN202564909U (en) | 2012-11-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201938330U Expired - Fee Related CN202564909U (en) | 2012-05-03 | 2012-05-03 | Under-voltage time-delay device of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564909U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485637A (en) * | 2014-12-31 | 2015-04-01 | 深圳市盛德兰电气有限公司 | Voltage-loss delayer |
| CN105023817A (en) * | 2014-04-24 | 2015-11-04 | 中国石油化工股份有限公司 | Universal circuit breaker delay tripping device |
| CN106451346A (en) * | 2016-09-29 | 2017-02-22 | 益盐堂（应城）健康盐制盐有限公司 | Undervoltage automatic protection circuit breaker with time-lag action function |
| CN107843807A (en) * | 2016-09-20 | 2018-03-27 | 丰郅(上海)新能源科技有限公司 | A kind of moment in Voltage Drop can turn off the monitoring system of power network in time |
-
2012
- 2012-05-03 CN CN2012201938330U patent/CN202564909U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023817A (en) * | 2014-04-24 | 2015-11-04 | 中国石油化工股份有限公司 | Universal circuit breaker delay tripping device |
| CN104485637A (en) * | 2014-12-31 | 2015-04-01 | 深圳市盛德兰电气有限公司 | Voltage-loss delayer |
| CN104485637B (en) * | 2014-12-31 | 2018-03-16 | 深圳市盛德兰电气有限公司 | A kind of decompression delayer |
| CN107843807A (en) * | 2016-09-20 | 2018-03-27 | 丰郅(上海)新能源科技有限公司 | A kind of moment in Voltage Drop can turn off the monitoring system of power network in time |
| CN107843807B (en) * | 2016-09-20 | 2021-07-30 | 丰郅(上海)新能源科技有限公司 | Monitoring system capable of timely turning off power grid at voltage drop moment |
| CN106451346A (en) * | 2016-09-29 | 2017-02-22 | 益盐堂（应城）健康盐制盐有限公司 | Undervoltage automatic protection circuit breaker with time-lag action function |
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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: 20121128 Termination date: 20130503 |