CN205355931U - Distribution equipment with over -current protection function - Google Patents
Distribution equipment with over -current protection function Download PDFInfo
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- CN205355931U CN205355931U CN201521074382.9U CN201521074382U CN205355931U CN 205355931 U CN205355931 U CN 205355931U CN 201521074382 U CN201521074382 U CN 201521074382U CN 205355931 U CN205355931 U CN 205355931U
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- power supply
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Abstract
The utility model relates to a distribution equipment with over -current protection function, including main power, stand -by power supply, the load, the dual power transfer switch controller, the circuit breaker, first contactor and second contactor, this distribution equipment with over -current protection function carries out real time monitoring through the dual power transfer switch controller to the state of leading power and stand -by power supply, thereby under main power loses the condition of electricity, the automatic switch -over is to stand -by power supply, thereby the power supply that lasts to the load has been guaranteed, no. Two relay control circuit of dual power transfer switch controller have realized the interlocking of first contactor and second contactor simultaneously, the reliability of double power source switch circuit has been improved, moreover, current relay increases a pair of normally open contact in the over -current protection circuit, establishes ties with the trip coil, prevents circuit breaker unwanted tripping's accident to the reliability of over -current protection circuit has been improved.
Description
Technical field
This utility model relates to a kind of controller switching equipment with excess current protective function.
Background technology
Quickening along with modernization construction, the reliability of urban electricity supply is particularly important, and particularly in some important load power supply process, controller switching equipment is when main electricity power-fail, if power supply cannot be continued timely, then will cause huge economic loss because of long dead electricity.
Moreover, in present controller switching equipment, great majority have employed inverse time over-current protection, and according to actual then relationship change inversely proportional with short circuit current movement time, short circuit current is more big, and movement time is more short.But often circuit causes the accident of chopper mistrip owing to the accidentalia of extraneous vibration makes electric current relay disconnect, thus reducing the reliability of inverse time over-current protection circuit.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome prior art to lack the switch between alternating current and standby battery ability and inverse time over-current protection deficiency not in place, it is provided that a kind of have a switch between alternating current and standby battery ability and inverse time over-current protection has the controller switching equipment of excess current protective function reliably.
This utility model solves its technical problem and be the technical scheme is that a kind of controller switching equipment with excess current protective function, including dual power supply change-over circuit, described main electricity power supply, stand-by power supply, load, dual-power transfer switch controller, chopper, first catalyst and the second catalyst, described first catalyst includes the first contactor coil, first catalyst normally-closed contact and the first catalyst normally opened contact, described second catalyst includes the second contactor coil, second catalyst normally-closed contact and the second catalyst normally opened contact, described main electricity power supply is connected with circuit breaker electric by the first catalyst normally opened contact, described stand-by power supply is connected with circuit breaker electric by the second catalyst normally opened contact, described chopper electrically connects with load；
Described dual-power transfer switch controller is provided with two-way relay control circuit, the series circuit of one of them relay control circuit and the first contactor coil and the second catalyst normally-closed contact composition connects, and the series circuit of another relay control circuit and the second contactor coil and the first catalyst normally-closed contact composition connects；
Described circuit breaker electric is connected to circuit overcurrent protection, described circuit overcurrent protection includes the first current transformer, second current transformer, first electric current relay, second electric current relay, it is arranged on the first breaking coil in chopper and the second breaking coil, described first electric current relay includes the first current relay coil, first electric current relay normally-closed contact and the first electric current relay normally opened contact, described second electric current relay includes the second current relay coil, second electric current relay normally-closed contact and the second electric current relay normally opened contact, one end ground connection of described first Current Transformer Secondary side, the other end passes through the first electric current relay normally opened contact, the series circuit ground connection of the first breaking coil and the first current relay coil composition, one end ground connection of described second Current Transformer Secondary side, the other end passes through the second electric current relay normally opened contact, the series circuit ground connection of the second breaking coil and the second current relay coil composition, the series circuit of described first electric current relay normally-closed contact and the first electric current relay normally opened contact and the first breaking coil composition is in parallel, the series circuit of described second electric current relay normally-closed contact and the second electric current relay normally opened contact and the second breaking coil composition is in parallel.
As preferably, in order to ensure that dual-power transfer switch controller can work in main electricity power loss situation, thus improve the reliability of dual power supply change-over circuit, described dual-power transfer switch controller is provided with two-way working power, wherein a road working power electrically connects with main electricity power supply, and another road working power electrically connects with stand-by power supply.
As preferably, in order to ensure stability and the reliability that dual-power transfer switch controller works, improving dual-power transfer switch controller working range, the input voltage range of the working power of described dual-power transfer switch controller is AC80-270V.
As preferably, by the state of main electricity power supply and stand-by power supply is carried out monitor in real time, thus ensure that the reliability that dual power supply change-over circuit power supply switches, described dual-power transfer switch controller is provided with two-way voltage signal sampling, wherein a road voltage signal sampling electrically connects with main electricity power supply, and another road voltage signal sampling electrically connects with stand-by power supply.
As preferably, by utilizing inverse time current relay current to rise more fast motion time more short feature, it is ensured that the dual power supply change-over circuit reliability to overcurrent protection, described first electric current relay and the second electric current relay are inverse time current relay.
As preferably, it is connected with the communicating terminal of staff by communication interface, being capable of staff's monitor in real time to the duty of dual power supply change-over circuit, thus improve the reliability of dual power supply change-over circuit, described dual-power transfer switch controller being provided with communication interface.
As preferably, in order to ensure that the accurate of loaded work piece electric current in dual power supply change-over circuit is measured and chopper is carried out quick acting, the primary side of described first current transformer and the primary side of the second current transformer are respectively positioned between chopper and load, and the primary side of described first current transformer and the primary side of the second current transformer are connected with circuit breaker electric respectively.
The beneficial effects of the utility model are; the state of main electricity power supply and stand-by power supply is carried out monitor in real time by dual-power transfer switch controller by this controller switching equipment with excess current protective function; thus when main electricity power loss; automatically switch to stand-by power supply; thus ensure that the continued power to load; the two-way relay control circuit of dual-power transfer switch controller achieves the first catalyst and the interlocking of the second catalyst simultaneously, improves the reliability of dual power supply change-over circuit；Moreover, in circuit overcurrent protection, electric current relay increases by a pair normally opened contact, connects with breaking coil, it is prevented that the accident of chopper mistrip, thus improve the reliability of circuit overcurrent protection.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is the structural representation of the controller switching equipment with excess current protective function of the present utility model；
Fig. 2 is the structural representation of the circuit overcurrent protection of the controller switching equipment with excess current protective function of the present utility model；
In figure: P1. main electricity power supply, P2. stand-by power supply, M. load, U1. dual-power transfer switch controller, QF. chopper, KM1. the first contactor coil, KM1-1. the first catalyst normally-closed contact, KM1-2. the first catalyst normally opened contact, KM2. the second contactor coil, KM2-1. the second catalyst normally-closed contact, KM2-2. the second catalyst normally opened contact, CT1. the first current transformer, CT2. the second current transformer, YR1. the first breaking coil, YR2. the second breaking coil, KA1. the first current relay coil, KA1-1. the first electric current relay normally-closed contact, KA1-2. the first electric current relay normally opened contact, KA2. the second current relay coil, KA2-1. the second electric current relay normally-closed contact, KA2-2. the second electric current relay normally opened contact, LAN. communication interface.
Detailed description of the invention
Presently in connection with accompanying drawing, this utility model is described in further detail.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the composition relevant with this utility model.
As depicted in figs. 1 and 2, a kind of controller switching equipment with excess current protective function, including dual power supply change-over circuit, described dual power supply change-over circuit main electricity power supply P1, stand-by power supply P2, load M, dual-power transfer switch controller U1, circuit breaker Q F, first catalyst and the second catalyst, described first catalyst includes the first contactor coil KM1, first catalyst normally-closed contact KM1-1 and the first catalyst normally opened contact KM1-2, described second catalyst includes the second contactor coil KM2, second catalyst normally-closed contact KM2-1 and the second catalyst normally opened contact KM2-2, described main electricity power supply P1 is electrically connected with circuit breaker Q F by the first catalyst normally opened contact KM1-2, described stand-by power supply P2 is electrically connected with circuit breaker Q F by the second catalyst normally opened contact KM2-2, described circuit breaker Q F electrically connects with load M；
Described dual-power transfer switch controller U1 is provided with two-way relay control circuit, the series circuit of one of them relay control circuit and the first contactor coil KM1 and the second catalyst normally-closed contact KM2-1 composition connects, and the series circuit of another relay control circuit and the second contactor coil KM2 and the first catalyst normally-closed contact KM1-1 composition connects；
Described circuit breaker Q F is electrically connected with circuit overcurrent protection, described circuit overcurrent protection includes the first Current Transmit 1, second Current Transmit 2, first electric current relay, second electric current relay, it is arranged on the first breaking coil YR1 in circuit breaker Q F and the second breaking coil YR2, described first electric current relay includes the first current relay coil KA1, first electric current relay normally-closed contact KA1-1 and the first electric current relay normally opened contact KA1-2, described second electric current relay includes the second current relay coil KA2, second electric current relay normally-closed contact KA2-1 and the second electric current relay normally opened contact KA2-2, one end ground connection of described first Current Transmit 1 secondary side, the other end passes through the first electric current relay normally opened contact KA1-2, the series circuit ground connection of the first breaking coil YR1 and the first current relay coil KA1 composition, one end ground connection of described second Current Transmit 2 secondary side, the other end passes through the second electric current relay normally opened contact KA2-2, the series circuit ground connection of the second breaking coil YR2 and the second current relay coil KA2 composition, the series circuit of described first electric current relay normally-closed contact KA1-1 and the first electric current relay normally opened contact KA1-2 and the first breaking coil YR1 composition is in parallel, the series circuit of described second electric current relay normally-closed contact KA2-1 and the second electric current relay normally opened contact KA2-2 and the second breaking coil YR2 composition is in parallel.
As preferably, in order to ensure that dual-power transfer switch controller U1 can work in main electricity power supply P1 dead electricity situation, thus improve the reliability of dual power supply change-over circuit, described dual-power transfer switch controller U1 is provided with two-way working power, wherein a road working power electrically connects with main electricity power supply P1, and another road working power electrically connects with stand-by power supply P2.
As preferably, in order to ensure the dual-power transfer switch controller U1 stability worked and reliability, improving dual-power transfer switch controller U1 working range, the input voltage range of the working power of described dual-power transfer switch controller U1 is AC80-270V.
As preferably, by the state of main electricity power supply P1 and stand-by power supply P2 is carried out monitor in real time, thus ensure that the reliability that dual power supply change-over circuit power supply switches, described dual-power transfer switch controller U1 is provided with two-way voltage signal sampling, wherein a road voltage signal sampling electrically connects with main electricity power supply P1, and another road voltage signal sampling electrically connects with stand-by power supply P2.
As preferably, by utilizing inverse time current relay current to rise more fast motion time more short feature, it is ensured that the dual power supply change-over circuit reliability to overcurrent protection, described first electric current relay and the second electric current relay are inverse time current relay.
As preferably, it is connected with the communicating terminal of staff by communication interface LAN, being capable of staff's monitor in real time to the duty of dual power supply change-over circuit, thus improve the reliability of dual power supply change-over circuit, described dual-power transfer switch controller U1 being provided with communication interface LAN.
As preferably, in order to ensure that the accurate of load M operating current in dual power supply change-over circuit is measured and circuit breaker Q F is carried out quick acting, the primary side of described first Current Transmit 1 and the primary side of the second Current Transmit 2 are respectively positioned between circuit breaker Q F and load M, and the primary side of described first Current Transmit 1 and the primary side of the second Current Transmit 2 electrically connect with circuit breaker Q F respectively.
This has in the controller switching equipment of excess current protective function; the state of main electricity power supply P1 and stand-by power supply P2 is carried out monitor in real time by voltage signal sampling by dual-power transfer switch controller U1; thus when main electricity power supply P1 dead electricity; judge rapidly; automatically switch to stand-by power supply P2, thus ensure that the continued power to load M.The two-way relay control circuit of dual-power transfer switch controller U1 achieves the first catalyst and the interlocking of the second catalyst simultaneously, thus realize preventing main electricity power supply P1 and stand-by power supply P2 from powering simultaneously, the phenomenon having an accident, improves the reliability of dual power supply change-over circuit.
This has in the circuit overcurrent protection of controller switching equipment of excess current protective function; when load supplying circuit generation phase fault or ground short circuit; electric current relay action on this road; after certain time-delay (anti-time limit characteristic); the normally opened contact Guan Bi of corresponding current relay; its normally-closed contact disconnects simultaneously, and at this moment circuit breaker Q F trips because of its breaking coil " being gone shunting ", excises short trouble.Electric current relay adds a pair normally opened contact, connects with breaking coil, its objective is the normally-closed contact preventing electric current relay when primary circuit is properly functioning due to the accidentalia of extraneous vibration so as to disconnect and cause the accident of chopper mistrip.After increasing by a pair normally opened contact, even if then normally-closed contact accidentally disconnects, without causing chopper mistrip.
Compared with prior art; the state of main electricity power supply P1 and stand-by power supply P2 is carried out monitor in real time by dual-power transfer switch controller U1 by this controller switching equipment with excess current protective function; thus when main electricity power supply P1 dead electricity; automatically switch to stand-by power supply P2; thus ensure that the continued power to load M; the two-way relay control circuit of dual-power transfer switch controller U1 achieves the first catalyst and the interlocking of the second catalyst simultaneously, improves the reliability of dual power supply change-over circuit；Moreover, in circuit overcurrent protection, electric current relay increases by a pair normally opened contact, connects with breaking coil, it is prevented that the accident of chopper mistrip, thus improve the reliability of circuit overcurrent protection.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not necessarily departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content in description, it is necessary to determine its technical scope according to right.
Claims (7)
1. a controller switching equipment with excess current protective function, including dual power supply change-over circuit, it is characterized in that, described dual power supply change-over circuit includes main electricity power supply (P1), stand-by power supply (P2), load (M), dual-power transfer switch controller (U1), chopper (QF), first catalyst and the second catalyst, described first catalyst includes the first contactor coil (KM1), first catalyst normally-closed contact (KM1-1) and the first catalyst normally opened contact (KM1-2), described second catalyst includes the second contactor coil (KM2), second catalyst normally-closed contact (KM2-1) and the second catalyst normally opened contact (KM2-2), described main electricity power supply (P1) is electrically connected with chopper (QF) by the first catalyst normally opened contact (KM1-2), described stand-by power supply (P2) is electrically connected with chopper (QF) by the second catalyst normally opened contact (KM2-2), described chopper (QF) electrically connects with load (M)；
Described dual-power transfer switch controller (U1) is provided with two-way relay control circuit, the series circuit that one of them relay control circuit and the first contactor coil (KM1) and the second catalyst normally-closed contact (KM2-1) form connects, and the series circuit that another relay control circuit and the second contactor coil (KM2) and the first catalyst normally-closed contact (KM1-1) form connects；
Described chopper (QF) is electrically connected with circuit overcurrent protection, described circuit overcurrent protection includes the first current transformer (CT1), second current transformer (CT2), first electric current relay, second electric current relay, it is arranged on the first breaking coil (YR1) in chopper (QF) and the second breaking coil (YR2), described first electric current relay includes the first current relay coil (KA1), first electric current relay normally-closed contact (KA1-1) and the first electric current relay normally opened contact (KA1-2), described second electric current relay includes the second current relay coil (KA2), second electric current relay normally-closed contact (KA2-1) and the second electric current relay normally opened contact (KA2-2), one end ground connection of described first current transformer (CT1) secondary side, the other end passes through the first electric current relay normally opened contact (KA1-2), the series circuit ground connection that first breaking coil (YR1) and the first current relay coil (KA1) form, one end ground connection of described second current transformer (CT2) secondary side, the other end passes through the second electric current relay normally opened contact (KA2-2), the series circuit ground connection that second breaking coil (YR2) and the second current relay coil (KA2) form, described first electric current relay normally-closed contact (KA1-1) is in parallel with the series circuit that the first electric current relay normally opened contact (KA1-2) and the first breaking coil (YR1) form, described second electric current relay normally-closed contact (KA2-1) is in parallel with the series circuit that the second electric current relay normally opened contact (KA2-2) and the second breaking coil (YR2) form.
2. there is the controller switching equipment of excess current protective function as claimed in claim 1; it is characterized in that; described dual-power transfer switch controller (U1) is provided with two-way working power; wherein a road working power electrically connects with main electricity power supply (P1), and another road working power electrically connects with stand-by power supply (P2).
3. there is the controller switching equipment of excess current protective function as claimed in claim 2, it is characterised in that the input voltage range of the working power of described dual-power transfer switch controller (U1) is AC80-270V.
4. there is the controller switching equipment of excess current protective function as claimed in claim 1; it is characterized in that; described dual-power transfer switch controller (U1) is provided with two-way voltage signal sampling; wherein a road voltage signal sampling electrically connects with main electricity power supply (P1), and another road voltage signal sampling electrically connects with stand-by power supply (P2).
5. there is the controller switching equipment of excess current protective function as claimed in claim 1, it is characterised in that described first electric current relay and the second electric current relay are inverse time current relay.
6. there is the controller switching equipment of excess current protective function as claimed in claim 1, it is characterised in that described dual-power transfer switch controller (U1) is provided with communication interface (LAN).
7. there is the controller switching equipment of excess current protective function as claimed in claim 1; it is characterized in that; the primary side of described first current transformer (CT1) and the primary side of the second current transformer (CT2) are respectively positioned between chopper (QF) and load (M), and the primary side of described first current transformer (CT1) and the primary side of the second current transformer (CT2) electrically connect with chopper (QF) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074382.9U CN205355931U (en) | 2015-12-21 | 2015-12-21 | Distribution equipment with over -current protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074382.9U CN205355931U (en) | 2015-12-21 | 2015-12-21 | Distribution equipment with over -current protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355931U true CN205355931U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521074382.9U Expired - Fee Related CN205355931U (en) | 2015-12-21 | 2015-12-21 | Distribution equipment with over -current protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205355931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229944A (en) * | 2016-08-02 | 2016-12-14 | 浙江华采科技有限公司 | A kind of earthed voltage transformer exciting current protection device |
| CN111708426A (en) * | 2020-06-12 | 2020-09-25 | 浪潮电子信息产业股份有限公司 | Server and power supply protection circuit thereof |
-
2015
- 2015-12-21 CN CN201521074382.9U patent/CN205355931U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229944A (en) * | 2016-08-02 | 2016-12-14 | 浙江华采科技有限公司 | A kind of earthed voltage transformer exciting current protection device |
| CN106229944B (en) * | 2016-08-02 | 2018-11-27 | 浙江华采科技有限公司 | A kind of earthed voltage transformer exciting current protective device |
| CN111708426A (en) * | 2020-06-12 | 2020-09-25 | 浪潮电子信息产业股份有限公司 | Server and power supply protection circuit thereof |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20160629 Termination date: 20181221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |