CN204012226U - The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley - Google Patents
The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley Download PDFInfo
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- CN204012226U CN204012226U CN201420396226.3U CN201420396226U CN204012226U CN 204012226 U CN204012226 U CN 204012226U CN 201420396226 U CN201420396226 U CN 201420396226U CN 204012226 U CN204012226 U CN 204012226U
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- contactor
- control circuit
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- contact
- travel switch
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Abstract
The utility model discloses the control circuit of a kind of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley, comprise rival car electronic enter the electrical verification earthed circuit controlled of the electronic separating brake of electrical verification ground connection, earthed switch of cabinet, offer for sale the turnover cabinet control circuit controlled and rival car.The utility model is easy to operate, safety.Earth handcart is worked reliably, not only can bring fail safe to maintainer, also can effectively reduce the probability of power failure outside the plan, for user provides higher power supply reliability, give the economic interests indirectly brought of client, thereby improve social public credibility and degree of recognition for power system operation.
Description
Technical field
The utility model relates to the control circuit of a kind of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley.
Background technology
In recent years, metal enclosed air insulation switch cubicle has been obtained extensive use in transformer station and other industrial cousumer transformer station of electric power system 550kV, 220kV and following electric pressure, due to technological progress with ensureing that under user's condition easy to use, safe, the switchgear of handcart-type also just arises at the historic moment.Wherein, in order to overhaul convenient and safety, earth handcart one of the handcart equipment that is absolutely necessary.Its objective is ensure between turn(a)round, to prevent from misdelivering electricity or switchgear misoperation and bring electric shock accidents.Extensive general earth handcart as shown in Figure 1 at present.From this pictorial diagram, this product is by simple three contact arms and a ground strap, and jointly forms for the plum blossom fingertip of the use that is connected with grounding static contact in cabinet.
The shortcoming of existing product is to only have when in the certain uncharged situation of inlet wire bus, handcart push be only safe and reliable, do not have and there is measuring ability to whether bus is charged, if push handcart in charged situation, handcart does not have machinery or electronic interlock to restrict it and continue to push, once handcart pushes, will there is instant earthing short circuit accident.In charged situation, push earth handcart and will produce very large short-circuit electromotive force.In this case, very large electronic thrust may be scolded out handcart, and at this moment electrodynamic repulsion force may force earth handcart to be return and weigh or wound maintainer wounded.And, the moment of being scolded out by electric power at earth handcart, the breakdown and arcing of spatial joint clearance between the Mume flower contact on handcart and high pressure fixed contact.Very likely cause electric arc burn staff or starting arc fire incident.
Visible, in charged situation, pushing earth handcart, to cause loss of life or personal injury and property loss be inevitable security incident.
Summary of the invention
The purpose of this utility model is to provide a kind of can effectively ensure the middle-placed switch cabinet multifunctional electricity-detection of handcart handling safety, the control circuit of grounding trolley.
Technical solution of the present utility model is:
A control circuit for middle-placed switch cabinet multifunctional electricity-detection, grounding trolley, is characterized in that: comprise rival car electronic enter the electrical verification earthed circuit controlled of the electronic separating brake of electrical verification ground connection, earthed switch of cabinet, offer for sale the turnover cabinet control circuit controlled and rival car, described turnover cabinet control circuit comprises the motor M 2 that drives moving of car, control motor M 2 is set in the supply line of motor M 2 works, contactor KM3 in parallel, the main contact of contactor KM4, in supply line, be connected to switch S 1, switch S 1 is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB3 in this Parallel Control circuit and auxiliary contact of contactor KM3 and a contact of contactor KM4, contactor KM3, switch S 9 is composed in series, the parallel-connection structure of another route routing button SB4 in this Parallel Control circuit and auxiliary contact of contactor KM4 and a contact of contactor KM3, contactor KM4, switch S 8 is composed in series, described electrical verification earthed circuit comprises motor M 1, control motor M 2 is set in the supply line of motor M 1 works, contactor KM1 in parallel, the main contact of contactor KM2, in supply line, be connected to auxiliary contact HN, one end of auxiliary contact HN is connected to the shunting means of switch S 8 and switch S 9, the other end of auxiliary contact HN is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB1 in this Parallel Control circuit and auxiliary contact of contactor KM1 and a contact of contactor KM2, contactor KM1, switch S 1 is composed in series, the parallel-connection structure of another route routing button SB2 in this Parallel Control circuit and auxiliary contact of contactor KM2 and a contact of contactor KM1, contactor KM2, switch S 2 is composed in series.
The utility model is easy to operate, safety.Earth handcart is worked reliably, not only can bring fail safe to maintainer, also can effectively reduce the probability of power failure outside the plan, for user provides higher power supply reliability, give the economic interests indirectly brought of client, thereby improve social public credibility and degree of recognition for power system operation.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is turnover cabinet control circuit figure of the present utility model.
Fig. 2 is electrical verification earthed circuit figure of the present utility model.
Embodiment
A control circuit for middle-placed switch cabinet multifunctional electricity-detection, grounding trolley, comprise rival car electronic enter the electrical verification earthed circuit controlled of the electronic separating brake of electrical verification ground connection, earthed switch of cabinet, offer for sale the turnover cabinet control circuit controlled and rival car, described turnover cabinet control circuit comprises the motor M 2 that drives moving of car, control motor M 2 is set in the supply line of motor M 2 works, contactor KM3 in parallel, the main contact of contactor KM4, in supply line, be connected to travel switch S1, travel switch S1 is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB3 in this Parallel Control circuit and auxiliary contact of contactor KM3 and a contact of contactor KM4, contactor KM3, travel switch S9 is composed in series, the parallel-connection structure of another route routing button SB4 in this Parallel Control circuit and auxiliary contact of contactor KM4 and a contact of contactor KM3, contactor KM4, travel switch S8 is composed in series, described electrical verification earthed circuit comprises motor M 1, control motor M 2 is set in the supply line of motor M 1 works, contactor KM1 in parallel, the main contact of contactor KM2, in supply line, be connected to auxiliary contact HN, one end of auxiliary contact HN is connected to the shunting means of travel switch S8 and travel switch S9, the other end of auxiliary contact HN is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB1 in this Parallel Control circuit and auxiliary contact of contactor KM1 and a contact of contactor KM2, contactor KM1, travel switch S1 is composed in series, the parallel-connection structure of another route routing button SB2 in this Parallel Control circuit and auxiliary contact of contactor KM2 and a contact of contactor KM1, contactor KM2, travel switch S2 is composed in series,
Handcart electronic enter cabinet:
Earthed switch is in open position, and travel switch S1 connects, and handcart is in test position, travel switch S9 connects, and presses the button SB3 and enters cabinet button, and contactor KM3 coil obtains electric, main noddle on contactor is connected, motor M 2 electric, handcart start to shake in cabinet into, now release button SB3, contactor is by the self-sustaining of KM3 auxiliary contact, and when handcart arrives service position, travel switch S9 disconnects, contactor KM3 coil losing electricity, main contact disconnects, and motor M 2 quits work, and enters cabinet EO;
Handcart is electronic to offer for sale:
Earthed switch is in open position, travel switch S1 connects, handcart is in service position, travel switch S8 connects, press the button the SB4 button that offers for sale, contactor KM4 coil obtains electric, and main noddle on contactor is connected, motor power commutation when entering cabinet, motor M 2 obtains electric, and handcart starts to shake out outside cabinet, now unclamps SB4, contactor is by the self-sustaining of KM4 auxiliary contact, when handcart arrives test position, travel switch S8 disconnects, contactor KM4 coil losing electricity, and main contact disconnects, motor M 2 quits work, and EO offers for sale.
The operation of electrical verification ground connection:
Handcart travel switch S9 in the time of service position connects, handcart travel switch S8 in the time of test position connects, primary circuit feeds back to electrification display according to high pressure sensor, primary circuit is not charged, auxiliary contact HN closure, earthed switch is in gate-dividing state, travel switch S1 connects, press the button SB1 switch knob, contactor KM1 coil obtains electric, main noddle on contactor is connected, motor M 1 obtains electric, earthed switch starts to close a floodgate, now unclamp SB1, contactor is by the self-sustaining of KM1 auxiliary contact, when earthed switch combined floodgate puts in place, travel switch S1 disconnects, contactor KM1 coil losing electricity, main contact disconnects, motor M 1 quits work, electrical verification ground connection EO,
The electronic separating brake of earthed switch:
Handcart is connected in service position travel switch S9, handcart travel switch S8 in the time of test position connects, primary circuit is not charged, auxiliary contact HN contacting, earthed switch is in "on" position, travel switch S2 connects, press the button SB2 switch knob, contactor KM2 coil obtains electric, main noddle on contactor is connected, motor M 1 obtains electric, earthed switch starts to close a floodgate, now release button SB2, contactor is by the self-sustaining of KM2 auxiliary contact, when grounding switch tripping puts in place, travel switch S2 disconnects, contactor KM2 coil losing electricity, main contact disconnects, motor M 1 quits work, grounding switch tripping EO.
Claims (1)
1. a control circuit for middle-placed switch cabinet multifunctional electricity-detection, grounding trolley, is characterized in that: comprise rival car electronic enter the electrical verification earthed circuit controlled of the electronic separating brake of electrical verification ground connection, earthed switch of cabinet, offer for sale the turnover cabinet control circuit controlled and rival car, described turnover cabinet control circuit comprises the motor M 2 that drives moving of car, control motor M 2 is set in the supply line of motor M 2 works, contactor KM3 in parallel, the main contact of contactor KM4, in supply line, be connected to travel switch S1, travel switch S1 is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB3 in this Parallel Control circuit and auxiliary contact of contactor KM3 and a contact of contactor KM4, contactor KM3, travel switch S9 is composed in series, the parallel-connection structure of another route routing button SB4 in this Parallel Control circuit and auxiliary contact of contactor KM4 and a contact of contactor KM3, contactor KM4, travel switch S8 is composed in series, described electrical verification earthed circuit comprises motor M 1, control motor M 2 is set in the supply line of motor M 1 works, contactor KM1 in parallel, the main contact of contactor KM2, in supply line, be connected to auxiliary contact HN, one end of auxiliary contact HN is connected to travel switch S8 and travel switch S9 shunting means, the other end of auxiliary contact HN is connected with a Parallel Control circuit, the parallel-connection structure of the route routing button SB1 in this Parallel Control circuit and auxiliary contact of contactor KM1 and a contact of contactor KM2, contactor KM1, travel switch S1 is composed in series, the parallel-connection structure of another route routing button SB2 in this Parallel Control circuit and auxiliary contact of contactor KM2 and a contact of contactor KM1, contactor KM2, travel switch S2 is composed in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396226.3U CN204012226U (en) | 2014-07-18 | 2014-07-18 | The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396226.3U CN204012226U (en) | 2014-07-18 | 2014-07-18 | The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204012226U true CN204012226U (en) | 2014-12-10 |
Family
ID=52052169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420396226.3U Expired - Fee Related CN204012226U (en) | 2014-07-18 | 2014-07-18 | The control circuit of middle-placed switch cabinet multifunctional electricity-detection, grounding trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204012226U (en) |
-
2014
- 2014-07-18 CN CN201420396226.3U patent/CN204012226U/en not_active Expired - Fee Related
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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: 20141210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |