CN219535193U - Handcart switch cabinet with improved side sealing plate state monitoring - Google Patents
Handcart switch cabinet with improved side sealing plate state monitoring Download PDFInfo
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- CN219535193U CN219535193U CN202320320000.4U CN202320320000U CN219535193U CN 219535193 U CN219535193 U CN 219535193U CN 202320320000 U CN202320320000 U CN 202320320000U CN 219535193 U CN219535193 U CN 219535193U
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- circuit breaker
- side sealing
- sealing plate
- vacuum circuit
- state monitoring
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Abstract
The handcart switch cabinet with improved side sealing plate state monitoring comprises a vacuum circuit breaker with a first switching auxiliary contact and a second switching auxiliary contact, and a DC110V handcart locking electromagnet, a closing coil and a tripping coil; a side sealing plate state monitoring travel switch is arranged on a side plate of the cabinet body; the side sealing plate state monitoring travel switch is connected with the vacuum circuit breaker in parallel. The installation state of the side sealing plate is judged based on the clutch state monitoring of the physical contact of the side sealing plate and the side sealing plate, wherein the side sealing plate is installed on the side plate, and the auxiliary electric interlocking of the incoming line circuit breaker is reasonably opened and closed. When the side sealing plates are detached, the incoming line breaker trips; when the vacuum circuit breaker is at the working position, the switch cannot be closed; when the vacuum circuit breaker can be subjected to switching-on/off debugging at a test position, the handcart of the circuit breaker cannot swing into a working position, so that an obvious breaking point of a primary circuit is ensured; the potential safety hazard existing in the original equipment can be eliminated.
Description
Technical Field
The utility model belongs to the technical field of distribution boards, substations or switching devices for IPC classification H02B power supply or distribution, and particularly relates to handcart type switch cabinet equipment with an improved detection interlocking function for the dismounting state of an additionally arranged side sealing plate.
Background
The handcart type switch cabinet is characterized in that a detachable baffle is arranged in the cabinet body and separates a breaker chamber, a bus chamber and a cable chamber of the cabinet body; the baffle is provided with a hole into which the movable contact of the integrated current transformer can be inserted; the bus room of the cabinet body is internally provided with elements such as a breaker, a transformer, a lightning arrester and the like, the handcart room of the cabinet body is internally provided with a handcart rail, and a plum blossom contact arranged on the breaker and a static contact arranged in the bus room are matched to form an isolation plug of a clutch structure, so that the interchangeability of the handcart part is good. When in maintenance, only the handcart is needed to be replaced, thereby shortening maintenance power failure time and being applicable to places with important load or small building area. The interior of the handcart type switch cabinet is divided into small chambers according to the requirements of maintenance, insulation and the like so as to reduce the mutual influence. The small chambers are divided into a handcart chamber, a main bus chamber, a mutual inductor chamber, a relay protection chamber, an instrument chamber and the like.
The front of the cabinet body is provided with a door, and all the instruments are arranged on the inner side of the door or in the instrument room. When the door is opened during maintenance, the instrument can be read outside, and the cabinet is internally provided with illumination, so that the oil level of the oil-less circuit breaker or the arc-extinguishing chamber of the vacuum circuit breaker can be observed through the observation window on the door. The cart has three fixed operating positions: an operation position, a maintenance position and a test position. The handcart type switch cabinet also has a misoperation prevention function, when the electric circuit is in misoperation, the circuit breaker can be automatically opened, the grounding disconnecting link can not be closed when the circuit breaker is in a closing position, and the like. When the handcart of the handcart-type switch cabinet is in a working position, the primary isolation contact and the secondary isolation contact are both connected.
The existing switch cabinet comprises a handcart type switch cabinet, wherein a side sealing plate is arranged on the side elevation of the switch cabinet, and a side plate is arranged on the inner side of the side sealing plate. When the equipment is overhauled, the side sealing plates are required to be detached, and after the side sealing plates are detached, the primary circuit of the switch cabinet is connected or disconnected, but the secondary circuit is connected when the circuit breaker handcart is in a working position or a test position; at this time, the main bus may be in direct contact, so in the prior art, the side sealing plate is not installed or is installed and cannot be interlocked with equipment outage or switching on, and potential safety hazards of breaker misoperation switching on power transmission exist.
Disclosure of Invention
The utility model aims to solve the technical problem that the existing switch cabinet lacks functions of automatic detection and interlocking of the side sealing plate dismounting state, so that the equipment safety is lower.
Aiming at the problems and the technical requirements, the utility model provides a handcart switch cabinet with improved side sealing plate state monitoring, so as to achieve the required research purpose and function in a concise manner.
Therefore, an embodiment of the present utility model provides an improved switchgear apparatus for detecting a side seal plate dismounting state with an added travel switch, including: the cabinet body, the side plates, the rear side sealing plates, the mounting holes and the side sealing plate state monitoring travel switch; the middle part of the front side in the cabinet body is provided with a breaker chamber, the upper side of the breaker chamber is provided with an instrument chamber, the rear sides of the breaker chamber and the instrument chamber are provided with a bus chamber, the lower side of the bus chamber is provided with a cable chamber, the outer walls of the two sides of the cabinet body are provided with side plates, and the outer vertical surfaces of the side plates are provided with side sealing plates; the specific side sealing plates comprise rear side sealing plates and front side sealing plates; a bus bar is vertically arranged on the rear side of the bus bar chamber, a main bus bar is arranged on the bus bar, the front side of the bus bar is fixedly connected with a branch bar, the main bus bar is connected with a fixed contact arranged on the rear side of the rear wall of the breaker chamber in a forward extending way through the branch bar, a current transformer is arranged on the rear side wall of the joint part of the bus bar chamber and the cable chamber, and the current transformer is also connected with the fixed contact; the vacuum circuit breaker is arranged on the circuit breaker handcart, and the quincuncial contact matched with the static contact is arranged at the rear part of the circuit breaker handcart at the rear side of the vacuum circuit breaker in a stretching way. The vacuum circuit breaker is provided with a first opening and closing auxiliary contact and a second opening and closing auxiliary contact, and is further provided with a DC110V handcart locking electromagnet, a closing coil and a tripping coil. And a side sealing plate state monitoring travel switch is arranged on the side plate of the cabinet body. The side sealing plate state monitoring travel switch is connected with the vacuum circuit breaker in parallel.
Wherein, open the mounting hole on cabinet body curb plate, install side seal board state monitoring travel switch on the mounting hole. And mounting holes are formed at the corresponding positions on the sides, which are equal to the current transformer 7 in height.
The side sealing plate state monitoring travel switch is connected with the intermediate relay in series; the two ends of the side sealing plate state monitoring travel switch and the intermediate relay which are connected in series are respectively connected with the positive electrode of the small bus power supply; a vacuum circuit breaker is connected in parallel between the side sealing plate state monitoring travel switch and the two ends of the intermediate relay which are connected in series; the handcart locking electromagnet on the vacuum circuit breaker is connected with the test position of the vacuum circuit breaker in series; a closing coil on the vacuum circuit breaker is connected with a second relay in series with the working position through a second switching auxiliary contact; a tripping coil on the vacuum circuit breaker is connected with a third relay and the working position of the vacuum circuit breaker in series through a first opening and closing auxiliary contact; and a transfer switch is connected between the second relay and the positive electrode of the small bus power supply and between the first switching auxiliary contact and the positive electrode of the small bus power supply in a bridging manner.
And the two ends of the side sealing plate state monitoring travel switch and the intermediate relay which are connected in series are respectively connected with the small bus power supply anode and the small bus power supply cathode through the micro relay.
In particular, the test position of the vacuum circuit breaker is connected in parallel between the first relay and both ends of the test position of the vacuum circuit breaker.
In particular, the test position of the vacuum interrupter is connected in parallel between the second relay and both ends of the operating position.
In particular, the intermediate relay is installed in the instrument room.
Compared with the prior art, the utility model has the beneficial effects that: the installation state of the side sealing plate is judged based on the clutch state monitoring of the physical contact of the side sealing plate and the side sealing plate, wherein the side sealing plate is installed on the side plate, and the auxiliary electric interlocking of the wire inlet circuit breaker is reasonably opened and closed. When the side sealing plates are detached, the incoming line micro relay trips; when the vacuum circuit breaker is at the working position, the switch cannot be closed; when the vacuum circuit breaker can be subjected to switching-on/off debugging at a test position, the handcart of the circuit breaker cannot swing into a working position, so that an obvious breaking point of a primary circuit is ensured; the potential safety hazard existing in the original equipment can be eliminated. Therefore, under the condition that the side sealing plates are detached, no live operation or accidental misoperation electric shock accidents occur.
Drawings
The features and advantages of the present utility model will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be interpreted as limiting the utility model in any way.
Fig. 1 is a schematic diagram of the structure of the switchgear breaker trolley in the working position according to the utility model.
Fig. 2 is a schematic diagram of the structure of the switchgear breaker trolley in the test position according to the utility model.
Fig. 3 is a schematic diagram of a state monitoring travel switch for mounting a side sealing plate on a cabinet in embodiment 1.
Fig. 4 is an electrical schematic diagram of the circuit breaker in the test position and the open state in embodiment 1 of the present utility model.
Fig. 5 is a schematic diagram of a connection of a side seal board state monitoring circuit in embodiment 1 of the present utility model.
The reference numerals include:
the device comprises a cabinet body 1, a main bus 2, a bus bar 3, a branch bar 4, a fixed contact 5, a circuit breaker handcart 6 and a current transformer 7; side plate 101, instrument room 102, cable room 103, breaker room 104, bus bar room 105, rear side sealing plate 106, front side sealing plate 107; quincuncial contacts 601 and mounting holes 1011;
the vacuum circuit breaker QF, the handcart locking electromagnet Y0, the closing coil F2, the tripping coil F11, the test position S8, the working position S9, the first opening and closing auxiliary contact S11 and the second opening and closing auxiliary contact S12;
micro relay QF1, change over switch KK, side seal board state monitoring travel switch BX, intermediate relay KA.
Detailed Description
The principle of the utility model is that the dismounting state of the side sealing plate is collected to protect the safety of maintenance personnel.
In the utility model, a breaker chamber 104 is arranged in the middle of the inner front side of a cabinet body 1, an instrument chamber 102 is arranged on the upper side of the breaker chamber 104, a bus chamber 105 is arranged on the rear sides of the breaker chamber 104 and the instrument chamber 102, a cable chamber 103 is arranged on the lower side of the bus chamber 105, side plates 101 are arranged on the outer walls of the two sides of the cabinet body 1, and side sealing plates are arranged on the outer vertical surfaces of the side plates 101; the specific side sealing plates comprise a rear side sealing plate 106 and a front side sealing plate 107; a bus bar 3 is vertically arranged on the rear side in the bus bar chamber 105, a main bus bar 2 is arranged on the bus bar 3, the front side of the bus bar 3 is fixedly connected with a branch bar 4, the main bus bar 2 is connected with a fixed contact 5 arranged on the rear side of the rear wall of the breaker chamber 104 in a forward extending way through the branch bar 4, a current transformer 7 is arranged on the rear side wall of the joint part of the bus bar chamber 105 and the cable chamber 103, and the current transformer 7 is also connected with the fixed contact 5; the vacuum breaker QF is installed on the breaker handcart 6, and the quincuncial contact 601 matched with the fixed contact 5 is installed on the upper rear part of the breaker handcart 6 at the rear side of the vacuum breaker QF in a protruding mode. The vacuum circuit breaker QF has a first opening/closing auxiliary contact S11 and a second opening/closing auxiliary contact S12, and further has a DC110V handcart locking electromagnet Y0, a closing coil F2, and a tripping coil F11.
Referring to fig. 1, when a vacuum circuit breaker QF of a circuit breaker handcart 6 of a switch cabinet is in a working position, the circuit breaker handcart 6 is positioned in a circuit breaker chamber 104, a quincuncial contact 601 matched with a fixed contact 5 is spliced and meshed, a primary circuit of the switch cabinet is connected, and a secondary circuit of the switch cabinet is connected; at this time, the rear side sealing plate 106 and the front side sealing plate 107 are vertically attached to the outside of the upper side plate 101 of the cabinet body 1, and the side sealing plate state monitoring travel switch BX is pressed to close the conductive connection line. When the vacuum circuit breaker QF is switched on, the main bus 2 is electrified; when the vacuum circuit breaker QF is opened, the main bus bar 2 is not electrified.
Referring to fig. 2, when the switchgear breaker trolley 6 is in the test position, although the breaker trolley 6 is in the breaker chamber 104, the tulip contact 601 is pulled out of the breaking fixed contact 5, the switchgear primary circuit is broken, and meanwhile, the switchgear secondary circuit is still connected; at this time, if the rear side sealing plate 106 and the front side sealing plate 107 are not detached, the side sealing plate state monitoring travel switch BX is pressed to close the conductive connection line; if the rear side sealing plate 106 and the front side sealing plate 107 are detached, the contacts of the side sealing plate state monitoring travel switch BX are released, and the secondary circuit of the switch cabinet is interlocked and disconnected.
The utility model comprises the following steps: the cabinet body 1, the side plates 101, the rear side sealing plates 106, the mounting holes 1011 and the side sealing plate state monitoring travel switch BX;
the utility model is further described below with reference to the drawings and examples.
Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.
Example 1: as shown in fig. 3, a side seal plate state monitoring travel switch BX is mounted on a side plate 101 of the cabinet 1. Specifically, a mounting hole 1011 is formed in the side plate 101 of the cabinet body 1, and a side seal plate state monitoring travel switch BX is mounted on the mounting hole 1011; more specifically, mounting holes 1011 are formed in the side plates 101 at positions corresponding to the same height as the current transformer 7. The side sealing plate state monitoring travel switch BX is connected with the vacuum breaker QF in parallel.
Referring to fig. 4, when the rear side sealing plate 106 and the front side sealing plate 107 are installed on the outer vertical surface of the side plate 101 of the cabinet body 1, the side sealing plate state monitoring travel switch BX contacts are tightly pressed and closed by the rear side sealing plate 106. And when the rear side sealing plate 106 and the front side sealing plate 107 are detached or are not correctly installed in place, the contact of the side sealing plate state monitoring travel switch BX senses that the primary circuit of the switch cabinet is in interlocking disconnection.
In the embodiment of the utility model, referring to fig. 5, the side sealing plate state monitoring circuit module includes a side sealing plate state monitoring travel switch BX and an intermediate relay KA connected in series. The two ends of the side sealing plate state monitoring travel switch BX and the intermediate relay KA which are connected in series are respectively connected with the positive pole +KM of the small bus power supply and the negative pole-KM of the small bus power supply; a vacuum breaker QF is connected in parallel between the side sealing plate state monitoring travel switch BX and the two ends of the intermediate relay KA which are connected in series; the handcart locking electromagnet Y0 on the vacuum circuit breaker QF is connected in series with the first relay KA (13-14) and the test position S8 (52-53) of the vacuum circuit breaker QF; the closing coil F2 on the vacuum circuit breaker QF is connected in series with the second relay KA (23-24) and the working position S9 (55-56) through the second switching auxiliary contact S12; the tripping coil F11 on the vacuum circuit breaker QF is connected with the third relay KA (51-52) and the working position S9 (11-51) of the vacuum circuit breaker QF in series through the first opening and closing auxiliary contact S11; and a transfer switch KK is connected between the second relay KA (23-24) and the positive pole +KM of the small bus power supply and between the first switching auxiliary contact S11 and the positive pole +KM of the small bus power supply in a bridging manner.
In the foregoing, the two ends of the side sealing plate state monitoring travel switch BX and the intermediate relay KA which are connected in series are respectively connected with the positive pole +km of the small bus power supply and the negative pole-KM of the small bus power supply through the micro relay QF 1.
In the foregoing, the test position S8 (54-52) of the vacuum circuit breaker QF is connected in parallel between the first relay KA (13-14) and both ends of the test position S8 (52-53) of the vacuum circuit breaker QF.
In the foregoing, the test position S8 (57-58) of the vacuum circuit breaker QF is connected in parallel between the second relay KA (23-24) and both ends of the operating position S9 (55-56).
In the foregoing, the intermediate relay KA is installed in the instrument room 102.
In the embodiment of the utility model, the following steps are included:
circuit breaker trolley 6 closed loop: when the vacuum circuit breaker QF is in a test position, the first relay KA (13-14) is normally open, and the test position S8 (52-54) of the vacuum circuit breaker QF is normally open, so that a loop is not connected, a handcart locking electromagnet Y0 of the vacuum circuit breaker QF is electroless, and the vacuum circuit breaker QF cannot swing in and out; when the vacuum circuit breaker QF is not at the test position, the test position S8 (52-53) of the vacuum circuit breaker QF is changed from normal close to normal open; the test position S8 (52-54) of the vacuum breaker QF is changed from normal open to normal close; at this time, the vacuum circuit breaker QF is powered on by the carriage lock electromagnet Y0, and the circuit breaker carriage 6 can swing in and out.
Manual switching-on loop: when the change-over switch KK is switched to the switching-on position, the change-over switch KK (1-2) is switched on.
When the vacuum circuit breaker QF is at the test position, S8 (57-58) is normally closed, the F2 closing coil is electrified, the vacuum circuit breaker QF is closed, S12 is converted from normally closed to normally open after closing, and the closing loop is disconnected; when the vacuum circuit breaker QF is in the working position, the test position S8 (57-58) of the vacuum circuit breaker QF is normally closed to normally open, the working position S9 (55-56) of the vacuum circuit breaker QF is normally open to normally closed, and the second relay KA (23-24) is normally open, so that a closing loop is not closed and cannot be closed.
Manual trip circuit: when the vacuum circuit breaker QF is switched on, a first switching auxiliary contact S11 of the vacuum circuit breaker QF is normally opened to normally closed; when the change-over switch is switched to the switch-off position, the change-over switch KK (3-4) is switched on. The tripping coil F11 of the vacuum circuit breaker QF is electrified, the vacuum circuit breaker QF is opened, the first opening and closing auxiliary contact S11 of the vacuum circuit breaker QF is normally opened by normally closed switching after opening the vacuum circuit breaker QF, and the tripping circuit is disconnected.
Side sealing plate abnormal tripping: when the vacuum circuit breaker QF is in the working position, the working position S9 (11-51) of the vacuum circuit breaker QF is normally closed by normally open, the third relay KA (51-52) is normally closed, the circuit is switched on, the tripping coil F11 of the vacuum circuit breaker QF is electrified, and the vacuum circuit breaker QF trips.
And (3) monitoring and relaying by a side sealing plate: when the side sealing plates are abnormal, the side sealing plate state monitoring travel switch BX acts, the side sealing plate state monitoring travel switch BX (3-4) is normally open, the intermediate relay KA (A1-A2) is powered off, and the auxiliary point of the intermediate relay KA (A1-A2) is not switched.
When the side sealing plate is in a normal state: the side sealing plate monitoring travel switch BX (3-4) is normally opened and normally closed, the intermediate relay KA (A1-A2) is electrified, and the auxiliary point normally closed and normally opened side sealing plate abnormal tripping circuit of the third relay KA (51-52) is disconnected; the second relay KA (23-24) is normally opened to normally closed, and the vacuum circuit breaker QF can be manually switched on at the working position and the test position; the first relay KA (13-14) is normally opened and normally closed, the handcart locking electromagnet Y0 of the vacuum circuit breaker QF can be electrified at all positions, and the circuit breaker handcart 6 can swing in and out.
In the embodiment of the utility model, in the state that the side sealing plate is not installed, the side sealing plate state monitoring travel switch BX accurately detects that the side sealing plate is not installed or the installation is incorrect and reports that the state is abnormal, and when the vacuum circuit breaker QF is in a test position, the main bus 2 is in a power-off state because the primary circuit has an obvious disconnection point; the circuit breaker trolley 6 cannot be swung into the operating position. When the vacuum circuit breaker QF is in a working position, the vacuum circuit breaker QF trips, so that the main bus 2 is in a power-off state, the vacuum circuit breaker QF cannot be switched on, and the main bus 2 is in the power-off state; only after the side sealing plates are installed and the side sealing plate state monitoring travel switch BX detects that the side sealing plates are in a normal state, the vacuum circuit breaker QF can conduct power transmission operation, and personal safety of maintenance staff is guaranteed.
In the embodiment of the utility model, when the switch cabinet equipment is overhauled, the side sealing plates on the cabinet body 1 are removed, and the main bus 2 can be directly contacted after the side sealing plates are removed; normally, in a state that the side sealing plates are not installed, if the vacuum circuit breaker QF closing operation occurs, potential safety hazards exist in power transmission; in the utility model, the side sealing plate state monitoring travel switch BX and the side sealing plate state monitoring circuit module work, so that the safety problem can be avoided.
Preferably, the vacuum circuit breaker QF is HVX, and the vacuum circuit breaker QF switch has a test position S8 and an operating position S9.
Preferably, the micro relay QF1 is an HTB1Z-63 2P C6A product.
Preferably, the current transformer 7 is a LZZBJ9-10/C5 product.
Preferably, the change-over switch KK is pre-closed and is an LW39-16A-Z/4.1a/2Ak A67 opening and closing product.
Preferably, the side sealing plate state monitoring travel switch BX is an LXW5-11Q1-1NO1NC-DC5A travel switch.
Preferably, the intermediate relay KA is JZC4-22+F4-22 3A AC220V product.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached.
The present utility model will be described in further detail with reference to the above examples, and it should be noted that the present utility model is not limited thereto. It will be readily apparent to those skilled in the art that numerous simple deductions or substitutions may be made without departing from the general inventive concept and scope of the utility model as defined in the appended claims.
Claims (8)
1. The handcart switch cabinet with improved side sealing plate state monitoring comprises a cabinet body (1), side plates (101), a rear side sealing plate (106), mounting holes (1011) and a side sealing plate state monitoring travel switch (BX); the intelligent cabinet is characterized in that a breaker chamber (104) is arranged in the middle of the inner front side of the cabinet body (1), an instrument chamber (102) is arranged on the upper side of the breaker chamber (104), a bus chamber (105) is arranged on the rear sides of the breaker chamber (104) and the instrument chamber (102), a cable chamber (103) is arranged on the lower side of the bus chamber (105), side plates (101) are arranged on the outer walls of the two sides of the cabinet body (1), and side sealing plates are arranged on the outer vertical surfaces of the side plates (101); the concrete side sealing plates comprise a rear side sealing plate (106) and a front side sealing plate (107); a bus bar (3) is vertically arranged on the inner rear side of the bus bar chamber (105), a main bus bar (2) is arranged on the bus bar (3), the front side of the bus bar (3) is fixedly connected with a branch bar (4), the main bus bar (2) is connected with a fixed contact (5) arranged on the rear side of the rear wall of the breaker chamber (104) in a forward extending way through the branch bar (4), a current transformer (7) is arranged on the rear side wall of the joint part of the bus bar chamber (105) and the cable chamber (103), and the current transformer (7) is also connected with the fixed contact (5); a vacuum circuit breaker (QF) is arranged on the circuit breaker handcart (6), and a quincuncial contact (601) matched with the fixed contact (5) is arranged at the rear part of the circuit breaker handcart (6) at the rear side of the vacuum circuit breaker (QF) in a protruding way; the vacuum circuit breaker (QF) is provided with a first opening and closing auxiliary contact (S11) and a second opening and closing auxiliary contact (S12) and is provided with a DC110V handcart locking electromagnet (Y0), a closing coil (F2) and a tripping coil (F11); a side sealing plate state monitoring travel switch (BX) is arranged on a side plate (101) of the cabinet body (1); the side seal plate state monitoring travel switch (BX) is connected in parallel with the vacuum circuit breaker (QF).
2. The handcart switch cabinet with improved side seal plate state monitoring according to claim 1, wherein a mounting hole (1011) is formed in a side plate (101) of the cabinet body (1), and a side seal plate state monitoring travel switch (BX) is mounted on the mounting hole (1011).
3. The improved side closure plate condition monitoring handcart switch cabinet of claim 1 wherein the side closure plate condition monitoring travel switch (BX) and intermediate relay (KA) are connected in series; the two ends of a side sealing plate state monitoring travel switch (BX) and an intermediate relay (KA) which are connected in series are respectively connected with the positive pole (+KM) of a small bus power supply and the negative pole (-KM) of the small bus power supply; a vacuum circuit breaker (QF) is connected in parallel between two ends of a side sealing plate state monitoring travel switch (BX) and an intermediate relay (KA) which are connected in series; a handcart latch electromagnet (Y0) on a vacuum circuit breaker (QF) is connected in series with a first relay (KA (13-14)) and a test position (S8 (52-53)) of the vacuum circuit breaker (QF); a closing coil (F2) on the vacuum circuit breaker (QF) is connected in series with a second relay (KA (23-24)) and a working position (S9 (55-56)) through a second switching auxiliary contact (S12); a tripping coil (F11) on the vacuum circuit breaker (QF) is connected with a third relay (KA (51-52)) and an operating position (S9 (11-51)) of the vacuum circuit breaker (QF) in series through a first opening and closing auxiliary contact (S11); and a transfer switch (KK) is connected between the second relay (KA (23-24)) and the positive pole of the small bus power supply (+KM) and between the first switching auxiliary contact (S11) and the positive pole of the small bus power supply (+KM).
4. The handcart switch cabinet with improved side seal plate state monitoring according to claim 2, wherein a mounting hole (1011) is formed on the side plate (101) at the position corresponding to the same height as the current transformer (7).
5. A handcart switch cabinet with improved side seal plate state monitoring according to claim 3, characterized in that the two ends of the side seal plate state monitoring travel switch (BX) and the intermediate relay (KA) which are connected in series are respectively connected with the positive pole (+km) and the negative pole (-KM) of the busbar power supply through a micro relay (QF 1).
6. A handcart switch cabinet with improved monitoring of the state of the side sealing plates according to claim 3, characterized in that the test position (S8 (54-52)) of the vacuum circuit breaker (QF) is connected in parallel between the first relay (KA (13-14)) and the test position (S8 (52-53)) of the vacuum circuit breaker (QF).
7. A trolley switch cabinet with improved side closure plate condition monitoring according to claim 3, characterized in that the test position (S8 (57-58)) of the vacuum circuit breaker (QF) is connected in parallel between the second relay (KA (23-24)) and the two ends of the operating position (S9 (55-56)).
8. A handcart switch cabinet with improved side seal status monitoring according to claim 3, characterized in that the intermediate relay (KA) is installed in the instrument room (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320320000.4U CN219535193U (en) | 2023-02-27 | 2023-02-27 | Handcart switch cabinet with improved side sealing plate state monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320320000.4U CN219535193U (en) | 2023-02-27 | 2023-02-27 | Handcart switch cabinet with improved side sealing plate state monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219535193U true CN219535193U (en) | 2023-08-15 |
Family
ID=87630161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320320000.4U Active CN219535193U (en) | 2023-02-27 | 2023-02-27 | Handcart switch cabinet with improved side sealing plate state monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219535193U (en) |
-
2023
- 2023-02-27 CN CN202320320000.4U patent/CN219535193U/en active Active
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