CN209805411U - Short circuit prevention operating system of isolating switch - Google Patents
Short circuit prevention operating system of isolating switch Download PDFInfo
- Publication number
- CN209805411U CN209805411U CN201920602899.2U CN201920602899U CN209805411U CN 209805411 U CN209805411 U CN 209805411U CN 201920602899 U CN201920602899 U CN 201920602899U CN 209805411 U CN209805411 U CN 209805411U
- Authority
- CN
- China
- Prior art keywords
- circuit
- prevention
- short
- unlocking
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses an isolator short circuit prevention operating system, including preventing mistake control box, generating line isolator main cabinet, circuit isolator main cabinet, all integrated with electric locking return circuit and electric control return circuit in generating line isolator main cabinet and the circuit switch main cabinet, generating line isolator main cabinet and circuit switch main cabinet are put through to preventing mistake control box through the secondary cable respectively; a first-stage electric coded lock is arranged in the anti-misoperation control box and is connected with the short-circuit locking relay in series to form an anti-short-circuit locking loop; and the bus isolation switch main cabinet and the line switch main cabinet are respectively locked in the short circuit prevention locking loop through two-stage electric codes. The utility model discloses but any isolator's operation must strictly carry out in proper order according to the logical step of "five preventions" that set up in advance and unblock the operation, thoroughly solves the not enough that "five preventions" system exists, and the person and equipment safety are ensured in the effectual emergence that prevents the maloperation accident.
Description
Technical Field
The utility model relates to an electric power electric wire netting field particularly, relates to a isolator prevents short circuit operating system.
Background
In the prior art, in order to ensure safe operation of a power grid, one of important measures is power transformation equipment operation risk management and control, and whether the measure is provided or not and perfected is directly related to safe operation of the power transformation equipment. Because the five-prevention coded lock and the circuit breaker terminal bar of a plurality of five-prevention factories do not have the short-circuit prevention operation locking function, the phenomenon that the conductor short-circuit five-prevention coded lock or the circuit breaker terminal bar is used by mistake to force operation occurs sometimes, the circuit breaker is closed by mistake, and the circuit breaker is opened by mistake to cause personal and equipment accidents.
In the aspect of the implementation of misoperation prevention of the isolating switch, a five-prevention electric coded lock is mainly connected in series in an isolating switch operation loop, and then a computer key is used for logical unlocking operation so as to achieve the purpose of misoperation prevention. From the long-term use condition, can not prevent effectively that artificial malicious just, reverse side short circuit "five prevent electricity code lock" two electrode posts direct operation, and under the condition of not having five prevent logics, and a series of switching operation that carry out, very easily take place the malignant incident of maloperation, bring very big safety risk to people's body and equipment.
SUMMERY OF THE UTILITY MODEL
an object of the utility model is to provide an isolator prevents short circuit operating system, can effectively prevent directly to operate isolator with the method of "wire" short circuit five-prevention electricity code lock, can avoid not judging the emergence of maloperation isolator incident through "five-prevention" logic, but any isolator's operation must strictly carry out the unblock operation in proper order according to the "five-prevention" logic step that sets up in advance, thoroughly solve the not enough that "five-prevention" system exists, the effectual emergence that prevents the maloperation accident, ensure the person and equipment safety.
In order to achieve the technical purpose, the utility model discloses a technical scheme specifically as follows:
The utility model provides an isolator prevents short circuit operating system, is including preventing the total cabinet of mistake control box, bus isolator, the total cabinet of line isolator, and the total cabinet of bus isolator and line switch all integrate in the cabinet have electric locking return circuit and electric control return circuit, its characterized in that: the bus isolation switch main cabinet and the line switch main cabinet are respectively communicated with the anti-misoperation control box through secondary cables; a first-stage electric coded lock is arranged in the anti-misoperation control box and is connected with the short-circuit locking relay in series to form an anti-short-circuit locking loop; and the bus isolation switch main cabinet and the line switch main cabinet are respectively locked in the short circuit prevention locking loop through two-stage electric codes.
Furthermore, still including alternating current control power, alternating current control power air switch, electric locking contact, five prevent unblock return circuits and emergency unlocking control circuit in the mistake preventing control box, and five prevent that unblock return circuits and emergency unlocking control circuit all connect to electric locking contact.
furthermore, the five-prevention unlocking control circuit comprises a five-prevention unlocking relay and a normally open switch for controlling state switching, and a five-prevention unlocking time limit control circuit is connected in parallel on the five-prevention unlocking control circuit.
Furthermore, the five-prevention unlocking time limit control circuit comprises a five-prevention unlocking time relay and a control switch.
Further, urgent unblock control circuit is including connecting normally closed contact and the normally open contact on the AC control power and control normally closed contact and normally open contact change over switch's unblock button, be provided with urgent unblock relay between the electrical latching contact of normally open contact.
Furthermore, the primary electric coded lock is a five-prevention electric coded lock for preventing the front side and the back side from short circuit operation, and comprises a rotating electrode and a fixed electrode which are arranged in a short circuit prevention box, a wiring terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending mode, an insulation stroke push rod is connected among the contacts, and one end of the insulation stroke push rod is connected to the rotary electrode.
Furthermore, the contacts at least comprise three contacts which are respectively set as a normally open contact, a common contact and a normally closed contact, the common contact is arranged between the normally open contact and the normally closed contact, and each contact is respectively arranged on one copper wire.
The multiple contacts are separately arranged, the multiple auxiliary contacts are hermetically installed in the short-circuit prevention box for management, and the two electrodes are not directly connected into a circuit breaker or an isolating switch operation loop, so that direct operation of the five electric-proof coded locks for preventing positive and negative short circuits is realized.
Furthermore, one end of the rotating electrode is connected with a rotating shifting piece, the rotating shifting piece abuts against the end portion of the insulation stroke push rod, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod, and the copper conductor shifting pieces are arranged above or below the copper conductors respectively.
The rotary poking piece drives the insulation stroke rod to move upwards or downwards in the rotating process of the electrode rod, and meanwhile, the copper wire poking piece pokes the copper wire to move upwards or downwards and controls the contact or separation of the contacts.
Furthermore, the secondary electric coded lock is a five-prevention unlocking electric coded lock, and fuses are arranged on each five-prevention unlocking electric coded lock in a one-to-one correspondence mode.
Furthermore, three-phase motors for controlling the opening and closing of the bus disconnecting link and the line disconnecting link are respectively arranged in the bus isolating switch main cabinet and the line switch main cabinet, and a power supply unlocking control loop of the three-phase motors is arranged in the error-prevention control box.
The beneficial effects of the utility model reside in that: the utility model is different from the prior art, the utility model discloses be provided with total one-level electricity code lock to set up second grade electricity code lock on the control circuit of generating line switch and circuit switch respectively, must just can normally carry out the unblock operation through twice unblock, effectively prevent illegal short circuit. And if the device has a fault, the emergency unlocking button can be pressed to isolate the fault device, and the main knife, the line knife motor loop and the control loop are restored to the original five-prevention operation loop, so that the normal operation of the five-prevention operation loop is not influenced.
Drawings
Fig. 1 is a schematic structural view of an anti-short circuit operation system of an isolating switch provided by the present invention;
Fig. 2 is a first schematic circuit diagram of a short-circuit prevention operating system of the isolating switch provided by the present invention;
Fig. 3 is a schematic circuit diagram of a short-circuit prevention operating system of the isolating switch provided by the present invention;
Fig. 4 is the utility model provides a isolator prevents short circuit operating system's one-level electricity code lock schematic structure.
Fig. 5 is the utility model provides an isolator prevents short circuit operating system's long-range conceptual diagram of uploading of illegal unblock information.
Fig. 6 is the utility model provides a isolator prevents short circuit operating system's voice prompt circuit.
Reference numerals:
1-AC control power supply L11, N, 2-AC control power supply air switch 1DK, 3-power supply main air switch 2DK, 4-emergency unlocking button, 5-indicator fuse, 6-intelligent voice horn PS, 7-power indicator LD1, 8-five-prevention unlocking indicator HD1, 9-illegal unlocking indicator HD2, 10-emergency unlocking indicator HD3, 11-short circuit locking relay KM1, 12-five-prevention unlocking relay KM2, 13-emergency unlocking relay KM3, 14-five-prevention unlocking time relay SJ1, 15-first-level electric coding lock, 16-electric locking contact DL1, 17-door handle lock, 18-anti-error control box, 19-motor loop connecting terminal, 20-mother knife operation motor 1M, 21-line knife operation motor 2M, and, 22-control circuit connecting terminal, 23-fuse FU2, 24-mother knife five-prevention electric coding lock WF1, 25-mother knife electric locking circuit, 26-mother knife electric control circuit, 27-fuse FU3, 28-line knife five-prevention electric coding lock WF2, 29-line knife electric locking circuit, 30-line knife electric control circuit, 31-bus isolating switch main cabinet, 32-line isolating switch main cabinet, 33-secondary cable, 34-electric coding lock body, 35-normally open contact, 36-common contact, 37-normally closed contact, 38-spring piece, 39-rotating electrode, 40-rotating plectrum, 41-insulation stroke push rod and 42-fixed electrode.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
as shown in fig. 1-6, an isolating switch short circuit prevention operation system includes an error prevention control box 18, a bus isolating switch main cabinet 31 and a line isolating switch main cabinet 32, wherein an electrical locking loop and an electrical control loop are integrated in both the bus isolating switch main cabinet 31 and the line switch main cabinet 32, and the bus isolating switch main cabinet 31 and the line switch main cabinet 32 are respectively connected to the error prevention control box 18 through a secondary cable 33; a first-stage electric coded lock 15 is arranged in the anti-misoperation control box 18, and the first-stage electric coded lock 15 is connected with a short-circuit locking relay in series to form an anti-short-circuit locking loop; and the bus isolation switch main cabinet 31 and the line switch main cabinet 32 are respectively locked to the short circuit prevention locking loop through two-stage electric codes.
Still include alternating current control power 1, alternating current control power 1 air switch 2, electric locking contact 16, five prevent unblock return circuits and emergency unlocking control circuit in preventing mistake control box 18, and five prevent unblock return circuits and emergency unlocking control circuit all connect to electric locking contact 16. The five-prevention unlocking control circuit comprises a five-prevention unlocking relay and a normally open switch for controlling state switching, and a five-prevention unlocking time limit control circuit is connected in parallel on the five-prevention unlocking control circuit. The five-prevention unlocking time limit control circuit comprises a five-prevention unlocking time relay and a control switch. The emergency unlocking control circuit comprises a normally closed contact 37 and a normally open contact 35 which are connected to an alternating current control power supply, and an unlocking button for controlling the normally closed contact 37 and the normally open contact 35 to switch, and an emergency unlocking relay is arranged between the normally open contact 35 and the electric locking contact.
The primary electric coded lock 15 is a five-prevention electric coded lock for preventing front and back short circuit operation, and comprises a rotating electrode 39 and a fixed electrode 42 which are arranged in a short circuit prevention box, a connecting terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending manner, an insulation stroke push rod 41 is connected among the contacts, and one end of the insulation stroke push rod 41 is connected to the rotating electrode 39.
The rotating electrode 39 is fixedly supported by a rotatable electrode 39 seat and a bearing and is arranged in the electric coding lock body 34, can flexibly rotate for 360 degrees and has electric conductivity, and the rotating angle of the rotatable plectrum 40 can be arbitrarily adjusted and installed at the tail end of the rotatable electrode 39 according to the angle requirement and is fixed by a fixing nut. When the computer key is inserted into the electric code lock body 34 and presses an unlocking button, the unlocking operating rod rotates 90 degrees clockwise, and simultaneously the rotatable plectrum 40 also rotates 90 degrees to stir the insulation stroke push rod 41 to move upwards, so that the common contact 36 is opened to the normally closed contact 37 and is closed to the normally open contact 35 to achieve the purpose of unlocking control of an electric circuit. The fixed electrode 42 is fixedly supported by the fixed electrode 42 seat and is arranged inside the electric code lock body 34, and the fixed electrode is non-rotatable and conductive and is used for reliably positioning, guiding and fixedly supporting a fixed bolt of a computer key. When the computer key unlocking button is released, the unlocking operating rod drives the rotatable shifting piece 40 to rotate 90 degrees anticlockwise, and the auxiliary contact and the insulation stroke push rod 41 automatically return to the initial state under the action of the spring piece 38.
The contacts at least comprise three contacts which are respectively set as a normally open contact 35, a common contact 36 and a normally closed contact 37, the common contact 36 is arranged between the normally open contact 35 and the normally closed contact 37, and each contact is respectively arranged on one copper wire. One end of the rotating electrode 39 is connected with a rotating shifting piece 40, the rotating shifting piece 40 abuts against the end of an insulation stroke push rod 41, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod 41, and the copper conductor shifting pieces are respectively arranged above or below the copper conductors.
Specifically, the contacts are preferably three, and are respectively provided as a normally open contact 35, a common contact 36, and a normally closed contact 37, the common contact 36 is provided between the normally open contact 35 and the normally closed contact 37, and each contact is provided on one copper wire. At this time, the copper wire paddles are disposed below the normally open contact 35, above the normally closed contact 37 and the common contact 36, respectively. The rotary paddle 40 drives the insulation stroke rod to move up or down during the rotation of the electrode rod, while the copper wire paddle pulls the copper wire up or down and controls the contact or separation between the plurality of contacts. In the process, when the insulation stroke rod moves upwards, the copper wire shifting piece of the common contact 36 is driven to move upwards until the copper wire of the normally closed contact 37 is abutted, and the copper wire is moved upwards, the normally closed contact 37 and the common contact 36 can not be contacted in the process, and the normally open contact 35 moves upwards to be in series contact with the common contact 36. Conversely, when the insulating stroke rod moves down, the normally closed contact 37 is driven to be connected with the common contact 36 in series. The multiple contacts are separately arranged, the multiple auxiliary contacts are hermetically installed in the short-circuit prevention box for management, and the two electrodes are not directly connected into a circuit breaker or an isolating switch operation loop, so that direct operation of the five electric-proof coded locks for preventing positive and negative short circuits is realized.
When the normally open contact 35 and the normally closed contact 37 are connected with the external functional circuit, the normally open contact 35 can realize starting of a five-prevention unlocking holding circuit and serve as a circuit breaker and an isolating switch operation circuit for locking; the normally closed contact 37 can realize the starting of the illegal short circuit locking loop or the releasing of the illegal short circuit locking loop.
The secondary electric coded lock is a five-prevention unlocking electric coded lock, and fuses are arranged on each five-prevention unlocking electric coded lock in a one-to-one correspondence mode.
The bus isolation switch main cabinet 31 and the line switch main cabinet 32 are respectively provided with a three-phase motor for controlling the opening and closing of the bus disconnecting link and the line disconnecting link, and a power supply unlocking control loop of the three-phase motor is arranged in the error-prevention control box 18.
When the anti-misoperation control box is used specifically, as shown in fig. 1, an alternating current control power supply air switch 1DK (2), a power supply main air switch 2DK (3), an emergency unlocking button 4, an indicator lamp fuse 5, an intelligent voice horn PS (6), a power indicator lamp LD1(7), a five-prevention unlocking indicator lamp HD1(8), an illegal unlocking indicator lamp HD2(9), an emergency unlocking indicator lamp HD3(10), a short-circuit locking relay KM1(11), a five-prevention unlocking relay KM2(12), an emergency unlocking relay KM3(13), a five-prevention unlocking time relay SJ1(14) and a primary electric coding lock 15 are installed in the anti-misoperation control box 18 in an integrated manner. The bus isolation switch main cabinet 31 and the line switch main cabinet 32 are respectively arranged on the outer side of the anti-misoperation control box 18 and are connected to the anti-misoperation control box 18 through a secondary cable 33, and secondary electric coding locks, namely five-prevention electric coding locks in the prior art, are arranged in the bus isolation switch main cabinet 31 and the line switch main cabinet 32.
As shown in fig. 2-3, explaining the circuit principle of the present invention in detail, two electrodes of the primary electrically coded lock 15 are connected in series with the short-circuit-preventing latching relay KM1(11) in the short-circuit-preventing latching loop as an illegal operation triggering latching loop. Once the loop is operated in an illegal short circuit mode, the instantaneous short circuit latching relay KM1(11) performs excitation action; the normally open contact KM1-1 is closed and self-maintained; the normally closed contact KM1-6 is used for disconnecting the electric control loop of the locking female knife; the normally closed contact KM1-7 is used for disconnecting the electric control loop of the locking wire knife; the normally closed contact KM1-2 disconnects the five-prevention unlocking and electric locking loop (prevents the five-prevention unlocking loop from misoperation and removes an illegal operation locking state); the normally open contact KM1-4 is closed to start the voice prompt loop and the intelligent voice loudspeaker prompts 'illegal operation and operation forbidden' to warn illegal operators; the normally open contact KM1-3 is closed, and an illegal unlocking indicator lamp is on; the normally open contact KM1-5 is closed to start the public measurement and control remote alarm loop so as to inform the on-duty dispatcher that an illegal person has short-circuit five-prevention coded lock operation behavior on the working site. Once the short-circuit prevention locking loop is started, all operations are locked permanently, and management personnel need to release the locking state through five-prevention logic steps or through an emergency unlocking button 4.
And normal five prevent unlocking operations: the centralized anti-misoperation device has the advantages that the electrical locking contact DL1(16) of the breaker is connected in series with the five-prevention unlocking loop, when the main knife and the line knife are operated, the switching position at the breaker is firstly confirmed to meet the operation condition, and the occurrence of malignant electrical misoperation accidents of the on-load disconnecting link is effectively prevented. When a microcomputer five-prevention system is used for logical invoicing and computer key transmission, when the computer key is inserted into a primary electric coded lock 15 for unlocking operation, a normally closed contact 37SQ1-1 is arranged in the electric coded lock, an anti-short circuit locking loop is disconnected, a normally open contact 35SQ1-2 is closed, the five-prevention unlocking loop and an electric locking loop are connected, a five-prevention unlocking relay KM2(12) performs excitation action, a five-prevention unlocking time relay SJ1(14) performs excitation action timing (the unlocking state keeps timing for 5min), an instant contact SJ1-2 is closed, an intelligent voice horn of the intelligent voice loop is connected to prompt the fact that the intelligent voice horn is correct, please operate! The normally open contact KM2-1 is closed and self-maintained, the normally open contact KM2-3 is closed, the five-prevention unlocking indicator lamp HD1(8) is lightened, the normally closed contacts KM2-2 and KM2-4 are disconnected to remove the short-circuit prevention locking loop function, the normally open contact KM2-5 is closed to provide a continuous operation power supply for the master knife, the wire knife motor and the control loop, and then an operator inserts a computer key into the master knife five-prevention electric coding lock WF1(24) and the wire knife five-prevention electric coding lock WF2(28) to perform opening and closing operation on the master knife and the wire knife so as to complete the whole unlocking operation process.
special case emergency unlocking operation: when the emergency unlocking button needs to be unlocked in an emergency, an administrator can open the door handle lock 17 immediately and slightly press the emergency unlocking button 4, the normally closed contact SA1-1 of the emergency unlocking button opens the short-circuit prevention loop and the five-prevention unlocking loop, the normally open contact SA1-2 is closed to start the emergency unlocking control loop, the emergency unlocking relay KM3(13) performs excitation action, the normally open contact KM3-2 is closed to turn on the emergency unlocking indicator lamp HD3(10), and the normally open contact KM3-1 is closed to provide a sustainable emergency operation power supply for the main knife, the line knife motor and the control loop so as to ensure all operations in the emergency.
In fig. 2-3, the component cooperation must be according to southern electric network "the transformer substation is handed over, direct current electrical power system technical specification" requires that the power end should select "C type" air switch, and the end selects "B type" air switch, and power end "C type" air switch and exchange control power air switch 1DK (2) (2), power supply total air switch 2DK (3), pilot lamp fuse 5, fuse FU2(23), fuse FU3(27) and have the selectivity cooperation and remove the trouble to realize the stage difference cooperation. Avoiding the power supply and the control loop from tripping more than once and enlarging the accident range.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Isolator prevents short circuit operating system, including preventing the total cabinet of mistake control box, bus isolator, the total cabinet of circuit isolator, the total cabinet of bus isolator and circuit switch all integrate in the total cabinet of cabinet and circuit switch have electric locking return circuit and electric control circuit, its characterized in that: the bus isolation switch main cabinet and the line isolation switch main cabinet are respectively communicated with the anti-error control box through secondary cables; a first-stage electric coded lock is arranged in the anti-misoperation control box and is connected with the short-circuit locking relay in series to form an anti-short-circuit locking loop; and the bus isolation switch main cabinet and the line switch main cabinet are respectively locked in the short circuit prevention locking loop through two-stage electric codes.
2. The isolating switch short-circuit prevention operating system of claim 1, characterized in that: still including alternating current control power, alternating current control power air switch, electric locking contact, five prevent unblock return circuits and urgent unblock control circuit in the mistake preventing control box, and five prevent that unblock return circuits and urgent unblock control circuit all connect to electric locking contact.
3. The isolating switch short-circuit prevention operating system of claim 2, characterized in that: the five-prevention unlocking control circuit comprises a five-prevention unlocking relay and a normally open switch for controlling state switching, and a five-prevention unlocking time limit control circuit is connected in parallel on the five-prevention unlocking control circuit.
4. The isolating switch short-circuit prevention operating system of claim 3, characterized in that: the five-prevention unlocking time limit control circuit comprises a five-prevention unlocking time relay and a control switch.
5. The isolating switch short-circuit prevention operating system of claim 2, characterized in that: the emergency unlocking control circuit comprises a normally closed contact and a normally open contact which are connected to an alternating current control power supply, and an unlocking button for controlling the normally closed contact and the normally open contact to switch, and an emergency unlocking relay is arranged between the normally open contact and the electrical latching contact.
6. The isolating switch short-circuit prevention operating system of claim 1, characterized in that: the primary electric coded lock is a five-prevention electric coded lock for preventing front and back short circuit operation, and comprises a rotating electrode and a fixed electrode which are arranged in a short circuit prevention box, a wiring terminal and a computer key matched with a lock body; the wiring terminal is provided with a plurality of mutually disconnected contacts through a plurality of copper wires in an extending mode, an insulation stroke push rod is connected among the contacts, and one end of the insulation stroke push rod is connected to the rotary electrode.
7. the isolating switch short-circuit prevention operating system of claim 6, wherein: the contact includes three at least, sets up to normally open contact, public contact, normally closed contact respectively, and public contact sets up between normally open contact and normally closed contact, and every contact sets up respectively on a copper wire.
8. The isolation switch short-circuit prevention operating system of claim 6, wherein: one end of the rotating electrode is connected with a rotating shifting piece which abuts against the end part of the insulation stroke push rod, a plurality of copper conductor shifting pieces are arranged on the insulation stroke push rod, and the copper conductor shifting pieces are respectively arranged above or below the copper conductors.
9. The isolating switch short-circuit prevention operating system of claim 1, characterized in that: the secondary electric coded lock is a five-prevention unlocking electric coded lock, and fuses are arranged on each five-prevention unlocking electric coded lock in a one-to-one correspondence mode.
10. The isolating switch short-circuit prevention operating system of claim 1, characterized in that: the bus isolation switch main cabinet and the line switch main cabinet are respectively internally provided with a three-phase motor for controlling the opening and closing of a bus disconnecting link and a line disconnecting link, and a power supply unlocking control loop of the three-phase motor is arranged in the error-prevention control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920602899.2U CN209805411U (en) | 2019-04-29 | 2019-04-29 | Short circuit prevention operating system of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920602899.2U CN209805411U (en) | 2019-04-29 | 2019-04-29 | Short circuit prevention operating system of isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805411U true CN209805411U (en) | 2019-12-17 |
Family
ID=68831417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920602899.2U Active CN209805411U (en) | 2019-04-29 | 2019-04-29 | Short circuit prevention operating system of isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416018A (en) * | 2019-04-29 | 2019-11-05 | 贵州电网有限责任公司 | One kind keeping apart official seal short-circuit operation system |
-
2019
- 2019-04-29 CN CN201920602899.2U patent/CN209805411U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416018A (en) * | 2019-04-29 | 2019-11-05 | 贵州电网有限责任公司 | One kind keeping apart official seal short-circuit operation system |
| CN110416018B (en) * | 2019-04-29 | 2021-06-29 | 贵州电网有限责任公司 | Short circuit prevention operating system for isolating switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102790426A (en) | Improved spare power source automatic switch method for single bus sectionalized operation of power substation | |
| EP3945537B1 (en) | A hybrid switching apparatus of the withdrawable type | |
| CN209805411U (en) | Short circuit prevention operating system of isolating switch | |
| CN101685944A (en) | Double safety switch box | |
| CN109192569B (en) | Control method for locking between three-station grounding switch and breaker opening | |
| CN110416018B (en) | Short circuit prevention operating system for isolating switch | |
| CN205646517U (en) | Construction site distribution box | |
| CN112509850A (en) | Ground knife electric locking device and circuit interval with same | |
| CN110223885B (en) | Prevent concentrated mistake device of preventing short circuit operation circuit breaker | |
| CN207819446U (en) | A kind of five anti-loop control systems for hybrid gas insulation switchgear | |
| CN2929950Y (en) | Fall-down type fuse of radio remote control with lock device | |
| CN210091944U (en) | Anti-misoperation device for preventing manual operation of isolating switch in operation | |
| CN201674143U (en) | Mine general handcart type vacuum power distribution cabinet | |
| CN209804485U (en) | centralized anti-misoperation device for short-circuit operation prevention circuit breaker | |
| CN201466492U (en) | Electrical anti-maloperation locking device for ground stud tip | |
| CN210316902U (en) | Entrance guard system for preventing mistakenly entering electrified interval | |
| CN110137008B (en) | Prevent mistake and go into electrified spaced access control system | |
| CN210724305U (en) | Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system | |
| CN209708893U (en) | A kind of five anti-electric puzzle locks of anti-positive and negative short-circuit operation | |
| CN217159267U (en) | 10KV PT cabinet breakdown safety state feedback circuit | |
| CN110137009B (en) | Anti-misoperation device for preventing manual operation of isolating switch in operation | |
| CN214069563U (en) | Novel GIS circuit breaker three-phase inconsistent protection circuit | |
| CN215185051U (en) | 10KV middle-placed switch cabinet with earthing switch locking | |
| CN211879908U (en) | Prevent overloaded intelligent distribution device | |
| CN212622786U (en) | Box-type transformer with high-voltage live display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |