CN107464722B - Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof - Google Patents

Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof Download PDF

Info

Publication number
CN107464722B
CN107464722B CN201710877698.9A CN201710877698A CN107464722B CN 107464722 B CN107464722 B CN 107464722B CN 201710877698 A CN201710877698 A CN 201710877698A CN 107464722 B CN107464722 B CN 107464722B
Authority
CN
China
Prior art keywords
permanent magnet
switching
fuse
magnet operating
rod
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
Application number
CN201710877698.9A
Other languages
Chinese (zh)
Other versions
CN107464722A (en
Inventor
林祥杰
张红彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Fuzhou Tianyu Electric Co Ltd
Original Assignee
State Grid Corp of China SGCC
Fuzhou Tianyu Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Fuzhou Tianyu Electric Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710877698.9A priority Critical patent/CN107464722B/en
Publication of CN107464722A publication Critical patent/CN107464722A/en
Application granted granted Critical
Publication of CN107464722B publication Critical patent/CN107464722B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/42Driving mechanisms
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28Power arrangements internal to the switch for operating the driving mechanism using electromagnet

Abstract

The invention relates to a permanent magnet operating mechanism of a load switch-fuse combined electrical apparatus and a control method thereof, comprising three bistable permanent magnet operating mechanisms, wherein the three bistable permanent magnet operating mechanisms are respectively connected with three phases of a load switch, and each bistable permanent magnet operating mechanism is respectively matched with an arc extinguish chamber of the load switch through an insulating pull rod to realize switching on and switching off; the three bistable permanent magnet operating mechanisms are controlled by a control unit; still include an auxiliary mechanism, auxiliary mechanism includes a curb plate and sets up proximity switch, a micro-gap switch, the switching-on/off indication connecting lever and the first even board on the curb plate, the first link plate through a connecting rod with the switching-on/off indication connecting lever is connected, proximity switch and a micro-gap switch set up in the side of the first even board to proximity switch links with the control unit electricity, and a micro-gap switch links with the controller electricity of cubical switchboard. The invention has the beneficial effects that: the service life is long, the reliability is high, and the device is used for controlling the switching on and switching off of the load switch-fuse combined electrical appliance.

Description

Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof
Technical Field
The invention relates to a permanent magnet operating mechanism of a load switch-fuse combined electrical apparatus and a control method thereof.
Background
The old city network is improved by the country, and the ring network is required to be adopted as much as possible for a newly-built city so as to prevent the interruption of power supply. Not circuit breakers but load switch-fuse combinations are widely used in ring network power supply units and box substations. A few domestic manufacturers have started to produce the removable vacuum load switch and the combined electrical apparatus thereof. The permanent magnet operating mechanism is used in a large amount in the vacuum circuit breaker due to the advantages of few parts, no need of electric maintenance, high reliability, long service life and the like, and related technologies including control are quite mature.
Disclosure of Invention
The invention aims to overcome the defects and provides a permanent magnet operating mechanism of a load switch-fuse combined electrical appliance and a control method thereof, so as to realize reliable switching on and off.
The technical scheme adopted by the invention for solving the technical problems is as follows: a permanent magnet operating mechanism of a load switch-fuse combined electrical apparatus is provided, the load switch-fuse combined electrical apparatus is accommodated in a box body, the permanent magnet operating mechanism comprises three bistable permanent magnet operating mechanisms arranged on the box body, the three bistable permanent magnet operating mechanisms are respectively connected with three phases of a load switch, and each bistable permanent magnet operating mechanism is respectively matched with an arc extinguish chamber of the load switch through an insulating pull rod to realize switching on and switching off; the three bistable permanent magnet operating mechanisms are controlled by a control unit; the auxiliary mechanism comprises two side plates matched with the box body, and a proximity switch, a first microswitch, a switching-on/off indicating crank arm and a first connecting plate which are arranged on the two side plates, wherein the first connecting plate is used for receiving action information of the bistable permanent magnet operating mechanism and is matched and connected with the bistable permanent magnet operating mechanism, the first connecting plate is connected with the switching-on/off indicating crank arm through a connecting rod, and the switching-on/off indicating crank arm is rotatably arranged on one side plate and is hinged with the connecting rod; the proximity switch and the first microswitch are arranged at the side of the first connecting plate, the proximity switch is electrically connected with the control unit, and the first microswitch is electrically connected with a controller of the switch cabinet.
Furthermore, the auxiliary mechanism also comprises a fuse tripping rod, a fuse tripping connecting rod and a second microswitch, wherein the fuse tripping rod is arranged on the box body and used for receiving the fusing mechanical action of the fuse; the fuse tripping rod is hinged with the fuse tripping connecting rod, and the second microswitch is arranged beside the fuse tripping connecting rod and is matched with the fuse tripping connecting rod for switching; the second microswitch is electrically connected with the control unit.
Furthermore, the auxiliary mechanism further comprises an opening and closing button, the opening and closing button is arranged on a panel of the combined electrical appliance, and the opening and closing button is electrically connected with the control unit.
Further, the box is fixed on a chassis truck, be equipped with the interlocking plate that can shutting chassis truck business turn over on the chassis truck, the interlocking plate stretches into the bottom half through the box bottom plate, the upper end of a first bent plate of lower extreme fixed connection of first even board, the lower extreme of first bent plate is buckled the back and is stretched into to setting up in the second bent plate on the box bottom plate, the front end of first bent plate is put in the top of interlocking plate, the second bent plate is the arch shape, erects in on the box bottom plate.
Furthermore, the bistable permanent magnet operating mechanism consists of a movable guide rod, an end cover, a movable iron core, a closing coil, a magnetizer, a magnetic yoke and a separating coil, wherein the movable guide rod is connected with an insulating pull rod, and the insulating pull rod is connected with a movable contact of the corresponding arc extinguish chamber; the end cover is fixedly connected with the magnetic yoke in a screw mode; the closing coil, the magnetizer and the opening coil are sequentially arranged from front to back by taking the movable iron core as an axis.
Further, the energy storage device also comprises an energy storage capacitor, and the energy storage capacitor is electrically connected with the control unit; and the closing coil and the opening coil are electrically connected with the control unit.
Furthermore, the first connecting plate is fixedly connected with a movable guide rod of the bistable permanent magnet operating mechanism.
Furthermore, the auxiliary mechanism further comprises a manual brake separating rod rotatably arranged on the side plate, and the manual brake separating rod is matched and abutted with the first connecting plate.
The invention also provides a control method of the permanent magnet operating mechanism of the load switch-fuse combined electrical apparatus, which comprises the following steps that three bistable permanent magnet operating mechanisms 1 are correspondingly arranged on a box body, the three bistable permanent magnet operating mechanisms are respectively matched with load switch arc-extinguishing chambers corresponding to the load switch through an insulating pull rod to realize the switching-on and switching-off operations of the combined electrical apparatus, when the bistable permanent magnet operating mechanisms drive the load switch arc-extinguishing chambers to switch on and off, a movable guide rod of the bistable permanent magnet operating mechanisms drives a first connecting plate to act, a proximity switch receives an action signal of the first connecting plate and sends the action signal to a control unit to provide switching-on and switching-off position signals for the control unit, and a switching-on and switching-off indicating crank arm indicates the switching-on and switching-off positions of the combined; the first microswitch receives the action signal of the first connecting plate at the same time and provides a switching-on/off position signal for the switch cabinet; when one phase fuse is fused due to overload current, the striker of the fuse rushes out to drive the fuse tripping connecting rod to move downwards, the second microswitch is switched through the fuse tripping rod and sends a closing signal to the control unit, the control unit receives the signal to supply power to the opening coil of the three-phase permanent magnet operating mechanism, and the three-phase permanent magnet mechanism drives the three-phase arc extinguish chamber to open the switch simultaneously.
Furthermore, a switching-on/off button can be arranged on the panel of the combined electrical appliance, and a switching-on/off command is sent to the control unit through the switching-on/off button to perform switching-on/off operation on the combined electrical appliance.
Compared with the prior art, the invention has the following beneficial effects: the permanent magnet operating mechanism adopts a bistable structure, and a bistable permanent magnet operating mechanism is arranged in each phase, so that the reliability is high and the stability is good; the invention realizes the switching-on and switching-off position indication of the load switch-fuse combined electrical apparatus through the auxiliary mechanism, and can carry out switching-on and switching-off operation through the auxiliary mechanism.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a schematic diagram of the external structure of a load switch-fuse combined electrical appliance equipped with the permanent magnet operating mechanism.
Fig. 2 is a schematic diagram of the internal structure of the load switch-fuse combined electrical appliance equipped with the permanent magnet operating mechanism.
Fig. 3 is an installation diagram of the permanent magnet operating structure according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an auxiliary mechanism according to an embodiment of the present invention.
In the figure: 1-a bistable permanent magnetic operating mechanism; 10-moving the guide rod; 2-an auxiliary mechanism; 20-side plate; 21-a fuse trip bar; 22-fuse trip link; 23-a proximity switch; 24-a first microswitch; 25-a second microswitch; 26-a first tie sheet; 27-a first flexural plate; 28-a second flexural plate; 29-switching on and switching off indicating crank arms; 3-a manual brake separating rod; 4-switching on and switching off a brake button; 5-a fuse; 6-load switch arc extinguish chamber.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 to 4, the permanent magnet operating mechanism of the load switch-fuse combined electrical apparatus of the present embodiment includes three bistable permanent magnet operating mechanisms 1 disposed on the box body, and each bistable permanent magnet operating mechanism 1 is respectively matched with the arc extinguish chamber of the load switch through an insulating pull rod to realize switching on and off; the three bistable permanent magnet operating mechanisms 1 are controlled by a control unit; also comprises an auxiliary mechanism 2, wherein the auxiliary mechanism 2 comprises Two are The operating mechanism comprises a side plate 20, and a proximity switch 23, a first microswitch 24, a switching-on/off indicating crank arm 29 and a first connecting plate 26 which are arranged on the two side plates 20, wherein the first connecting plate 26 is used for receiving the action information of the bistable permanent magnet operating mechanism 1 and is in fit connection with the bistable permanent magnet operating mechanism 1, the first connecting plate 26 is connected with the switching-on/off indicating crank arm 29 through a connecting rod, and the switching-on/off indicating crank arm 29 is rotatably arranged on the side plate 20 and is hinged to the connecting rod; the proximity switch 23 is arranged beside the first connecting plate 26, the first microswitch 24 is arranged in front of the first connecting plate 26, the proximity switch 23 is electrically connected with the control unit, and the first microswitch 24 is electrically connected with a controller of the switch cabinet.
As can be seen from the above, the present invention has the following advantageous effects: the transmission mode of the bistable permanent magnet mechanism adopts a direct-acting type, so that the transmission efficiency reaches the highest, the mechanical reliability is improved, the service life of the combined electrical appliance is prolonged, and the maintenance-free effect can be realized. Through the auxiliary mechanism 2, the switching-on and switching-off position indication of the load switch-fuse combined electrical appliance is realized, and the operation is safer and more reliable.
The control unit controls the switching-on and switching-off process of the combined electrical appliance according to an external instruction, when a switching-on instruction is received, the energy storage capacitor and a switching-on coil of the permanent magnet operating mechanism are connected, and the permanent magnet operating mechanism switches on the arc extinguish chamber through the insulating pull rod; when receiving a switching-off command, the switching-off coil of the energy storage capacitor and the permanent magnet operating mechanism is connected, and the permanent magnet operating mechanism switches off the arc extinguish chamber through the insulating pull rod. In the process of switching-on operation, under the drive of the movable guide rod 10 of the permanent magnet operating mechanism, the first connecting plate 26 drives the switching-on/off indicating crank arm 29 to rotate anticlockwise through the connecting rod to indicate the switching-on position; in the process of opening the brake, under the driving of the movable guide rod 10 of the permanent magnet operating mechanism, the first connecting plate 26 drives the opening and closing indicating crank arm 29 to rotate clockwise through the connecting rod, and the opening and closing position is indicated.
In this embodiment, the auxiliary mechanism 2 further includes a fuse trip rod 21, a fuse trip link 22 and a second microswitch 25, the fuse trip link 22 is disposed on the box body and receives a fusing mechanical action of the fuse; the fuse tripping rod 21 is hinged with the fuse tripping connecting rod 22, and the second microswitch 25 is arranged beside the fuse tripping rod 21 and is in matched contact with the fuse tripping rod 21; the second microswitch 25 is electrically connected to the control unit. When the fuse is fused, the fuse tripping connecting rod 22 is used for receiving a fusing mechanical signal from the fuse and transmitting the fusing mechanical signal to the fuse tripping rod 21, and the second microswitch 25 provides a brake-separating signal for the control unit after receiving an action signal of the fusing tripping rod 21.
In this embodiment, the auxiliary mechanism 2 further includes an opening and closing button 4, the opening and closing button 4 is disposed on a panel of the combined electrical apparatus, and the opening and closing button 4 is electrically connected to the control unit. In the actual use process, the switching-on and switching-off signals can be directly sent to the control unit through the switching-on and switching-off button 4, and switching-on and switching-off actions are achieved.
In this embodiment, the box of load switch-fuse combined electrical apparatus is fixed on a chassis truck, be equipped with the interlocking plate that can shutting the chassis truck business turn over on the chassis truck, the interlocking plate stretches into the bottom half through the box bottom plate, the upper end of the first bent plate of lower extreme fixed connection of first even board, the lower extreme of first bent plate is buckled the back and is stretched into to setting up in the second bent plate on the box bottom plate to the front end of first bent plate is located the top of interlocking plate, the second bent plate is the arch form, erects in on the box bottom plate. As shown in fig. 4, during the switching-on operation, the first connecting plate 26 drives the first bending plate 27 to move forward, enter the groove of the second bending plate 28, and push against the interlocking plate of the chassis truck, so that the chassis cannot be swung in or out, and the anti-misoperation function of preventing the handcart from being pulled out with load of the switch cabinet is realized; during the opening operation, the first connecting plate 26 drives the first bent plate 27 to move backwards and leave the notch of the second bent plate 28, and the interlocking plate of the chassis truck is released, so that the chassis can be swung in or out.
In this embodiment, the bistable permanent magnet operating mechanism 1 is composed of a movable guide rod 10, an end cover, a movable iron core, a closing coil, a magnetizer, a magnetic yoke and an opening coil, the movable guide rod 10 is connected with an insulating pull rod, and the insulating pull rod is connected with a movable contact of a corresponding arc extinguish chamber; the end cover is fixedly connected with the magnetic yoke in a screw mode; the closing coil, the magnetizer and the opening coil are sequentially arranged from front to back by taking the movable iron core as an axis.
In this embodiment, the controller further includes an energy storage capacitor electrically connected to the control unit; and the closing coil and the opening coil are electrically connected with the control unit. The movable guide rod 10 is connected with the insulating pull rod; the end cover and the magnetic yoke are fixed in a screw mode and the like, a magnetic field channel is provided, and integral support is provided; the closing coil, the magnetizer and the opening coil are sequentially discharged from front to back by taking the movable iron core as an axis; a small opening is formed in the position, close to the coil, of the magnetic yoke, and the closing coil and the opening coil are connected with the control unit; the movable iron core is preferably made of electrician pure iron, and longitudinal notches are formed in the periphery of the movable iron core, so that eddy current can be reduced; the permanent magnet adopts a rare earth neodymium iron boron permanent magnet, and provides a holding force for the opening and closing positions; when the brake is switched off, the control unit controls the energy storage capacitor to electrify the brake switching coil, and the electromagnetic force drives the movable iron core to move backwards; when the switch is switched on, the control unit controls the energy storage capacitor to electrify the switch-on coil, and the electromagnetic force drives the movable iron core to move forwards.
In this embodiment, the first connecting plate 26 is fixedly connected to the movable guide rod 10 of the bistable permanent magnetic operating mechanism 1. The first connecting plate 26 is connected with the permanent magnet operating mechanism, receives an action signal of the permanent magnet operating mechanism, and closes and opens the brake through the closing and opening indicating crank arm 29.
In this embodiment, the auxiliary mechanism 2 further includes a manual brake separating rod 3 rotatably disposed on the side plate of the box body, and the manual brake separating rod 3 is engaged and abutted with the first connecting plate 26. The manual brake-separating rod 3 is rotated clockwise through the special brake-separating rod, so that the first connecting plate 26 moves backwards, the movable iron core of the permanent magnet operating mechanism is driven to move backwards, and the combined electrical appliance is separated.
The invention also provides a control method of the permanent magnet operating mechanism of the load switch-fuse combined electrical apparatus, which comprises the following steps:
the three bistable permanent magnet operating mechanisms 1 are correspondingly arranged on the box body and are respectively matched with the load switch arc extinguish chambers 6 of corresponding phases through an insulating pull rod to realize the switching-on and switching-off operations of the combined electrical apparatus, when the bistable permanent magnet operating mechanisms 1 drive the load switch arc extinguish chambers 6 to switch on and switch off, the movable guide rod 10 of the bistable permanent magnet operating mechanisms 1 drives the first connecting plate 26 to act, the proximity switch 23 receives an action signal of the first connecting plate 26, sends the action signal to the control unit, provides a switching-on and switching-off position signal for the control unit, and indicates the switching-on and switching-off positions of the combined electrical apparatus through the switching-on and switching-off indication connecting lever 29; the first microswitch 24 receives the action signal of the first connecting plate 26 at the same time and provides a switching-on/off position signal for the switch cabinet. When one phase of fuse 5 is fused due to overload current, the striker of the fuse 5 rushes out to drive the fuse tripping connecting rod 22 to move downwards, the second microswitch 25 is switched through the fuse tripping rod 21, the second microswitch 25 sends a closing signal to the control unit, the control unit receives the signal to supply power to the opening coil of the three-phase bistable permanent magnetic operating mechanism 1, and the three-phase bistable permanent magnetic mechanism 1 drives the three-phase arc extinguish chamber to open the switch simultaneously.
And a switching-on/off button 4 can be arranged on the panel of the combined electrical appliance, and a switching-on/off command is sent to the control unit through the switching-on/off button 4 to perform switching-on/off operation on the combined electrical appliance.
In summary, the permanent magnet operating mechanism of the load switch-fuse combined electrical apparatus and the control method thereof provided by the invention have the advantages of simple structure and reliable operation.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A permanent magnet operating mechanism of a load switch-fuse combined electrical appliance, the load switch-fuse combined electrical appliance is accommodated in a box body, and the permanent magnet operating mechanism is characterized in that: the permanent magnet operating mechanism comprises three bistable permanent magnet operating mechanisms arranged on the box body, the three bistable permanent magnet operating mechanisms are respectively connected with three phases of the load switch, and each bistable permanent magnet operating mechanism is respectively matched with an arc extinguish chamber of the load switch through an insulating pull rod to realize switching on and switching off; the three bistable permanent magnet operating mechanisms are controlled by a control unit; the auxiliary mechanism comprises two side plates matched with the box body, and a proximity switch, a first microswitch, a switching-on/off indicating crank arm and a first connecting plate which are arranged on the two side plates, wherein the first connecting plate is used for receiving action information of the bistable permanent magnet operating mechanism and is matched and connected with the bistable permanent magnet operating mechanism, the first connecting plate is connected with the switching-on/off indicating crank arm through a connecting rod, and the switching-on/off indicating crank arm is rotatably arranged on one side plate and is hinged with the connecting rod; the proximity switch is arranged beside the first connecting plate, the first microswitch is arranged in front of the first connecting plate, the proximity switch is electrically connected with the control unit, and the first microswitch is electrically connected with a controller of the switch cabinet; the auxiliary mechanism also comprises a fuse tripping rod, a fuse tripping connecting rod and a second microswitch, wherein the fuse tripping connecting rod is arranged on the box body and receives the fusing mechanical action of the fuse; the fuse tripping rod is hinged with the fuse tripping connecting rod, and the second microswitch is arranged beside the fuse tripping rod and is in matched contact with the fuse tripping rod; the second microswitch is electrically connected with the control unit;
the control method comprises the following steps:
the three bistable permanent magnet operating mechanisms are correspondingly arranged on the box body, and are respectively matched with the load switch arc extinguish chambers of corresponding phases through an insulating pull rod to realize the switching-on and switching-off operation of the combined electrical appliance; the first microswitch receives the action signal of the first connecting plate at the same time and provides a switching-on/off position signal for the switch cabinet; when one phase fuse is fused due to overload current, the striker of the fuse rushes out to drive the fuse tripping connecting rod to move downwards, the second microswitch is switched through the fuse tripping rod and sends a closing signal to the control unit, the control unit receives the signal to supply power to the opening coil of the three-phase permanent magnet operating mechanism, and the three-phase permanent magnet mechanism drives the three-phase arc extinguish chamber to open the switch simultaneously.
2. The permanent magnet actuator of a load switch-fuse combination according to claim 1, wherein: the auxiliary mechanism further comprises an opening and closing button, the opening and closing button is arranged on a panel of the combined electrical appliance, and the opening and closing button is electrically connected with the control unit.
3. The permanent magnet actuator of a load switch-fuse combination according to claim 1, wherein: the box is fixed on a chassis truck, be equipped with the interlocking plate that can shutting chassis truck business turn over on the chassis truck, the interlocking plate stretches into the bottom half through the box bottom plate, the upper end of a first bent plate of lower extreme fixed connection of first even board, the lower extreme of first bent plate is buckled the back and is stretched into to setting up in the second bent plate on the box bottom plate, the front end of first bent plate put in the top of interlocking plate, the second bent plate is the arch shape, erects in on the box bottom plate.
4. The permanent magnet actuator of a load switch-fuse combination according to claim 1, wherein: the bistable permanent magnet operating mechanism consists of a movable guide rod, an end cover, a movable iron core, a closing coil, a magnetizer, a magnet yoke and a separating coil, wherein the movable guide rod is connected with an insulating pull rod, and the insulating pull rod is connected with a movable contact of the corresponding arc extinguish chamber; the end cover is fixedly connected with the magnetic yoke in a screw mode; the closing coil, the magnetizer and the opening coil are sequentially arranged from front to back by taking the movable iron core as an axis.
5. The permanent magnet actuator of a load switch-fuse combination according to claim 4, wherein: the energy storage capacitor is electrically connected with the control unit; and the closing coil and the opening coil are electrically connected with the control unit.
6. The permanent magnet actuator of a load switch-fuse combination according to claim 4, wherein: the first connecting plate is fixedly connected with a movable guide rod of the bistable permanent magnet operating mechanism.
7. The permanent magnet actuator of a load switch-fuse combination according to claim 1, wherein: the auxiliary mechanism further comprises a manual brake separating rod which is rotatably arranged on the side plate, and the manual brake separating rod is matched and abutted with the first connecting plate.
8. The method of claim 1, wherein the method further comprises the steps of: and a switching-on/off button is arranged on the panel of the combined electrical appliance, and a switching-on/off command is sent to the control unit through the switching-on/off button to perform switching-on/off operation on the combined electrical appliance.
CN201710877698.9A 2017-09-26 2017-09-26 Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof Active CN107464722B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710877698.9A CN107464722B (en) 2017-09-26 2017-09-26 Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710877698.9A CN107464722B (en) 2017-09-26 2017-09-26 Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof

Publications (2)

Publication Number Publication Date
CN107464722A CN107464722A (en) 2017-12-12
CN107464722B true CN107464722B (en) 2020-03-17

Family

ID=60552945

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710877698.9A Active CN107464722B (en) 2017-09-26 2017-09-26 Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof

Country Status (1)

Country Link
CN (1) CN107464722B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201278328Y (en) * 2008-07-24 2009-07-22 厦门华电开关有限公司 A vacuum contactor
CN104377584A (en) * 2014-11-21 2015-02-25 国家电网公司 Solid insulation combination switchgear
CN205092184U (en) * 2015-11-10 2016-03-16 江苏互邦变压器制造有限公司 Oily formula combined load switch
CN106373823A (en) * 2016-12-07 2017-02-01 协成科技股份有限公司 Load switch-fuse combined electric appliance
CN207367865U (en) * 2017-09-26 2018-05-15 国家电网公司 The permanent-magnet manipulating mechanism of switch-fuse combination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201278328Y (en) * 2008-07-24 2009-07-22 厦门华电开关有限公司 A vacuum contactor
CN104377584A (en) * 2014-11-21 2015-02-25 国家电网公司 Solid insulation combination switchgear
CN205092184U (en) * 2015-11-10 2016-03-16 江苏互邦变压器制造有限公司 Oily formula combined load switch
CN106373823A (en) * 2016-12-07 2017-02-01 协成科技股份有限公司 Load switch-fuse combined electric appliance
CN207367865U (en) * 2017-09-26 2018-05-15 国家电网公司 The permanent-magnet manipulating mechanism of switch-fuse combination

Also Published As

Publication number Publication date
CN107464722A (en) 2017-12-12

Similar Documents

Publication Publication Date Title
CN2779587Y (en) A/C high voltage vacuum breaker
CN201022062Y (en) Remote control high voltage separation switch
CN201893278U (en) Circuit switch device in cable branch box and ring network cabinet
CN201478216U (en) Quick control mechanism of permanent-magnetic circuit breaker
CN104715964A (en) Monopole vacuum circuit breaker
CN205069492U (en) Outdoor permanent magnetism vacuum circuit breaker
CN2914304Y (en) Permanent magnetism intelligent mechanism low-voltage vacuum breaker
CN201732720U (en) Permanent-magnet high-voltage vacuum circuit breaker
CN104183417A (en) Insulation type combined high-voltage change-over switch with short switching time
CN107464722B (en) Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof
CN202034297U (en) Outdoor high-pressure permanent-magnet vacuum circuit breaker
CN201112263Y (en) High voltage vacuum breaker
CN201741623U (en) Outdoor high-voltage intelligent permanent magnetic vacuum switch
CN207367865U (en) The permanent-magnet manipulating mechanism of switch-fuse combination
CN205542572U (en) Outdoor permanent magnetism high pressure vacuum circuit breaker of 12kV
CN205487932U (en) Outdoor interchange high pressure permanent magnetism vacuum circuit breaker
CN212411934U (en) Electric isolation high-voltage permanent magnet vacuum circuit breaker
CN101814393A (en) Vacuum contactor with mixed magnetic field
JP4357505B2 (en) Breaker
CN104201046A (en) Combined high-voltage change-over switch with short switching time
CN213277925U (en) Gas insulation looped netowrk cabinet with load switch unit
CN202487491U (en) Intelligent low-voltage vacuum circuit breaker for permanent-magnet mechanism
CN215342420U (en) Quick vacuum circuit breaker aerifys cabinet based on permanent magnetic mechanism
CN209880432U (en) Isolating reversing switch
CN212991018U (en) Low-voltage ultra-fast bistable permanent-magnet circuit breaker

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant