CN202332626U - Ring main unit fastening device - Google Patents
Ring main unit fastening device Download PDFInfo
- Publication number
- CN202332626U CN202332626U CN2011202762247U CN201120276224U CN202332626U CN 202332626 U CN202332626 U CN 202332626U CN 2011202762247 U CN2011202762247 U CN 2011202762247U CN 201120276224 U CN201120276224 U CN 201120276224U CN 202332626 U CN202332626 U CN 202332626U
- Authority
- CN
- China
- Prior art keywords
- electric control
- control lock
- main unit
- ring main
- locking device
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a ring main unit fastening device, which belongs to the technical field of power equipment. The device can overcome the shortcomings of the existing ring main unit fastening device and is necessary to configure a locking device power source for each high-tension switch cabinet. The ring main unit fastening device comprises a fastening device capable of being installed on a ring main unit, wherein a signal of a detector is switched in the fastening device; the fastening device comprises an electric control lock; the ring main unit fastening device comprises a power module; the power module comprises a direct-current power source; the power module is matched with the fastening device in use; the power module is connected with the fastening device by a plug-in module; the ring main unit further comprises an electricity testing circuit capable of being arranged in the fastening device and the power module; the electricity testing circuit detects the signal from the detector; the electric control lock is not unlocked when the detection result shows that high voltage exists, otherwise, the electricity testing circuit drives the electric control lock to be unlocked.
Description
Technical field
The utility model belongs to electrical equipment technical field, specifically relates to a kind of ring main unit locking device.
Background technology
Outdoor looped network is refused simple and reliable, in the urban electricity supply network, uses in a large number.Outdoor looped network is refused the ring main unit locking device of machinery, refuses under the enterprising lines spare of power supply at looped network, and this ring main unit locking device can prevent chargedly to close the ground cutter, charged opening misoperation such as refused and taken place.Because the hand-in-hand network connection mode of ring network power supply, looped network refuses to exist the situation of inlet wire under the power supply, the mechanical ring main unit locking device that this moment, looped network was refused itself just can not prevent charged close cutter, charged generation of opening pernicious misoperations such as refusing.To this situation, one of solution route is to adopt high-voltage electriferous display locking device, detects the electrification in high voltage situation through detector, allows to open electric control lock according to having or not high pressure to determine whether.High-voltage electriferous display locking device needs working power, and the working power of present most of high voltage display device adopts the 220V power of alterating and direct current, and the scheme of the secondary 100V power supply that adopts voltage transformer is also arranged.
Summary of the invention
The purpose of the utility model provides a kind of ring main unit locking device, and this device can overcome the deficiency of present ring main unit locking device, needn't the locking device working power be set for each high-tension switch cabinet.
In order to achieve the above object, the technical scheme of the utility model is: the ring main unit locking device comprises locking device, and locking device can be installed on the ring main unit, and the signal of detector inserts locking device, comprises electric control lock in the locking device; Comprise power module, comprise DC power supply in the power module, be connected through plug-in unit between power module and the locking device; Comprise electrical circuit inspection, electrical circuit inspection can be arranged in locking device and the power module; Electrical circuit inspection detects the signal from detector, and testing result is not release of electric control lock when high pressure is arranged, and testing result is the release of electrical circuit inspection driving electric control lock during for no high pressure.
Locking device comprises switch hole, can carry out the operation that switch is refused through switch hole; Electric control lock comprises shielding plate, but shielding plate translation or rotation are blocked or exposed switch hole; Electric control lock comprises electromagnet, and electromagnet can drive cover plate translation or rotation; During the electric control lock locking, shielding plate blocks switch hole; After the electric control lock release, shielding plate is removed and is no longer blocked switch hole.Electric control lock also comprises drop in leaf, and drop in leaf can rotate around the axis; When the electric control lock locking, shielding plate blocks the part of switch hole, and shielding plate also withstands drop in leaf, and shielding plate and drop in leaf block switch hole jointly; After the electric control lock release, shielding plate is removed and is no longer blocked switch hole, and drop in leaf also can freely stir around the shaft, and switch hole is in operable state.Drop in leaf has a forward position, and when the electric control lock locking, the forward position keeps off in the upper edge of shielding plate, avoids artificially shielding plate being moved on to unlocked position.Locking device comprises switch hole, can carry out the operation that switch is refused through switch hole; Electric control lock comprises shielding plate, but shielding plate translation or rotation, thus realize blocking or exposing said switch hole; Electric control lock comprises block, but link stopper translation or rotation; But block locking or unclamp cover plate; Electric control lock comprises an electromagnet, and electromagnet can drive link stopper translation or rotation; During the electric control lock locking, shielding plate blocks switch hole, block locking shielding plate; After the electric control lock release, link stopper unclamps shielding plate, but the shielding plate people is translation or rotation, can make shielding plate no longer block said switch hole.Electric control lock comprises a block, but block translation or rotation; But block locking or unclamp the door lock of ring main unit; Electric control lock comprises an electromagnet, and electromagnet can drive block translation or rotation; During the electric control lock locking, the door lock of block locking ring main unit; After the electric control lock release, link stopper unclamps, but the door lock people of ring main unit is for opening.Electric control lock comprises a block, the removable or rotation of block; But link stopper locking or unclamp the door of refusing that high-voltage switch gear refuses; Electric control lock comprises an electromagnet, and electromagnet can drive link stopper translation or rotation; During the electric control lock locking, the cabinet door of link stopper locking high-tension switch cabinet; After the electric control lock release, block unclamps, but ring main unit refuse the door people for opening.Electromagnet is a bistable electro-magnet, and high voltage testing electric circuit inspection result is during for no high pressure, and high voltage testing drives bistable electro-magnet moves, the electric control lock release.Electric control lock comprises electric contact, and electric contact is serially connected between electrical circuit inspection and the bistable electro-magnet, and this electric contact breaks off with the bistable electro-magnet action, i.e. no longer power consumption after the action of assurance bistable electro-magnet.Electrical circuit inspection comprises a regularly power-on circuit, and regularly power-on circuit is connected in short-term to bistable electro-magnet and switched on when carrying out the electric control lock unlock command.
Electric control lock also comprises a locking component, and after power module and locking device were in inserting state, if said electric control lock release, locking component made power module and locking device keep inserting state not separate; After electric control lock resetted, locking component resetted thereupon, and power module and locking device can separate.The ring main unit locking device also comprises push-button switch, is connected on DC power supply on the circuit of electrical circuit inspection power supply by thick switch series.DC power supply is rechargeable battery or dry cell.The ring main unit locking device also comprises charged display circuit, and charged display circuit detects the signal of detector, shows the electrification in high voltage situation.
The beneficial effect that the utility model reaches is:
1, adopts the ring main unit locking device of locking device and power module compound mode, do not have the looped network of low-tension supply to refuse the powerup issue of ring main unit locking device near having solved.Electric control lock adopts bistable electro-magnet, and power consumption is extremely low, and rechargeable battery fills once electricity or changes one group of dry cell and can accomplish unlocking operation hundreds of times.
2, electrical verification and release are once accomplished.Power module only need click switch with after locking device is connected, and can accomplish electrical verification and release, and is easy and simple to handle.
3, considered the reset issues behind the unlocking operation, after maintenance finished, if device is not resetted (locking), power module just can't be taken off, and avoids staying potential safety hazard.
4, the mode that locking device adopts electrification in high voltage to show and electrification in high voltage detection locking two cover systems work alone can be observed high-voltage charge display device earlier and confirmed no high pressure, detects the locking device release through electrification in high voltage again, thereby has further improved fail safe.
5, applied range.Because the ring main unit locking device reliable operation of the utility model is easy to use, be not suitable for the occasion that looped network such as refuses at the reliable low-tension supply of difficult acquisition, also can be used on other various high voltage testing locking places that need; Also can be used on the equipment of existing mechanical interlocking device in case of necessity, with further raising fail safe.
Description of drawings
Fig. 1, ring main unit locking device principle schematic.
The locking device operation principle sketch map of Fig. 2, belt switch hole and shielding plate.
The locking device operation principle sketch map of Fig. 3, belt switch hole, cover plate and drop in leaf.
The locking device sketch map of Fig. 4, belt switch hole, rotatable shielding plate and cover plate latch mechanism.
The locking device sketch map of Fig. 5, belt switch hole, removable shielding plate and cover plate latch mechanism.
Fig. 6, ring main unit door lock locking device sketch map.
Fig. 7, ring main unit are refused the door latch apparatus sketch map.
Bayonet fitting parts and electric contact operation principle sketch map between Fig. 8, locking device and the power module.
Fig. 9, have high-tension electricity electricity display circuit, the principle schematic of the anti-misoperation locking device of power-on circuit and push-button switch regularly.
One of Figure 10, embodiment.
Two of Figure 11, embodiment.
Embodiment
More elaborate the structural representation of the utility model below in conjunction with accompanying drawing.
Fig. 1 is the anti-misoperation locking assembling device principle schematic of the utility model; Error-preventing locking mechanism comprises locking device 1 and power module 2, and locking device 1 comprises electric control lock 5, and power module 2 comprises DC power supply 6; Electrical circuit inspection 4 is arranged in locking device 1 and power module 2.DC power supply 6 is to electrical circuit inspection 4 power supply, is connected by connector 7 between power module 2 and the locking device 1.Electrical circuit inspection 4 detects the signal of detectors 3, and testing result does not drive electric control lock 5 releases when high pressure is arranged; Testing result is 5 releases of driving electric control lock during for no high pressure.Fig. 2 is the belt switch hole of the utility model and the locking device operation principle sketch map of cover plate; The ring main unit locking device comprises a switch hole 8, can carry out the operation that switch is refused through switch hole 8, for example closes operations such as ground cutter; Electromagnet 10 in the electric control lock 5 drives a shielding plate 9.During locking, 9 grades of shielding plates stop the operation that switch is refused in switch hole 8 back; During release, cover plate 9 is removed and is no longer blocked switch hole 8, at this moment allows the operation that switch is refused.Fig. 3 is the locking device operation principle sketch map of belt switch hole, shielding plate and the drop in leaf of the utility model; The ring main unit locking device comprises a switch hole 8, can carry out the operation that switch is refused through switch hole 8; Electromagnet 10 in the electric control lock 5 drives a shielding plate 9, and the top of switch hole 8 also has a drop in leaf 11, and drop in leaf 11 can 12 rotate around the shaft.During electric control lock 5 lockings, shielding plate 9 blocks the part of switch hole 8, and shielding plate 9 withstands drop in leaf 11, and drop in leaf 11 can not be rotated, and at this moment, cover plate 9 blocks switch hole 8 jointly with drop in leaf 11; After electric control lock 5 releases, electromagnet 10 drive cover plates 9 are removed and are no longer blocked switch hole 8, and at this moment drop in leaf n can 12 freely stir around the shaft, and switch hole 8 is in operable state.Drop in leaf 11 has a forward position 13, and when electric control lock 5 lockings, 13 grades in this forward position is avoided artificially shielding plate 9 being moved on to unlocked position in the upper edge of shielding plate 9, can avoid the generation of violation operation.Fig. 4 is the locking device sketch map of the belt switch hole of the utility model, rotatable shielding plate and shielding plate lockable mechanism; A switch hole 8 is arranged on the ring main unit locking device, on the rotatable cover plate 9 switch hole 8 is arranged also, two switch holes 8 are overlapped through rotating cover plate 9; After two switch holes overlap, can carry out the operation of switch cubicle; Electromagnet 10 in the electric control lock 5 drives a link stopper I4, but this link stopper 14 lockings or unclamp cover plate 9; During locking,, the switch hole 8 on the cover plate 9 do not overlap with handle hole 8 on the device, block I4 locking cover plate 9, cover plate 9 can not artificially rotate; During release, when link stopper 14 unclamped shielding plate 9, shielding plate can artificially rotate, and rotatable shielding plate overlaps two switch holes.Fig. 5 is the locking device sketch map of the belt switch hole of the utility model, removable shielding plate and shielding plate lockable mechanism; A switch hole 8 and a removable cover plate 9 are arranged on the ring main unit locking device, and electromagnet in the electric control lock 5 10 drives a block 14, but this link stopper 14 lockings or unclamp removable cover plate 9; During locking, removable catch 9 retainings are in the back of switch hole 8, and block 10 pins cover plate 9 and can not move; After the release, but shielding plate 9 people move to the position of not blocking switch hole 8.Fig. 6 is the ring main unit door lock locking device sketch map of the utility model; On the door lock lock shaft is skilful baffle plate I6 is arranged, baffle plate 16 is used to limit refuses opening of door; Electromagnet 10 in the electric control lock 5 drives a link stopper 14; During locking, baffle plate 16 pins refuses door, and link stopper 14 pins lock shafts 15, can not rotate lock shaft 15 and open and refuse door; During release, link stopper 14 withdrawal can artificially be rotated lock shaft 15 and can be opened and refuse door.Adopt the structure of Fig. 4, Fig. 5, Fig. 6, can reduce the stroke of bistable electro-magnet, thereby reduce the volume and the power consumption of device.Fig. 7 is that the ring main unit of the utility model is refused the door latch apparatus sketch map; Electromagnet 10 in the electric control lock 5 drives a link stopper 14; Block 14 stretches out then to pin refuses door, and link stopper 11 withdrawals then can be opened and refused door.
Bayonet fitting parts and electric contact operation principle sketch map between Fig. 8 locking device and the power module; Comprise bistable electro-magnet 17 in the locking device 1, power module 2 is connected with locking device 1 through plug-in unit 7.Also comprise a locking component 20 in locking device 1 and the power module 2, after being in inserting state between locking device 1 and the power module 2, as if electric control lock 5 releases, locking component 20 will make locking device 1 and power module 2 be in inserting state can not to separate; After electric control lock 5 resetted (locking), locking component 20 resetted thereupon, and locking device 1 could separate with power module 2.Electric control lock 5 also comprises an electric contact 18; Electric contact 18 can be serially connected between electrical circuit inspection 4 and the bistable electro-magnet 17; This electric contact breaks off with bistable electro-magnet 17 actions; After making bistable electro-magnet 17 actions, electric contact 18 breaks off thereupon, and electrical circuit inspection 4 is no longer supplied power to bistable electro-magnet immediately.
Fig. 9 is the principle schematic that has the electrification in high voltage display circuit and the ring main unit locking device of timing power-on circuit of the utility model; Electrical circuit inspection 4 comprises a regularly power-on circuit 19, and regularly power-on circuit 19 is connected bistable electro-magnet 17 in short-term when carrying out bistable electro-magnet 17 unlock commands, makes bistable electro-magnet 17 action of switch in short-term, subsequently with regard to no longer power consumption.Charged display circuit 22 detects the signal of detector 3; Show the electrification in high voltage situation; The induced electricity of charged display circuit detector 3 capable of using is as power supply; Also can luminously show without 6 power supplies of the DC power supply of power module 1, can be before unlocking operation the charged situation of first facilities for observation, be that operation increases a basis for estimation.On the circuit of electrical circuit inspection 4 power supplies, a push-button switch 21 is arranged at DC power supply 6, press when push-button switch 21, the ring main unit locking device is just started working, and does not work at ordinary times, can reduce power consumption like this.
Figure 10 is one of the embodiment of the ring main unit locking device of the utility model, and its course of work brief introduction is following: electrical circuit inspection 4 and electric control lock 5 are arranged in the locking device 1, DC power supply 6 is arranged in the power module 2; Detector 3 signals insert electrical circuit inspection 4, and electrical circuit inspection 4 detects and demonstration electrification in high voltage situation.Locking device 1 is connected through plug-in unit 7 with power module 2, also has a locking component 20 also together to peg graft between the two.Under electric control lock locking situation, shielding plate 9 upwards withstands drop in leaf 11, and cover plate 9 blocks switch hole 8 jointly with drop in leaf 11, and this moment can't be through the operation of switch hole 8 enforcements to ring main unit.When electrical circuit inspection 4 work, detect the electrification in high voltage situation, testing result does not then drive bistable electro-magnet 17 actions for high pressure is arranged, and keeps blocking; If testing result is no high pressure; Then drive bistable electro-magnet 17 actions; Shielding plate 9 glides and no longer blocks switch hole 8, and drop in leaf n can freely overturn, the operation that can refuse high-voltage switch gear through switch hole 8 enforcements at this moment; The action of bistable electro-magnet simultaneously can make locking component 16 locked, and locking device 1 can not separate with power module 2.Completion can upwards push away the push rod 23 that resets after the work on the ring main unit, bistable electro-magnet 17 is resetted, and electric control lock 5 recovers lockings, removes the locking state of locking component 20 simultaneously, can separate between locking device 1 and the power module 2.
Figure 11 be the utility model the ring main unit locking device embodiment two, its course of work brief introduction is following: charged display circuit 22, electric control lock 5 are arranged in the subject mechanism, electrical circuit inspection 4 and DC power supply 6 are arranged in the power module 2; Detector 3 signals insert locking device 1, send charged display circuit 22; Locking device 1 is connected with cable 24 through plug-in unit 7 with power module 2.Also have a locking component 20 also together to peg graft between the two.Through plug-in unit 7 detector signal is inserted the electrical circuit inspection 4 in the power module, electrical circuit inspection 4 detects the electrification in high voltage situation; Simultaneously through the output drive signal access bistable electro-magnet 17 of plug-in unit 7 with electrical circuit inspection 4.Under electric control lock locking situation, shielding plate 9 upwards withstands drop in leaf 11, and cover plate 9 blocks switch hole 8 jointly with drop in leaf 11, and this moment can't be through the operation of switch hole 8 enforcements to ring main unit.When electrical circuit inspection 4 work, detect the electrification in high voltage situation, testing result does not then drive bistable electro-magnet 17 actions for high pressure is arranged, and keeps blocking; If testing result is no high pressure; Then drive bistable electro-magnet 17 actions; Shielding plate 9 glides and no longer blocks switch hole 8, and drop in leaf 11 can freely overturn, and this moment can be through the operation of switch hole 8 enforcements to ring main unit; The action of bistable electro-magnet simultaneously can make locking component 16 locked, and locking device 1 can not separate with power module 2.Completion can upwards push away the push rod 23 that resets after the work on the ring main unit, bistable electro-magnet 17 is resetted, and electric control lock 5 recovers lockings, removes the locking state of locking component 20 simultaneously, can separate between locking device 1 and the power module 2.
Power module 2 can be carried by operating personnel, and a power module 2 can be common to all ring main units that same model ring main unit locking device is installed and carry out the electrical verification release.Need refuse operation to certain switch, the locking device 1 that power module 2 and respective switch are refused is pegged graft, can carry out high voltage testing and unlocking operation.
The ring main unit locking device of the utility model can reach following effect: the cited implementation of presents is nonrestrictive; To one skilled in the art; Actual device can carry out various improvement and variation; So long as use power module to cooperate with locking device, power module is supplied power to locking device through inserting mode, thereby the method that realizes integrated electrical verification and release all is the protection range of the utility model.
Claims (7)
1. ring main unit locking device, it is characterized in that: comprise locking device, locking device can be installed on the ring main unit, and the signal of detector inserts locking device, comprises electric control lock in the locking device; Comprise power module, comprise DC power supply in the power module, be connected through plug-in unit between power module and the locking device; Comprise electrical circuit inspection, electrical circuit inspection can be arranged in locking device and the power module; Electrical circuit inspection detects the signal from detector, and testing result is not release of electric control lock when high pressure is arranged, and testing result is the release of electrical circuit inspection driving electric control lock during for no high pressure.
2. according to the said ring main unit locking device of claim 1, it is characterized in that: locking device comprises switch hole, can carry out the operation that switch is refused through switch hole; Electric control lock comprises shielding plate, but shielding plate translation or rotation are blocked or exposed switch hole; Electric control lock comprises electromagnet, and electromagnet can drive shielding plate translation or rotation; During the electric control lock locking, shielding plate blocks switch hole; After the electric control lock release, shielding plate is removed and is no longer blocked switch hole.
3. according to the said ring main unit locking device of claim 2, it is characterized in that: electric control lock also comprises drop in leaf, and drop in leaf can rotate around the axis; When the electric control lock locking, shielding plate blocks the part of switch hole, and shielding plate also withstands drop in leaf, and cover plate and drop in leaf block switch hole jointly; After the electric control lock release, shielding plate is removed and is no longer blocked switch hole, and drop in leaf also can freely stir around the shaft, and switch hole is in operable state.
4. according to the said ring main unit locking device of claim 3, it is characterized in that: drop in leaf has a forward position, and when the electric control lock locking, the forward position keeps off in the upper edge of shielding plate, avoids artificially cover plate being moved on to unlocked position.
5. according to the said ring main unit locking device of claim 1, it is characterized in that: locking device comprises switch hole, can carry out the operation that switch is refused through switch hole; Electric control lock comprises shielding plate, but shielding plate translation or rotation, thus realize blocking or exposing said switch hole; Electric control lock comprises block, but link stopper translation or rotation; But block locking or unclamp cover plate; Electric control lock comprises an electromagnet, the translation of driven link stopper or the rotation of electromagnet; During the electric control lock locking, shielding plate blocks switch hole, block locking shielding plate; After the electric control lock release, block unclamps shielding plate, but the shielding plate people is translation or rotation, can make shielding plate no longer block said switch hole.
6. according to the said ring main unit locking device of claim 1, it is characterized in that: electric control lock comprises a block, but link stopper translation or rotation; But block locking or unclamp the door lock of ring main unit; Electric control lock comprises an electromagnet, and electromagnet can drive block translation or rotation; During the electric control lock locking, the door lock of link stopper locking ring main unit; After the electric control lock release, link stopper unclamps, but the door lock people of ring main unit is for opening.
7. according to the said ring main unit locking device of claim 1, it is characterized in that: electric control lock comprises a link stopper, the removable or rotation of link stopper; But block locking or unclamp the door of refusing of ring main unit; When electric control lock comprised an electromagnet (1), electromagnet (10) can drive link stopper translation or rotation; During the electric control lock locking, block locking ring main unit refuse door; After the electric control lock release, link stopper unclamps, but ring main unit refuse the door people for opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202762247U CN202332626U (en) | 2011-08-01 | 2011-08-01 | Ring main unit fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202762247U CN202332626U (en) | 2011-08-01 | 2011-08-01 | Ring main unit fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202332626U true CN202332626U (en) | 2012-07-11 |
Family
ID=46444598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202762247U Expired - Fee Related CN202332626U (en) | 2011-08-01 | 2011-08-01 | Ring main unit fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202332626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556880A (en) * | 2013-10-31 | 2014-02-05 | 北京微能汇通电力技术有限公司 | Electricity testing unlocking system for high voltage switch cabinet |
-
2011
- 2011-08-01 CN CN2011202762247U patent/CN202332626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556880A (en) * | 2013-10-31 | 2014-02-05 | 北京微能汇通电力技术有限公司 | Electricity testing unlocking system for high voltage switch cabinet |
| CN103556880B (en) * | 2013-10-31 | 2016-05-25 | 北京微能汇通电力技术有限公司 | A kind of high voltage switch cabinet electricity check unlocking system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101867159B (en) | Device for preventing high-voltage switch cabinet from being locked by mistake | |
| CN201387991Y (en) | High-voltage switch cabinet anti-mislock device | |
| CN202059053U (en) | Safety protective lockset of high-voltage electrical switch cabinet | |
| CN105488872B (en) | Switch cubicle anti-misoperation locking device and its method of work | |
| CN103094959A (en) | Portable automatic electric car charging box and arranging and running method thereof | |
| CN204044230U (en) | With the high voltage display device that error proof locking system of microcomputer is supporting | |
| CN204178965U (en) | The safety interlock system of 10kV ring main unit and off-tube Ore-controlling Role | |
| CN202332626U (en) | Ring main unit fastening device | |
| CN104242399B (en) | In three-dimensional parking device, the charging of electric automobile connects detection and charge metering device | |
| CN101246783A (en) | Intelligent locking method of outdoor looped network cabinet wire spacing ground switch | |
| CN204705886U (en) | For the Non-follow control proving installation of reactor core neutron fluence rate system electromechanical equipment | |
| CN206790101U (en) | A kind of ring network power supply anti-misoperation system | |
| CN104078254A (en) | Safety locking device of 10 kV ring main unit and locking control system | |
| CN203588872U (en) | Electricity testing locking device | |
| CN204142829U (en) | General changeable type charge indicating device | |
| CN103269034A (en) | Intelligent on-line anti-error protection system | |
| CN106023748A (en) | Low-voltage metering training device | |
| CN102881491A (en) | Passive forcible locking device | |
| CN106655485A (en) | Fault current cut-off method and device and vacuum load switch cabinet | |
| CN207183119U (en) | Switch cabinet grounding switch electrified locking device | |
| CN203589848U (en) | Handcart-type switch-cabinet intelligent misoperation-preventive lockup system | |
| CN104408795A (en) | Integrated system of intelligent key for power distribution network and method for utilizing integrated system | |
| CN202258890U (en) | Passive enforced lock-out device | |
| CN103985576A (en) | Forced locking-type ground wire pile | |
| CN104832009A (en) | Design scheme of intelligent locking apparatus for center control lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20150801 |
|
| EXPY | Termination of patent right or utility model |