CN207067203U - Maintenance free high voltage isolator - Google Patents
Maintenance free high voltage isolator Download PDFInfo
- Publication number
- CN207067203U CN207067203U CN201720213652.2U CN201720213652U CN207067203U CN 207067203 U CN207067203 U CN 207067203U CN 201720213652 U CN201720213652 U CN 201720213652U CN 207067203 U CN207067203 U CN 207067203U
- Authority
- CN
- China
- Prior art keywords
- core bar
- isolator
- coil
- driving coil
- maintenance free
- 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
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model maintenance free high voltage isolator GLQ is related to high-voltage isolator manufacture and high-voltage isulation detection applied technical field.Isolator includes static contact,Moving contact core bar and core bar driving coil,Insulating coating and accessory kit,Static contact is the porcelain bushing shell at the top of overcoat,Core bar is made up of upper and lower two parts,The first half is insulation core bar,Top is moving contact,Drawn with insulated flexible cord,Lower half is that ferromagnetic core boom end has ferromagnetic disk and small end head,Core bar driving coil is placed in middle part,During the core bar that insulated during coil blackout encloses online,Now dynamic/static contact space length be referred to as isolator security isolation away from,Security isolation of the present utility model is away from for 140mm,Coil sucks ferromagnetic core bar and drives insulation core bar while move up during energization,Dynamic/static contact contacts and connects external circuit,Isolator has core bar in-situ monitoring,Starting interlock,Driving coil quickly starts brownout operation,Coil is from safety measures such as demagnetizations,The application of maintenance free high voltage isolator is advantageous to the development of high pressure detection technique.
Description
Technical field：
The utility model maintenance free high voltage isolator is related to high-voltage isolator manufacture and skill is applied in high-voltage motor insulated detection
Art field.
Background technology：
High-voltage motor will carry out Insulation monitoring before putting into operation, Traditional Man shakes survey insulation, and especially Modern high-pressure switchs
Cabinet is respectively provided with five anti-functions, during Insulation monitoring must strict operation sequence, by scene shake survey one it is high-voltage motor insulated exemplified by, journey
Sequence is：High-voltage board vacuum circuit breaker QF is put into maintenance position-conjunction grounding switch-opening high-voltage board back door-and pulls open grounding switch-detection
Point electrical verification-shake survey insulaion resistance-conjunction grounding switch-closing high-voltage board back door-pulls open grounding switch-circuit breaker Q F and puts running position
Put-put into operation, this process is troublesome, and two persons on duty that are skilled in technique complete this process and also obtained 20~30 minutes, improper operation
The possibility of damage equipment is had, if warm standby will now lose stand-by heat function, changes the effective of this present situation
Measure is to use high-voltage motor insulated detection means, but because critical component-high-voltage isolator in the device is not ideal enough, thus
High-voltage motor insulated detection means fails to implement in full, so necessary provide a kind of highly reliable maintenance free high voltage isolation
Device, but so far there are no example.
Patent No. ZL200520075271.X " a kind of insulating resistance detecting switch for high-voltage motor ", is to apply in person
Section 1 be used for a kind of patent (and isolator) of high-voltage motor insulated detection, though its principle is correct, provide only at that time
Principle schematic, be substantially a kind of horizontal level type structure, it is maximum the shortcomings that can not be applicable all high-tension switch cabinets, can only be inadequate
Loaded on some central cabinet circuit breaker underlying spaces, and will also at the scene switch cubicle punching could be by QF lower ends lead to stationary contact
Head, therefore be not a preferable scheme, practical it can not promote.
Patent No. ZL200620070856.7 " a kind of high voltage isolator for insulation detection of high voltage motor " is to apply in person
Section 2 be used for the patent of high-voltage isulation detection, action principle be to, but only provided simply isolated principle at that time and showed
Be intended to, concrete structure drawing data pole imperfection, some describe it is inconsistent or even wrong, such as：1st, static contact, moving contact
How to be contacted between core bar and driving coil three, what static contact is, is fixed somewhere, how is moving contact
Static contact, the feature of driving coil are directed at, coil is fixed wherein, how fixed, without overcoat (shell) static contact, moving contact
Nowhere take root, can not be installed in switch cubicle with driving coil, safety let alone；2nd, right 2 is " it is characterized in that the stationary contact
Magnet is set on head ", right 3 " it is characterized in that the lower end of the core bar is provided with back-moving spring ", 2,3 two points of right is contradictory mistake
By mistake, and it is unnecessary, that is, it is copper to enable and set magnet but moving contact, must be set below copper moving contact like that ferromagnetic
Body, magnetic force is small not to increase the degree that static-dynamic contact sucks, magnetic force is big will produce coil blackout after moving contact core bar fall not
The serious consequence got off；Similarly back-moving spring is short, and coil electricity core bar, which is not easy suction coil, can influence connecing for static-dynamic contact
Touch, spring has grown core bar and fallen the stability that can also influence dropping place, so right 2 and right 3 are unscientific, and is contradiction
Mistake, in summary, patent above is that some are contemplated at that time in person, does not give careful consideration and causes, so failing to turn into
One product is introduced to the market.
The content of the invention：
The purpose of this utility model：The defects of existing for high-voltage motor insulated detection technique, draw the warp of previous patent
Lesson is tested, original thinking and circle is broken through comprehensively, design is carried out under safe and reliable principle, there is provided a kind of structure
Rationally, low-profile, installed and used suitable for all kinds high-tension switch cabinet, high-voltage motor can be used for and field of high-voltage electrical equipment is exhausted
The long-life non-maintaining high-voltage isolator of edge detection.
The technical solution of the utility model is maintenance free high voltage isolator GLQ, including maintenance free high voltage insulator body and
Prerequisite safety measure when maintenance free high voltage isolator uses in high-voltage motor insulated detection means, maintenance free high voltage every
Include static contact, moving contact core bar and core bar driving coil, insulating coating and accessory kit composition from device body, it is characterized in that exempting from
It is to be screwed to be connected with insulating coating on nylon (9) by porcelain bushing shell (13) to safeguard high-voltage isolator static contact, is led in porcelain bushing shell
Electric bolt lower end head plane is static contact (10), and interior two locking nuts (14) of conducting bolt outer tip end immediately soft lead by high insulation
LineTo segregate high-pressure side, two locking nuts are adjusted as static contact compression spring (11) and moving contact stroke overshoot
Section is used.
The dynamic moving contact core bar and core bar driving coil (7), it is characterized in that moving contact core bar is different by upper and lower two parts
The round bar that material is connected as a single entity, top half are non-magnetic insulation core bars (6), and its top is moving contact (8), connect soft lead of insulating
Line (B), the latter half are ferromagnetic core bar (5), and end is ferromagnetic disk, and disk upper surface applies one layer of non magnetic pad, under disk
Face is small end head.
The maintenance free high voltage isolator GLQ bodies, including core bar driving coil (7), it is characterized in that DC coil, voltage
For DC110~220V, the maximum moving distance of ferromagnetic core bar when the total height of coil is coil electricity, the security isolation of isolator
Away from coil total height is slightly less than, up and down iron yoke surround coil, lower yoke center stay one be less than ferromagnetic core boom end disk it is straight
The breach in footpath.
The maintenance free high voltage isolator GLQ bodies include nylon insulating coating, it is characterized in that by upper and lower two parts (9 Hes
4) form, centre is connected through a screw thread integral insulating coating, has one to be easy to moving contact insulation to draw on upper insulating coating wall
The bar hole that line moves up and down, have isolation by hole away from sign, the outer-diameter threads of upper insulating coating lower port with lower insulating coating
Port matches, and interior pass through is less than core bar driving coil external diameter, is easy to upper and lower insulating coating to press core while being fixedly connected
Bar driving coil, lower insulating coating internal diameter upper semisection are slightly larger than driving coil external diameter, coil is put into wherein, under nylon
The interior warp of insulating coating lower semisection is less than driving coil external diameter, is easy to the support end face as driving coil, in the lower exhausted of coil
There is an aperture to do the extraction of coil line on edge overcoat wall to be used, another hole installation optoelectronic switch, lower insulation on lower insulating coating bottom wall
Jacket bottom termination is fixed on bottom plate by flat head bolt.
The maintenance free high voltage isolator GLQ bodies, which include accessory kit, 10KV class B insulations pillar (16) and monitoring core bar
The optoelectronic switch (3) and connecting terminal block (2) of home state, it is characterized in that 10KV class B insulations pillar is by isolator overcoat
On bottom plate, in the lower insulating coating base wall of optoelectronic switch installation, and ferromagnetic core rod end head is directed at, connecting terminal block shares 11 ends
Son, 2 meet optoelectronic switch SQ, and 2 connect core bar driving coil, and 2 meet switch cubicle vacuum circuit breaker auxiliary normally closed interlock QF, 2
Detection means starter relay normally closed interlock J is met, 1 PE ground connection, 2 are standby, and insulator body the whole series are together mounted on bottom plate,
It is arranged on during use with expansion bolt on high-tension switch cabinet cable room floor.
Prerequisite safety is arranged when the maintenance free high voltage isolator GLQ is applied in high-voltage motor insulated detection means
Apply, including the instruction of isolator core bar in-situ monitoring, starting interlock circuit and maintenance free high voltage isolator GLQ fast starting, decompression
Economical operation and driving coil are from demagnetization circuit, and its feature maintenance free high voltage isolator core bar in-situ monitoring indicates, starting interlock
Circuit, citing is the circuit in the dotted line frame in the high-voltage motor insulated detection AC control circuit accompanying drawing 2 of separate unit, by optoelectronic switch
SQ, auxiliary reclay JS, indicator lamp GHS, YHS and detection button SBQ compositions, time relay KT2 normally closed delay, which disconnects, touches
Head connection optoelectronic switch SQ, the normally closed interlock JS and normally open contact JS of auxiliary reclay, the other end connection of optoelectronic switch are middle
Relay JS, indicator lamp GHS and auxiliary reclay JS and the N-terminal moving contact that miniature breaking 1QF is connected after connecing, normally closed interlock JS's
The other end connection indicator lamp YHS, the YHS other end connection 1QF N-terminal moving contact, normally open contact JS other end connecting detection
Button SBQ.
Prerequisite safety is arranged when the maintenance free high voltage isolator GLQ is used in high-voltage motor insulated detection means
Apply, including isolator core bar driving coil fast starting, decompression economical operation and core bar driving coil from demagnetization circuit, citing
It is circuit in dotted line frame in the high-voltage motor insulated detection DC control circuit accompanying drawing 3 of separate unit, it is characterized in that (+) pole fuse RD1
Other end connection auxiliary reclay normally open contact J, J other end connection isolator GLQ and diode D negative pole, D positive pole
The other end for connecting resistance R2, R2 connects the normally closed interlock Js, Js of the isolator GLQ other end, resistance R1 and auxiliary reclay
Other end connection resistance R1 the other end and auxiliary reclay normally open contact J, J the other end connection fuse RD2, RD2
Another termination power (-) it is extreme.
The utility model maintenance free high voltage isolator GLQ operation principles：When core bar driving coil powers off, first half insulation
Core bar is in coil, the now space in the porcelain bushing shell of top between conducting bolt bottom static contact and insulation core bar top moving contact
Distance claims isolator security isolation away from, security isolation of the present utility model away from for 140mm (10KV levels national standard is 125mm), so
Even if static contact band 10KV high pressures, moving contact isolated by 140mm after and safety, driving coil be powered when lower half it is ferromagnetic
Core bar is inhaled into coil and drives first half insulation core bar together to move up, and static-dynamic contact is connected, and the insulation drawn on moving contact is soft
Wire connects detection external circuit, and most crucial some first half core bars of structural principle are to insulate, and moving contact is on its top, by iron
The transmission of magnetic core bar is connected, as long as core bar driving coil has certain height, with regard to the work that can reach security isolation with connect circuit
With security isolation distance is slightly less than coil height.
The principle of safety measure and effect：
Core bar original position (lowest order) monitoring be the most important most basic requirements of high-voltage isolator GLQ, only core bar in the original location
When just can guarantee that the security isolation of this isolator away from for 140mm, realizes core bar in-situ monitoring, specific monitoring with optoelectronic switch SQ
Circuit is shown in accompanying drawing 3, and the feature of optoelectronic switch is disposed upon on the bottom wall of nylon insulating coating, photometer head alignment core bar small end head,
Relay JS by optoelectronic switch control is acted, and contact relay JS green indicating lamp GHS is bright, represents core bar in the original location, such as
Fruit core bar not in the original location, then connect, and failure yellow indicator lamp YHS is bright, realizes core bar original position lamp by relay Js normally closed interlock
Light indicates that JS is closed when relay JS another normally open contact only has core bar in the original location, because normally open contact JS goes here and there in starting button
SBQ circuits, realize the core bar interlocking in situ with starting；
The realization that core bar stroke, static-dynamic contact stability and core bar reliably fall (see accompanying drawing 1)：Under ferromagnetic core bar
End disc forms closed magnetic path in coil electricity with lower yoke, adds the stability of core bar stroke and static-dynamic contact,
The non magnetic pad of disk upper surface core bar can reliably not fallen in coil blackout by left magnetic effect；
Isolator GLQ fast starting, the economical operation of coil low-temperature-rise and from demagnetization circuit (accompanying drawing 4)：DC control circuit,
Resistance R1 and the normally closed interlock for meeting auxiliary reclay JS, GLQ realize total head fast starting, and moment normally closed interlock JS is opened, GLQ
Coil string resistance R1 realizes decompression low-temperature-rise economical operation；GLQ coils have simultaneously met diode D string resistances R2 from demagnetization circuit,
A discharge path is provided when realizing GLQ coil blackouts, it is big to ensure that front and rear auxiliary reclay normally open contact does not have
Electric arc；
Interlocked between high-voltage isolator GLQ, detection means and switch cubicle vacuum circuit breaker QF：Touched by the way that QF auxiliary is normally closed
Head (accompanying drawing 3), (switch cubicle is not run) just can turn on auxiliary reclay J and isolator GLQ when only QF is powered off, and realize above-mentioned
Safety interlocking between three, ensure that detection means, isolator GLQ is that detection is participated in the state of without high-tension electricity.
The utility model technique effect：
This isolator GLQ design standards are high, rational in infrastructure, external form is small, overcoat all insulation, safety measure are comprehensive, fault rate
It is extremely low, so claiming maintenance free high voltage isolator；
This isolator GLQ maximum feature is that do not only have obvious overlength to safely disconnect distance, can also electric operation control,
It is the high_voltage isolation electrical equipment of an excellent electrical properties, can not only forms high-voltage motor insulated detection means using it, can also open
The new field of high-voltage electrical apparatus detection technique is opened up, this is maximum technique effect.
Brief description of the drawings：
Fig. 1 maintenance free high voltage isolator internal structure schematic diagrams
The high-voltage motor insulated detection means main circuit schematic diagram of separate unit of Fig. 2 high-voltage isolators control
The high-voltage motor insulated detection means exchange control principle drawing of separate unit of Fig. 3 high-voltage isolators control
The high-voltage motor insulated detection means DC control schematic diagram of separate unit of Fig. 4 high-voltage isolators control
Static contact structure figure made of a kind of polytetrafluoroethylmaterial materials of Fig. 5
1 bottom plate, 2 terminal blocks, 3 optoelectronic switches, the lower overcoat of 4 insulation, 5 ferromagnetic core bars, 6 insulation core bars, 7 coils, 8 in Fig. 1
Moving contact, the upper overcoat of 9 insulation, 10 static contacts, 11 springs, 12 porcelain bushing shell fixed seats, 13 porcelain bushing shells, 14 locking nuts, 15 wiring
Pad, 16 insulation columns；
6~10KV high voltage power supplies, QF vacuum circuit breakers, GLQ maintenance free high voltages isolator, ZK1-ZK2 high pressure vacuums in Fig. 2
Relay, M Ω 2500V high-voltage digitals insulation tester, RMThe tested high-voltage motor of motor M insulaion resistances, M, A detections contact,High insulation resistance flexible circuit conductor, SQ optoelectronic switches.
In Fig. 3~220V AC powers, 1Qf miniature circuit breakers, RHACAC power indicator lamp, the detection of SBJ emergent stoppings are pressed
Button, SQ optoelectronic switches, JS auxiliary reclays, SBQ detection buttons, QF vacuum circuit breakers auxiliary normally closed interlock, among J.ZJ1.ZJ2
Relay, GHJ detect whole indicator lamp, discharge indicating lamp, the KT1-KT2 time relays are tested in GHF detections；
DC220V dc sources in Fig. 4,2Qf miniature circuit breakers, RD1-RD2 fuses, RHDCPower supply indicator, GHK1-
GHK2 indicator lamps, GLQ high-voltage isolators, D diodes, R1, R2, R0 resistance, ZK1-ZK2 high pressure vacuum relays；
Embodiment：
Maintenance free high voltage isolator manufactures：
Design：Exceeded alignment request, static-dynamic contact security isolation is away from for 140mm (national standard 10KV levels are 125mm)；It is static-dynamic to touch
Head allows by maximum current 5A, and the normal electric current that detects is ma levels, considers that fortuitous event allows to pass through 5A；
Stock：Material and independent parts are purchased with high standard, high-performance, such as optoelectronic switch, porcelain bushing shell static contact, 10KV
Insulation column, high insulating soft wire and terminal block etc.；
Individual components make：Moving contact core bar and driving coil, insulating coating and bottom plate etc.；
Such as accompanying drawing 1 is completed in part general assembly；
Experiment：
Static parameter test：Coil resistance, coil, dynamic/static contact, the test of optoelectronic switch resistance to earth；
Be powered experiment：Coil fast starting, decompression economical operation experiment；
DC 220V survey line loop currents
V runs survey line loop current
IAB=5A, coil operation 15min, temperature test
Security isolation is away from test
Optoelectronic switch in-situ monitoring is tested
High-potting：Carried out by High-Voltage Electrical Appliances testing standard.
High-voltage isolator GLQ finished products are completed.
High-voltage isolator GLQ prerequisite safety measure specific implementations when being applied in high-voltage motor insulated detection means
Mode；
The instruction of core bar in-situ monitoring, starting interlock circuit embodiment are：Circuit in dotted line frame in accompanying drawing 3, by light
Electric switch SQ, auxiliary reclay JS, indicator lamp GHS, YHS and detection button SBQ compositions, time relay KT2 normally closed delay
Breaking-off contact connection optoelectronic switch SQ, the normally closed interlock JS and normally open contact JS of auxiliary reclay, the other end of optoelectronic switch connect
Meet auxiliary reclay JS, indicator lamp GHS and auxiliary reclay JS and miniature breaking 1QF N-terminal moving contact is connected after connecing, it is normally closed to touch
Head the JS other end connection indicator lamp YHS, the YHS other end connection 1QF N-terminal moving contact, the normally open contact JS other end connect
Meet detection button SBQ.
Core bar driving coil quick starts and is depressured economical operation and core bar driving coil GLQ and is embodied from demagnetization circuit
Mode is：Circuit in dotted line frame in accompanying drawing 4, by fuse RD1, RD2 high-voltage isolator GLQ, resistance R1, R2 and diode D groups
Into (+) pole fuse RD1 other end connection auxiliary reclay normally open contact J, J other end connection isolator GLQ and two poles
Pipe D negative pole, D positive pole connection resistance R2, the R2 other end connection isolator GLQ other end, resistance R1 and middle relay
The other end of the normally closed interlock Js, Js of the device other end connection resistance R1 other end and the normally open contact J, J of auxiliary reclay
Another termination power (-) for connecting fuse RD2, RD2 is extreme.
Claims (7)
1. maintenance free high voltage isolator, including the instruction of maintenance free high voltage insulator body, isolator core bar in-situ monitoring, starting connection
Lock circuit and isolator core bar driving coil fast starting, decompression economical operation and core bar driving coil are exempted to tie up from demagnetization circuit
Protecting high-voltage isolator body includes static contact, moving contact core bar and core bar driving coil, insulating coating and accessory kit composition, its
It is to be screwed to be connected with insulating coating on nylon (9) by porcelain bushing shell (13) to be characterized in maintenance free high voltage isolator static contact, porcelain
Conducting bolt lower end head plane is static contact (10) in sleeve pipe, and interior two locking nuts (14) of conducting bolt outer tip end are immediately high
Insulating soft wireTo segregate high-pressure side, two locking nuts double as static contact compression spring (11) and moving contact stroke
Overshoot regulation is used.
2. maintenance free high voltage isolator according to claim 1, it is characterized in that maintenance free high voltage insulator body includes dynamic touch
Head core bar and core bar driving coil (7), the round bar that moving contact core bar is connected as a single entity by upper and lower two parts unlike material, top half
It is non-magnetic insulation core bar (6), its top is moving contact (8), connects insulating soft wire (B), and the latter half is ferromagnetic core bar
(5), end is ferromagnetic disk, and disk upper surface applies one layer of non magnetic pad, is small end head below disk.
3. maintenance free high voltage isolator according to claim 2, it is characterized in that, the core bar driving coil (7) is AC line
Circle, voltage is DC110~220V, the maximum moving distance of ferromagnetic core bar when the total height of coil is coil electricity, isolator
Security isolation is away from coil total height is slightly less than, and iron yoke surrounds coil up and down, and lower yoke center stays one to be less than ferromagnetic core rod end
The breach of portion's disk diameter.
4. maintenance free high voltage isolator according to claim 1, it is characterized in that the nylon insulating coating (9) is by upper and lower two
It is grouped into, centre is connected through a screw thread integral insulating coating, has one to be easy to moving contact insulation to draw on upper insulating coating wall
The bar hole that line moves up and down, have isolation by hole away from sign, the outer-diameter threads of upper insulating coating lower port with lower insulating coating
Port matches, and interior pass through is less than core bar driving coil external diameter, is easy to upper and lower insulating coating to press core while being fixedly connected
Bar driving coil, lower insulating coating internal diameter upper semisection are slightly larger than driving coil external diameter, coil is put into wherein, under nylon
The interior warp of insulating coating lower semisection is less than driving coil external diameter, is easy to the support end face as driving coil, in the lower exhausted of coil
There is an aperture to do the extraction of coil line on edge overcoat wall to be used, another hole installation optoelectronic switch, lower insulation on lower insulating coating bottom wall
Jacket bottom termination is fixed on bottom plate by flat head bolt.
5. maintenance free high voltage isolator according to claim 1, it is characterized in that the maintenance free high voltage insulator body also wraps
Include accessory kit 10KV class B insulations pillar (16) and monitor the optoelectronic switch SQ (3) and connecting terminal block (2) of core bar home state,
10KV class B insulations pillar is on the bottom plate by isolator overcoat, in the lower insulating coating base wall of optoelectronic switch SQ installations, and it is right
Quasi- ferromagnetic core rod end head, connecting terminal block share 11 terminals, and 2 meet optoelectronic switch SQ, and 2 meet core bar driving coil GLQ, and 2
Only meet switch cubicle vacuum circuit breaker auxiliary normally closed interlock QF, 2 meet detection means starter relay normally closed interlock J, 1 PE
Line, 2 standby, and insulator body the whole series are arranged on high-tension switch cabinet cable during use together on the bottom plate with expansion bolt
On room floor.
6. maintenance free high voltage isolator according to claim 1, it is characterized in that the isolator core bar in-situ monitoring is indicated, risen
Dynamic interlock circuit is made up of optoelectronic switch SQ, auxiliary reclay JS, indicator lamp GHS, YHS and detection button SBQ, the time relay
KT2 normally closed delay breaking-off contact connection optoelectronic switch SQ, the normally closed interlock JS of auxiliary reclay and normally open contact JS, photoelectricity are opened
The other end of pass connects auxiliary reclay JS, indicator lamp GHS and auxiliary reclay JS and miniature breaking 1QF N-terminal is connected after connecing
Moving contact, normally closed interlock the JS other end connection indicator lamp YHS, the YHS other end connection 1QF N-terminal moving contact, normally open contact
JS other end connecting detection button SBQ.
7. maintenance free high voltage isolator according to claim 1, it is characterized in that the isolator core bar driving coil quickly rises
Dynamic, decompression economical operation and core bar driving coil from demagnetization circuit, by fuse RD1, RD2 high-voltage isolator GLQ, resistance R1,
R2 and diode D compositions ,+pole fuse the RD1 other end connection auxiliary reclay normally open contact J, J other end connection isolation
Device GLQ and diode D negative pole, D positive pole connection resistance R2, the R2 other end connection isolator GLQ other end, resistance R1
The resistance R1 other end and the normally open contact J of auxiliary reclay are connected with the normally closed interlock Js, Js of the auxiliary reclay other end,
The J other end connection fuse RD2, RD2 another termination power-extreme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720213652.2U CN207067203U (en) | 2017-03-01 | 2017-03-01 | Maintenance free high voltage isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720213652.2U CN207067203U (en) | 2017-03-01 | 2017-03-01 | Maintenance free high voltage isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207067203U true CN207067203U (en) | 2018-03-02 |
Family
ID=61501851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720213652.2U Active CN207067203U (en) | 2017-03-01 | 2017-03-01 | Maintenance free high voltage isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207067203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597039A (en) * | 2017-03-01 | 2017-04-26 | 陈春帧 | Maintenance-free high-voltage isolator |
-
2017
- 2017-03-01 CN CN201720213652.2U patent/CN207067203U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597039A (en) * | 2017-03-01 | 2017-04-26 | 陈春帧 | Maintenance-free high-voltage isolator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203787366U (en) | Residual current circuit breaker | |
| CN108400054A (en) | A kind of outdoor vacuum circuit breaker control system | |
| CN204243728U (en) | Transformer overload protection warning device | |
| CN207067203U (en) | Maintenance free high voltage isolator | |
| CN203365531U (en) | Novel alternating-current and direct-current high-voltage electroscope | |
| CN201985056U (en) | Electrical apparatus release used in arc fault protection device | |
| CN106597039A (en) | Maintenance-free high-voltage isolator | |
| CN217741584U (en) | Power strip with zero line disconnection protection function | |
| CN206819924U (en) | Single column support type disconnecting link | |
| CN202259117U (en) | Outdoor AC high-voltage drop type fuse | |
| CN101820164A (en) | Current leakage detection module and current leakage protection circuit breaker with current leakage detection module | |
| CN101282033A (en) | User demarcation load switch | |
| CN203799951U (en) | Single-phase magnetic operating mechanism vacuum circuit breaker and intelligent vacuum circuit breaker system | |
| CN106099741A (en) | A kind of Cubicle Gas-Insulated Switchgear | |
| CN206148923U (en) | SPD backup protection ware | |
| CN201656428U (en) | Electricity leakage detection module and electricity leakage protection circuit breaker with the same | |
| CN205862992U (en) | Current transformer and use the switch cubicle of this current transformer | |
| CN204884993U (en) | Novel high -voltage switch | |
| CN211182804U (en) | Grounding protection device | |
| CN219456307U (en) | Circuit key point voltage fluctuation testing device | |
| CN214848389U (en) | Power-off protection device adopting contactor | |
| CN214380710U (en) | Wall-mounted soft starting device suitable for fire fighting | |
| CN216819390U (en) | Arc suppression coil integrated equipment based on soft switching of high-voltage fast switch | |
| CN213122181U (en) | Comprehensive alternating current voltage withstand test device for 10kv electrical equipment | |
| CN211239316U (en) | Induction type anticreeper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |