CN85105582A - The earthed switch of strip resistance device - Google Patents
The earthed switch of strip resistance device Download PDFInfo
- Publication number
- CN85105582A CN85105582A CN 85105582 CN85105582A CN85105582A CN 85105582 A CN85105582 A CN 85105582A CN 85105582 CN85105582 CN 85105582 CN 85105582 A CN85105582 A CN 85105582A CN 85105582 A CN85105582 A CN 85105582A
- Authority
- CN
- China
- Prior art keywords
- resistor
- ground connection
- movable lateral
- earthed switch
- lateral electrode
- 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.)
- Pending
Links
Images
Abstract
For the earthed switch that has resistor that the residual charge on the electric equipment is discharged in the ground comprises: in a ground connection cell, be provided with the converting unit that can be connected with electric equipment, to realize selectively electric equipment being passed through resistance-grounded system, be characterized as this converting unit and mechanically support with opposing effect mechanical force thereon when converting unit is operated with the electric insulation support component; Resistor only is connected between converting unit and the ground connection cell on electric, is used on this resistor thereby form no mechanical masterpiece.
Description
The present invention relates to the earthed switch that has resistor, this resistor is to be contained in the closed container that is full of insulating gas.
In the common earthed switch that a cable grounding is arranged; owing in cable core, produce impact in the discharge of the residual charge on the cable; this impact causes induced voltage to cause the dielectric breakdown of the anticorrosion protection layer of cable sheath in cable sheath, causes hole thus on cable sheath.Therefore adopt the earthed switch that has resistor, cable system passes through the grounding through resistance in this switch, thereby makes impact value be subjected to the restriction of this resistance.
In this earthed switch that has a resistor, owing to discharge is added to the proportional increase along with the increase of cable capacitance amount of ohmically energy, so required resistor volume of joining is also very big when the electrostatic capacitance of cable is very big.
In the earthed switch of common strip resistance device, its active side electrode system is arranged in the ground connection closed box that insulating gas is housed, and fixed side electrode is established its opposite ， And then separatedly and is connected electrically on the cable.Be inserted with a moving contact on movable lateral electrode, this moving contact can be linearly moved to fixed contact on the fixed side electrode and contact.In the ground connection case, there is a resistor to be supported on being electrically connected of the end that movable lateral electrode Shang And constitutes movable lateral electrode and ground connection case, top in movable lateral electrode is provided with the movable side contact that an opening makes progress, and this contact can form electric the contact with the earth rod that rotates along with the rectilinear motion of moving contact in movable lateral electrode.Earth rod then is electrically connected with the ground connection case.
When earth rod during towards the rotation of the direction of the movable side contact on top, the residual charge on the cable discharges into the ground connection case by fixed side electrode, moving contact, movable lateral electrode and resistor.When the movable side contact that makes progress when earth rod and opening contacted, moving contact promptly was plugged into deciding in the contact on the fixed side electrode fully, and this is a kind of normal ground state.In this normal ground state, the electric charge on the cable discharges into the ground connection case by movable side contact and the earth rod that fixed side electrode, moving contact, movable lateral electrode, opening make progress.
But in aforesaid earthed switch with resistor: since moving contact point-blank in the process of fixed side electrode motion a very big load to the fixed side electrode impulsion be added on the resistor, therefore need the very big resistor of intensity.
In order to overcome above-mentioned various shortcomings: one object of the present invention is that a kind of earthed switch with resistor is provided, it is non-loaded in the ground connection operating process to be added on this resistor, therefore and unnecessary very strong resistor ， And and can obtain the earthed switch of reliable strip resistance device.
From above-mentioned purpose, the present invention belongs to and is provided with this earthed switch that the residual charge in this equipment is discharged in the ground being used on the electric equipment: include a converting unit that can be connected on the electric equipment in a ground connection cell, think selectively electric equipment is passed through resistance-grounded system, it is characterized in that, described converting unit mechanically is to support with what opposing took place in switching manipulation with an electric insulation supporter to act on mechanical force on this converting unit, described resistor only electrically is connected between this converting unit and the above-mentioned ground connection cell, and ways of connecting is to the unlikely generation mechanical force of this resistor.
The present invention will describe in conjunction with following preferred embodiment shown in the drawings.
Fig. 1 is the embodiment according to the earthed switch of the three-phase type strip resistance device that the present invention constituted, the sectional drawing under disconnection, its moving contact with decide contact and do not contact;
Fig. 2 is the sectional drawing under the moving contact forward fixed side electrode contact situation; And
Fig. 3 be moving contact fully with sectional drawing under fixed side electrode contacts.
In Fig. 1, this earthed switch according to the strip resistance device that the present invention constituted is a three-phase type, and it includes: be arranged on a movable lateral electrode 3 in the airtight ground connection case 1, be full of a kind of insulating gas, for example SF in this case
6Gas; With a fixed side electrode 2, it has a fixed contact 2a, forms with a cable thus to be electrically connected.Include fixed side electrode 2 and fixed contact 2a according to the fixed side electrode assembly that the present invention assembled.Movable lateral electrode 3 arranges that facing to fixed side electrode 2 ， And supports with an insulation board 11, and this insulation board is with movable lateral electrode 3 and ground connection case 1 electric insulation.Insulation board 11 preferably adopts organic insulating material, as includes the insulating material of the epoxy resin of glass fibre.There is the moving contact 3b of a lengthening to be inserted into movable lateral electrode 3 Zhong And and can be linearly moved to electric contact of fixed contact 2a with fixed side electrode 2, be provided with the movable side contact 3a that an opening makes progress on the top of movable lateral electrode 3.
Be connected to an insulating bar 3c on the moving contact 3b to drive this moving contact 3b to fixed contact 2a, common L type connecting rod 3d received rotatably that insulating bar 3c goes up and connecting rod 3e on, 3e then is connected to the end of swingle 3f, 3f then can be rotated by 8 Zhi Cheng of framework And, and the end in addition of swingle 3f then is connected to the end of earth rod 5a by a Connection Element.When earth rod 5a around near a bit the rotating of termination the time, the movable side contact 3a that its other end just can move to opening the makes progress And that contacts has connected ground connection side contact 5b thus, and the in addition end of ground connection side contact 5b is fixed on the framework 8, and this ground connection side contact 5b then electrically is connected on the ground connection case 1 by earth rod 7 that an insulated terminal 9 supported.
For second mutually preferably referring to Fig. 3, another pitman 3 ' d rotatably is connected on the insulating rod 3 ' c by framework 8 Zhi Cheng And, and 3 ' c then joins with the moving contact 3 ' b of a lengthening.This moving contact 3 ' b then be inserted into movable lateral electrode 3 ′ And can be linearly moved to fixed side electrode 2 ' in.Moving contact 3 ' b, fixed side electrode 2 ' and movable lateral electrode 3 ' correspond respectively to moving contact 3b, fixed side electrode 2 and movable lateral electrode 3, movable lateral electrode 3 ' have a contact that moves upward to be similar to the movable side contact 3a that the opening on the movable lateral electrode 3 makes progress.Similar to movable lateral electrode 3, thus this movable side contact 3 ' by insulation board 11 supports and forms electric insulation with ground connection case 1.
Movable lateral electrode 3 of resistor 4 and 4 ' be respectively fixed to and 3 ′ Shang And form with it and are electrically connected, and with the bottom surface of ground connection case 1 be what to separate.Resistor 4 and 4 ' mat ground lead 4a and 4 ' a are connected electrically on the bottom surface of ground connection case 1.Ground connection case 1 is stamped the cover plate 10 ， And and the casing ground connection of an atresia, each resistor 4 and 4 ', every ground lead 4a and 4 ' a, and insulation board 11 all is the part of strip resistance device earthed switch of the present invention.
The operation with the earthed switch of above-mentioned band grounding resistor now is described below.
When connecting rod 3d is rotated with counter-clockwise direction by the state shown in Fig. 1, moving contact 3b and 3 ' b respectively the driving by insulating bar 3c and 3 ' c towards fixed side electrode 2 and 2 ' move as straight line, and also rotation side by side of earth rod 5a by the effect of connecting rod 3e and swingle 3f, during this section action, as shown in Figure 2, moving contact 3b electrically touches a fixation side 2a, and this moment, the residual charge in cable promptly discharged in the ground by fixed side electrode 2, moving contact 3b, movable lateral electrode 3, resistor 4, ground lead 4a and ground connection case 1.At this moment, though there is voltage to be added on the movable lateral electrode 3, the electric charge on movable lateral electrode 3 is not directly to flow to ground connection case 1, because insulation board 11 is with movable lateral electrode 3 and ground connection case 1 electric insulation.
When connecting rod 3d was further rotated, earth rod 5a rotation also contacted with movable side contact 3a that opening makes progress, and as shown in Figure 3, so that this switching device is placed in general ground state.Under this state, movable side contact 3a, earth rod 5a that the electric charge in fixed side electrode 2 makes progress via moving contact 3c, movable lateral electrode 3, opening and earth rod 7 and discharge on the ground connection case 1.The ground connection class of operation of moving contact 3 ' b is same as the ground connection operation of above-mentioned moving contact 3b.
In the above-described embodiments, the earthed switch of described strip resistance device is to belong to the three-phase equipment of pattern that combines, but also can constitute the equipment of split-phase type.
In aforesaid the present invention, support and form electric insulation owing to there has been a resistor to be fixed on the drawer at movable side electrode and with an insulator, so when moving contact moves towards fixed side electrode, non-loadedly be added on the resistor, therefore, resistor reliable operation and very economical are because to the size of resistor condition without limits, so can be according to the kind of cable and length or other parameter and select arbitrarily the size of resistor.
Claims (4)
1, the earthed switch that residual charge with on it that is used on the electric equipment discharges into the strip resistance device on ground includes: the cell of a ground connection, wherein there is a converting unit that can be connected on the electric equipment selectively this electric equipment to be passed through a resistor and ground connection with realization, it is characterized by, this converting unit is mechanically being supported by the support component of an electric insulation (11), to resist the mechanical force that when this converting unit is operated, adds thereon, and this resistor (4) just is connected between this converting unit and the above-mentioned ground connection cell (1) on electric, and its connected mode forms no mechanical force and is added on this resistor.
2, the earthed switch of a strip resistance device includes for residual charge is discharged by it: fixed side electrode assembly (2,2 '); Movable lateral electrode (3,3 '), it is contained in the container (1) of a ground connection dividually facing to fixed side electrode assembly (2,2 '); Moving contact (3c, 3 ' c), they are inserted into movable lateral electrode (3 respectively, 3 ') in, and can move to and the electric contact of fixed side electrode assembly (2,2 '), it is characterized in that, be equiped with insulator (11) so that support movable lateral electrode (3,3 ') and should movable lateral electrode (3,3 ') and grounding container (1) mutually insulated; And for the residual charge on the movable lateral electrode (3,3 ') is discharged into electric discharge device on the grounding container (1) by resistor (4,4 '); The power that described electric discharge device can prevent to be added on the movable lateral electrode (3,3 ') goes up transmission by resistor (4,4 ') to grounding container (1).
3, as the earthed switch of the desired strip resistance device of claim 2, it is characterized in that described insulator (11) includes an insulation board of being made by organic insulating material, for example make with the epoxy resin that contains glass fibre.
4, as the earthed switch of the desired strip resistance device of claim 2, it is characterized in that described resistor (4,4 ') is fixed on the active side electrode (3,3 '), and described electric discharge device have ground lead (4a, 4 ' a), by and resistor (4,4 ') is connected electrically on the grounding container (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105582 CN85105582A (en) | 1985-06-27 | 1985-06-27 | The earthed switch of strip resistance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105582 CN85105582A (en) | 1985-06-27 | 1985-06-27 | The earthed switch of strip resistance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85105582A true CN85105582A (en) | 1986-12-24 |
Family
ID=4794572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105582 Pending CN85105582A (en) | 1985-06-27 | 1985-06-27 | The earthed switch of strip resistance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85105582A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478119B (en) * | 2009-01-24 | 2012-05-09 | 国网电力科学研究院 | Earthing process for transforming plant protecting device shielding chamber |
| CN103368097A (en) * | 2012-04-03 | 2013-10-23 | Ls产电株式会社 | Switch for solid insulated switchgear |
-
1985
- 1985-06-27 CN CN 85105582 patent/CN85105582A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478119B (en) * | 2009-01-24 | 2012-05-09 | 国网电力科学研究院 | Earthing process for transforming plant protecting device shielding chamber |
| CN103368097A (en) * | 2012-04-03 | 2013-10-23 | Ls产电株式会社 | Switch for solid insulated switchgear |
| US9065258B2 (en) | 2012-04-03 | 2015-06-23 | Lsis Co., Ltd. | Switch for solid insulated switchgear |
| CN103368097B (en) * | 2012-04-03 | 2016-01-20 | Ls产电株式会社 | For the switch of solid insulation switchgear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4600261A (en) | Apparatus and method for protection of electrical contacts | |
| JPS62233007A (en) | Compact type gas insulated switchgear | |
| CN1077063A (en) | Metal shell all-closed gas insulating SF with bus device 6Switching device | |
| CN85105582A (en) | The earthed switch of strip resistance device | |
| US4300028A (en) | Rotary switch for gas-insulated substations | |
| CN2817142Y (en) | Small-sized gas-insulated metal closed switch device | |
| CN208368275U (en) | A kind of resistance unit and the multicolumn lightning arrester connected in parallel comprising the resistance unit | |
| CN201247663Y (en) | Whole insulation composite greatcoat type metal-oxide lighting arrester core body | |
| DE4216970A1 (en) | High-tension air-break isolating switch with rotary contact arm - incorporates vertical arrangement of upper and lower insulator strings joined by gearbox for arm rotation in vertical plane | |
| CN2657184Y (en) | Electronic water-proof switch | |
| CN111326869A (en) | Distribution transformer grounding structure capable of increasing grounding area and facilitating ground insertion installation | |
| JPS6113515A (en) | Ground switch with resistor | |
| CN220234188U (en) | Improved transformer neutral point complete equipment | |
| CN218384968U (en) | Isolating switch and open type combined electrical apparatus | |
| CN2762377Y (en) | High-voltage line bank used no high-voltage equipment | |
| JPH0226334B2 (en) | ||
| CN2533564Y (en) | Isolating switch | |
| CN214336624U (en) | Novel three-phase isolation grounding switch | |
| CN1571074A (en) | Conductive rubber and electronic component using same | |
| CN211790394U (en) | SF (sulfur hexafluoride)6Load switch shell | |
| CN217641112U (en) | Circuit breaker | |
| CN218849350U (en) | Insulation shielding type grounding switch | |
| NO942541L (en) | Encapsulated, insulator gas-filled medium voltage coupling cell | |
| CN2133045Y (en) | 10 kv air high voltage a.c. contactor | |
| CN2624365Y (en) | High frequency high voltage filter capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |