EP2988372B1 - Hochspannungs-Stromklemme - Google Patents

Hochspannungs-Stromklemme Download PDF

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Publication number
EP2988372B1
EP2988372B1 EP14002930.7A EP14002930A EP2988372B1 EP 2988372 B1 EP2988372 B1 EP 2988372B1 EP 14002930 A EP14002930 A EP 14002930A EP 2988372 B1 EP2988372 B1 EP 2988372B1
Authority
EP
European Patent Office
Prior art keywords
clamp
screws
semi
openings
halves
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
EP14002930.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2988372A1 (de
Inventor
Oskar Liebhart
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.)
Austrian Power Grid AG
Original Assignee
Austrian Power Grid AG
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 Austrian Power Grid AG filed Critical Austrian Power Grid AG
Priority to SI201430053A priority Critical patent/SI2988372T1/sl
Priority to EP14002930.7A priority patent/EP2988372B1/de
Priority to PL14002930T priority patent/PL2988372T3/pl
Priority to HUE14002930A priority patent/HUE030191T2/en
Priority to PCT/EP2015/063739 priority patent/WO2016030039A1/de
Publication of EP2988372A1 publication Critical patent/EP2988372A1/de
Application granted granted Critical
Publication of EP2988372B1 publication Critical patent/EP2988372B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Definitions

  • the invention relates to a high-voltage current clamp for applications from 60 kV upwards with two mutually approximately mirror images of oppositely arranged elongated clamping halves, each having two parallel longitudinal grooves for receiving the end portions to be connected two parallel power line cables, which longitudinal grooves have part-circular cross-sections; while the two clamping halves are clamped against each other by means of several, preferably three, in the direction of the longitudinal grooves and cables arranged one behind the other screws; the screws pass through openings in the two clamping halves arranged in the longitudinal axis of symmetry of the clamping halves, and their end sections are arranged completely in recesses on the sides of the clamping halves opposite the longitudinal grooves within a curve approximately semicircular or semi-elliptical in shape circumscribing the outer contour of the current clamp.
  • Such a known current terminal is described in the Fig. 1-3 , where they are in Fig. 1 in side view together with two clamped end portions of the same thicker cables, in Fig. 2 in plan view and in Fig. 3 in a cross section along the line III-III in Fig. 1 is shown.
  • Such a current terminal which has a lower clamping half 1 and an upper clamping half 2 with respective longitudinal grooves 3, 4 for receiving the line cables 5, 6 and a series of screws 7 for mating against each other of the two clamping halves 1, 2, is only for connecting end portions of Line cables 5, 6 with the same diameter suitable.
  • Further features are openings 8, 9 in the form of holes surrounding the screws 7 with little play, as well as the openings 8, 9 at the end widening recesses 10 and 11 for the end portions the screws.
  • the heads 7 'of the screws 7 sit in the opening 11 of the upper clamping half 2 with clearance sufficient for a tool, the screw nut 7 is non-rotatably seated in the opening 10 of the lower clamping half 1.
  • a snap ring is 7''', one of elastic Material for holding the screw 7 existing retaining ring designated 7 IV .
  • FIG. 4-6 show a current clamp with approximately semicircular in cross-section longitudinal grooves 3, 3 'and 4, 4', whose different diameters correspond exactly to the different diameters of the line cables 5, 6.
  • the different parts of the current clamp are the same as in the Fig. 1-3 designated.
  • a high voltage power terminal according to the preamble of claim 1 is from document US-A-3012091 known.
  • the invention aims to reduce the labor cost and provision of the parts in connecting the end portions of power line cables, whether they have the same or different cross sections. It's just a type series be necessary with three overlapping cable sections of high voltage power terminals regardless of the diameters of the end portions of the cables to be connected.
  • the invention makes use of the mentioned knowledge that the line cables do not need to be encompassed by almost 180 ° of the clamping halves and their longitudinal grooves and consists in a high-voltage current clamp of the type mentioned above in that the penetrated by the screw holes on the two clamping halves are different widths, the openings in the one clamping half pass the screws only slightly, whereas the openings on the other, upper clamping half in a region adjacent to the former clamping half area are wider and a tilting of the last-mentioned upper clamping half in the case of connecting allow two different thicker cables, wherein the tiltable clamping half comprises the voltage applied to her line cables over a wider sector angle than the screws just passing through clamping half and the radius of the pitch circles of the cross section of each longitudinal groove that the cross section of the thickest s to be clamped line cable corresponds.
  • the invention has the features of independent claim 1.
  • the tiltable clamping half is formed in two parts with a wider inner part, which has the longitudinal grooves and the wide openings for the screws passing through them, and with a narrower outer pressure plate part, which bridges the wide openings and the inner part is electrically conductive surface and there is transversely displaceable with loosened screws.
  • This pressure plate part is used for uniform distribution of torques on the clamping part.
  • the printing plate part has the recess receiving the heads of the screws and forms with its outer contour a portion of the outer contour of the current clamp following semicircular or semi-elliptical curve.
  • the inner wider part of the tiltable clamping half on the heads of the screw receiving recess and the pressure plate member is formed flat, the screws form with the top of their heads a portion of the outer contour of the current terminal following semicircular or semi-elliptical curve.
  • the recess provided in the clamping half halfway through the screws for non-rotatable mounting of a nut.
  • the outer contour of the clamping halves largely follows the semicircular or semi-elliptical curve circumscribing them and avoids sharp corners in cross section.
  • Fig. 7 1 shows the first exemplary embodiment of the current terminal closed via two end sections of the line cables to be connected, in a side view
  • Fig. 8 the current terminal of the Fig. 7 in plan view
  • Fig. 9 this power terminal from the left in Fig. 7 seen here
  • Fig. 10A a section along the line XX in Fig. 7 , where two equal-sized cables with a diameter of 38 mm are connected
  • Fig. 10B a section along the line XX in Fig.
  • Fig. 10C a section along the line XX in Fig. 7 , wherein a 38 mm diameter cable is connected to a 27 mm diameter cable
  • Fig. 10D the cut after Fig. 10A on a larger scale
  • Fig. 11 the second embodiment of the two about connecting end sections of the cable cables closed current terminal in a Schrägriss
  • Fig. 12 in the Fig. 11 shown power terminal with two equally thick connected cables in a side view accordingly Fig. 9
  • Fig. 13 in the Fig. 11 shown power terminal with two different thick connected cables in a side view accordingly Fig. 9 ,
  • FIGS Fig. 7-13 The in the Fig. 1-6
  • the reference numerals used for the parts which are analogous in the prior art to those of the invention are also shown in FIGS Fig. 7-13 used.
  • a lower clamping half 1 is clamped against an upper clamping half 2 by means of a series of three screws 7, wherein between them end portions of power line cables 5, 6 are located in each case two parallel longitudinal grooves 3 and 4 of the two clamping halves 1, 2.
  • the longitudinal grooves 3, 4 have part-circular cross sections with the same radius of the pitch circles, as for the prior art according to the Fig. 1-3 true.
  • the interspersed by the screws 7 openings 8, 9 of the two clamping halves 1, 2 are, unlike in the prior art, different distances:
  • the openings 8 in the lower clamping half 1 leave the screws 7 only with tight clearance, while the openings. 9 in the upper clamping half 2 in a region adjacent to the lower clamping half 1 area are further and allow a tilting of the upper clamping half 2 in the case of connecting two different thickness cables 5, 6.
  • the fixed lower clamping half 1 comprises the voltage applied to her line cables 5, 6 over a sector angle of about 110 °, while the tiltable upper clamping half 2, the line cables 5, 6 over a larger angle of about 140 °.
  • the in the Fig. 11-13 illustrated embodiment is a Um chargedswinkel of about 85 ° of the lower clamping half 1 a Um distributedswinkel of about 130 ° of the tiltable upper clamping half 2 against.
  • the outer contour of the clamping halves 1, 2 largely follows the surrounding semicircular or semi-elliptical curve 12 and 13 and avoids all sharp corners in cross section.
  • the outer pressure plate part 14 'of the tiltable clamping half 2 can therefore be made flat. In contrast to the Fig. 7-10 thus does not follow the pressure plate member 14 'with its outer contour a portion of the outer contour of the power terminal forming semi-circular or semi-elliptical curve 13, but only the inner wider part 2 "together with the top of the screw heads 7'.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
EP14002930.7A 2014-08-23 2014-08-23 Hochspannungs-Stromklemme Active EP2988372B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SI201430053A SI2988372T1 (sl) 2014-08-23 2014-08-23 Visokonapetostni tokovni priključek
EP14002930.7A EP2988372B1 (de) 2014-08-23 2014-08-23 Hochspannungs-Stromklemme
PL14002930T PL2988372T3 (pl) 2014-08-23 2014-08-23 Zacisk prądowy wysokiego napięcia
HUE14002930A HUE030191T2 (en) 2014-08-23 2014-08-23 High voltage clamp
PCT/EP2015/063739 WO2016030039A1 (de) 2014-08-23 2015-06-18 Hochspannungs-stromklemme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14002930.7A EP2988372B1 (de) 2014-08-23 2014-08-23 Hochspannungs-Stromklemme

Publications (2)

Publication Number Publication Date
EP2988372A1 EP2988372A1 (de) 2016-02-24
EP2988372B1 true EP2988372B1 (de) 2016-07-20

Family

ID=51429005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14002930.7A Active EP2988372B1 (de) 2014-08-23 2014-08-23 Hochspannungs-Stromklemme

Country Status (5)

Country Link
EP (1) EP2988372B1 (sl)
HU (1) HUE030191T2 (sl)
PL (1) PL2988372T3 (sl)
SI (1) SI2988372T1 (sl)
WO (1) WO2016030039A1 (sl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105633609B (zh) * 2016-02-29 2017-11-03 宿松恒达电气配件有限公司 一种新型线夹
CN105826702A (zh) * 2016-04-07 2016-08-03 国网山东滨州市沾化区供电公司 一种用于低压电力电缆的机械式分支连接器
CN109035647A (zh) * 2018-09-25 2018-12-18 陕西三海机电工程有限公司 一种电缆防盗装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986721A (en) * 1958-10-21 1961-05-30 Harold G Conright Clamp holding tool
US3012091A (en) * 1959-10-20 1961-12-05 Schiffmann Alois Electrical connector
CH412033A (de) * 1963-04-10 1966-04-30 Bbc Brown Boveri & Cie Als Bündelleiter ausgebildete Sammelschiene
BE789166A (fr) * 1971-09-29 1973-01-15 Pfisterer Elektrotech Karl Borne de derivation entierement isolee pour conducteurs isoles de lignes aeriennes
FR2631491B1 (fr) * 1988-05-13 1991-12-06 Sicame Sa Cale pour connecteur electrique de derivation, et connecteur electrique de derivation comportant une telle cale

Also Published As

Publication number Publication date
WO2016030039A1 (de) 2016-03-03
EP2988372A1 (de) 2016-02-24
HUE030191T2 (en) 2017-04-28
PL2988372T3 (pl) 2017-01-31
SI2988372T1 (sl) 2016-10-28

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