GB1329635A - Device for the relief of dielectric stress in high voltage cable splices terminations and regions adjacent ground electrodes - Google Patents

Device for the relief of dielectric stress in high voltage cable splices terminations and regions adjacent ground electrodes

Info

Publication number
GB1329635A
GB1329635A GB1329635DA GB1329635A GB 1329635 A GB1329635 A GB 1329635A GB 1329635D A GB1329635D A GB 1329635DA GB 1329635 A GB1329635 A GB 1329635A
Authority
GB
United Kingdom
Prior art keywords
tube
cable
high voltage
terminations
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.)
Expired
Application number
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1329635A publication Critical patent/GB1329635A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/06—Cable terminating boxes, frames or other structures
    • H02G15/064—Cable terminating boxes, frames or other structures with devices for relieving electrical stress
    • H02G15/068—Cable terminating boxes, frames or other structures with devices for relieving electrical stress connected to the cable shield only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/103—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress
    • H02G15/105—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only

Abstract

1329635 Cable joints and terminations; insulators MINNESOTA MINING & MFG CO 20 April 1971 10205/71 Headings H2C and H2E A device for relieving dielectric stress in high voltage shielded and insulated cables comprises a housing, one or more ground electrodes adapted to be connected to the shielding of one or more cables and one or more tubes comprising a titanate and/or titanium dioxide surrounding an exposed portion of the insulation of the or each cable and contacting a respective ground electrode. The device may be used at a cable splice, at the support between a transmission line and a transmission tower or, as shown in Fig. 3 at a cable termination. A conductively glazed porcelain housing 30, supported by a mounting bracket 34, contains the end of a cable 20 comprising a conductor 22, insulation 26 and shielding 24, a ground electrode 14, a high voltage electrode 16 and a tube 12 supported within dielectric filler 28. The tube 12 which is composed of barium titanate and a ceramic and has a relative permittivity of 600, has its ends coated with silver and contacting the electrodes 14, 16. The filler 28 may comprise rubber, silicone grease, phenol-aldehyde, silicone gums or resins and the tube may be additionally supported by springs or clamps (not shown); the tube may also comprise MgO, hexamethylene diamine and hexafluoropropylene. In the embodiments of Figs. 4 and 5 (not shown) the tube contacts only one electrode or comprises two portions contacting the ground and highvoltage electrodes respectively but not each other.
GB1329635D 1971-04-20 1971-04-20 Device for the relief of dielectric stress in high voltage cable splices terminations and regions adjacent ground electrodes Expired GB1329635A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1020571 1971-04-20

Publications (1)

Publication Number Publication Date
GB1329635A true GB1329635A (en) 1973-09-12

Family

ID=9963521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1329635D Expired GB1329635A (en) 1971-04-20 1971-04-20 Device for the relief of dielectric stress in high voltage cable splices terminations and regions adjacent ground electrodes

Country Status (1)

Country Link
GB (1) GB1329635A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT375220B (en) * 1981-09-30 1984-07-10 Silec Liaisons Elec ELECTRODE TO REDUCE ELECTRICAL LOADS AT THE END OF THE CONNECTION OF A SHIELDED ELECTRIC CONDUCTOR
EP0388779A2 (en) * 1989-03-20 1990-09-26 Alcatel Stk A/S Cable termination

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT375220B (en) * 1981-09-30 1984-07-10 Silec Liaisons Elec ELECTRODE TO REDUCE ELECTRICAL LOADS AT THE END OF THE CONNECTION OF A SHIELDED ELECTRIC CONDUCTOR
EP0388779A2 (en) * 1989-03-20 1990-09-26 Alcatel Stk A/S Cable termination
EP0388779A3 (en) * 1989-03-20 1992-01-15 Alcatel Stk A/S Cable termination
US5206780A (en) * 1989-03-20 1993-04-27 Alcatel Stk A/S Cable termination

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees