JPS57128859A - Partial discharge current measuring method for power cable - Google Patents

Partial discharge current measuring method for power cable

Info

Publication number
JPS57128859A
JPS57128859A JP1550781A JP1550781A JPS57128859A JP S57128859 A JPS57128859 A JP S57128859A JP 1550781 A JP1550781 A JP 1550781A JP 1550781 A JP1550781 A JP 1550781A JP S57128859 A JPS57128859 A JP S57128859A
Authority
JP
Japan
Prior art keywords
cable
shield
partial discharge
measured
power cable
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.)
Granted
Application number
JP1550781A
Other languages
Japanese (ja)
Other versions
JPH0233996B2 (en
Inventor
Toshio Kasahara
Mitsugi Aihara
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.)
SWCC Corp
Original Assignee
Showa Electric Wire and Cable 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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP1550781A priority Critical patent/JPH0233996B2/en
Publication of JPS57128859A publication Critical patent/JPS57128859A/en
Publication of JPH0233996B2 publication Critical patent/JPH0233996B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE:To enable shield for electrostatic and electromagnetic noise without using a shield room, and to achieve small-sized measuring circuits, by constituting a low-pass filter with a cable connected to a power cable to be measured. CONSTITUTION:An LPF consisting of a magnetic substance 3 such as ferrite, a coil conductor 41a wound around it, a shield semiconductor 7, an insulator 8, a sheath shield 41b, a sheath 41b' is of cable shape to form an LPF cable 41. Partial discharge of a cable 1 can be measured by coupling this cable 41 to the cable 1 to be measured through cable heads 91, 91 of gas insulation connected to a sensor 33 of a discharge separation circuit via a couping capacitor cable 42. With this constitution, the measuring circuit is made small in size, and electrostatic induction and electromagnetic noise can be shielded without using a shield room, allowing to measure partial discharge simply and surely.
JP1550781A 1981-02-04 1981-02-04 DENRYOKUKEEBURUNOBUBUNHODENSOKUTEIHOHO Expired - Lifetime JPH0233996B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1550781A JPH0233996B2 (en) 1981-02-04 1981-02-04 DENRYOKUKEEBURUNOBUBUNHODENSOKUTEIHOHO

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1550781A JPH0233996B2 (en) 1981-02-04 1981-02-04 DENRYOKUKEEBURUNOBUBUNHODENSOKUTEIHOHO

Publications (2)

Publication Number Publication Date
JPS57128859A true JPS57128859A (en) 1982-08-10
JPH0233996B2 JPH0233996B2 (en) 1990-07-31

Family

ID=11890712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1550781A Expired - Lifetime JPH0233996B2 (en) 1981-02-04 1981-02-04 DENRYOKUKEEBURUNOBUBUNHODENSOKUTEIHOHO

Country Status (1)

Country Link
JP (1) JPH0233996B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59104567A (en) * 1982-12-07 1984-06-16 Hitachi Cable Ltd Cable electro-mechanical test terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59104567A (en) * 1982-12-07 1984-06-16 Hitachi Cable Ltd Cable electro-mechanical test terminal
JPH0345346B2 (en) * 1982-12-07 1991-07-10 Hitachi Cable

Also Published As

Publication number Publication date
JPH0233996B2 (en) 1990-07-31

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