CA2066648A1 - Surge protector for telecommunications equipment - Google Patents

Surge protector for telecommunications equipment

Info

Publication number
CA2066648A1
CA2066648A1 CA 2066648 CA2066648A CA2066648A1 CA 2066648 A1 CA2066648 A1 CA 2066648A1 CA 2066648 CA2066648 CA 2066648 CA 2066648 A CA2066648 A CA 2066648A CA 2066648 A1 CA2066648 A1 CA 2066648A1
Authority
CA
Canada
Prior art keywords
spacer
protector
equipment
line
contact member
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
CA 2066648
Other languages
French (fr)
Other versions
CA2066648C (en
Inventor
Francis Yun-Tai Hung
James Edward Anderson
Paul Andrew Taylor
William Patrick Trumble
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.)
CCS Holdings Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2066648A1 publication Critical patent/CA2066648A1/en
Application granted granted Critical
Publication of CA2066648C publication Critical patent/CA2066648C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A protector for protecting equipment, especially telephone equipment, against high voltage and/or current surges such as are caused by lightning in the vicinity of the equipment or the cables to which it is connected, comprises one or more overvoltage pro-tectors (42, 58; 234, 236) mounted upon one face of an insulating support (18; 218). A generally planar contact member (62; 290, 312) mounted upon the support member has a ground contact member (90; 296) to make contact with a ground electrode (114;
310) in the equipment to be protected and with each overvoltage protector. A spacer (60; 320, 322) of fusible plastics material cou-pled thermally to the protection device melts when a sustained fault occurs. As the spacer melts, it permits an electrical connect tion between the contact member and the line to which the over-voltage protector is connected, effectively short-circuiting the line to ground. Overcurrent protection may be provided by means of a resistor (116) disposed in series with the line and located close to the plastics spacer so as to heat the spacer when an overcurrent occurs. In one case, the spacer comprises a film (60) interposed directly between a pair of contacts (40, 74') which serve to short-circuit the protector. In another case, the spacer comprises a limb (324) with relatively thin lateral projections (328, 338) which melt and shear. In both cases, the spacer preferably comprises high density, high molecular weight polyethylene.
CA 2066648 1989-10-02 1990-10-02 Surge protector for telecommunications equipment Expired - Fee Related CA2066648C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41578089A 1989-10-02 1989-10-02
US415,780 1989-10-02

Publications (2)

Publication Number Publication Date
CA2066648A1 true CA2066648A1 (en) 1991-04-03
CA2066648C CA2066648C (en) 1997-04-15

Family

ID=23647161

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2066648 Expired - Fee Related CA2066648C (en) 1989-10-02 1990-10-02 Surge protector for telecommunications equipment

Country Status (4)

Country Link
EP (1) EP0494901A1 (en)
JP (1) JPH04505991A (en)
CA (1) CA2066648C (en)
WO (1) WO1991005387A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062054A (en) * 1976-08-31 1977-12-06 Tii Corporation Multi-function fail-safe arrangements for overvoltage gas tubes
US4086648A (en) * 1976-11-01 1978-04-25 Cook Electric Company Protector module
US4132915A (en) * 1977-01-14 1979-01-02 Joslyn Mfg. And Supply Co. Spark gap protector
US4233641A (en) * 1979-04-06 1980-11-11 Reliable Electric Company Line protector for a communications circuit
IN170586B (en) * 1987-01-07 1992-04-18 Samhwa Electric Ind Co
US4796150A (en) * 1987-04-16 1989-01-03 American Telephone And Telegraph Company, At&T Bell Laboratories Telecommunication protector unit with pivotal surge protector
US4856060A (en) * 1988-08-01 1989-08-08 Porta Systems Corp. Solid state telephone protector module

Also Published As

Publication number Publication date
CA2066648C (en) 1997-04-15
JPH04505991A (en) 1992-10-15
WO1991005387A1 (en) 1991-04-18
EP0494901A1 (en) 1992-07-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed