SE8504396D0 - GROUND FAULT CURRENT INTERRUPTER CIRCUIT WITH OPEN NEUTRAL AND GROUND LEAD PROTECTION - Google Patents

GROUND FAULT CURRENT INTERRUPTER CIRCUIT WITH OPEN NEUTRAL AND GROUND LEAD PROTECTION

Info

Publication number
SE8504396D0
SE8504396D0 SE8504396A SE8504396A SE8504396D0 SE 8504396 D0 SE8504396 D0 SE 8504396D0 SE 8504396 A SE8504396 A SE 8504396A SE 8504396 A SE8504396 A SE 8504396A SE 8504396 D0 SE8504396 D0 SE 8504396D0
Authority
SE
Sweden
Prior art keywords
ground
open
neutral
lead
secondary winding
Prior art date
Application number
SE8504396A
Other languages
Swedish (sv)
Other versions
SE448795B (en
Inventor
R H Legatti
Original Assignee
Technology Res Corp
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 Technology Res Corp filed Critical Technology Res Corp
Priority to SE8504396A priority Critical patent/SE448795B/en
Publication of SE8504396D0 publication Critical patent/SE8504396D0/en
Publication of SE448795B publication Critical patent/SE448795B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents

Landscapes

  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The circuit has open neutral and open ground lead conditions to create actuation of the interrupter circuit, as well as a ground fault. A supplemental secondary winding (71), responsive to the voltage between the neutral and ground leads (13,15) is used on the differential transformer of a common type of ground fault interrupter circuit. By virtue of couplings (81) to the live lead (11), an open neutral lead (13) or an open ground lead (15) produces a current flow through the supplemental secondary winding (71) that induces a trip signal in the secondary winding (37) to initiate opening of the power line (11). The supplemental secondary winding may induce a trip signal in the transformer only for an open ground lead (15), while tripping for an open neutral (13) is achieved by directly gating an SCR switch (55).
SE8504396A 1985-09-23 1985-09-23 Ground fault current interrupter circuit for power lines SE448795B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8504396A SE448795B (en) 1985-09-23 1985-09-23 Ground fault current interrupter circuit for power lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8504396A SE448795B (en) 1985-09-23 1985-09-23 Ground fault current interrupter circuit for power lines

Publications (2)

Publication Number Publication Date
SE8504396D0 true SE8504396D0 (en) 1985-09-23
SE448795B SE448795B (en) 1987-03-16

Family

ID=20361487

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8504396A SE448795B (en) 1985-09-23 1985-09-23 Ground fault current interrupter circuit for power lines

Country Status (1)

Country Link
SE (1) SE448795B (en)

Also Published As

Publication number Publication date
SE448795B (en) 1987-03-16

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