FR2253299A1 - Electric equipment safety connector - can isolate the case of the equipment when insulation is faulty - Google Patents

Electric equipment safety connector - can isolate the case of the equipment when insulation is faulty

Info

Publication number
FR2253299A1
FR2253299A1 FR7439094A FR7439094A FR2253299A1 FR 2253299 A1 FR2253299 A1 FR 2253299A1 FR 7439094 A FR7439094 A FR 7439094A FR 7439094 A FR7439094 A FR 7439094A FR 2253299 A1 FR2253299 A1 FR 2253299A1
Authority
FR
France
Prior art keywords
equipment
case
current
insulation
tertiary winding
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
FR7439094A
Other languages
French (fr)
Other versions
FR2253299B3 (en
Inventor
H W Vind
F Sorensen
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of FR2253299A1 publication Critical patent/FR2253299A1/en
Application granted granted Critical
Publication of FR2253299B3 publication Critical patent/FR2253299B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Transformers (AREA)

Abstract

The safety connector (10) for electric equipment (5) comprises a current transformer (12) with a tertiary winding (15). When an insulation fault occurs between a circuit element (7) within the electric equipment and the case (5) of this equipment, a difference between currents in the wires (8, 9) supplying the equipment can occur. The tertiary winding can sense this difference in currents. If the tertiary winding current rises above a preset level, it will actuate a relay or a semiconductor device (11) so as to increase the current demand from the mains. The current can then set-off a fuse (3) and cut-off the mains supply from the equipment. All the component contained within block (10) can be assembled within a normal electric plug if a judicious choice is made of these components.
FR7439094A 1973-12-01 1974-11-28 Electric equipment safety connector - can isolate the case of the equipment when insulation is faulty Granted FR2253299A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2360037A DE2360037A1 (en) 1973-12-01 1973-12-01 SAFETY CIRCUIT FOR AN ELECTRICAL DEVICE

Publications (2)

Publication Number Publication Date
FR2253299A1 true FR2253299A1 (en) 1975-06-27
FR2253299B3 FR2253299B3 (en) 1977-08-26

Family

ID=5899666

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439094A Granted FR2253299A1 (en) 1973-12-01 1974-11-28 Electric equipment safety connector - can isolate the case of the equipment when insulation is faulty

Country Status (11)

Country Link
JP (1) JPS5086652A (en)
AU (1) AU7491274A (en)
BE (1) BE821917A (en)
BR (1) BR7410014A (en)
DE (1) DE2360037A1 (en)
DK (1) DK572174A (en)
ES (1) ES432378A1 (en)
FR (1) FR2253299A1 (en)
IT (1) IT1024884B (en)
NL (1) NL7415418A (en)
NO (1) NO744280L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426973A1 (en) * 1978-05-23 1979-12-21 Laprom Corp Nv LEAKAGE CURRENT CIRCUIT BREAKER
EP0513405A1 (en) * 1991-05-11 1992-11-19 Intermacom A.G. Method and apparatus for current interruption in electrically-powered apparatus and equipment

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412715A (en) * 1981-01-12 1983-11-01 Virginia Patent Development Corp. Modular electrical plug incorporating conductive path
DE3431581A1 (en) * 1984-08-28 1986-03-20 Friedrich Dipl.-Ing. 8033 Krailling Lauerer Electrical circuit breaker
DE3903025A1 (en) * 1989-02-02 1990-08-09 Asea Brown Boveri Method for protecting individuals
DE102004016740B4 (en) * 2004-04-05 2006-08-31 Siemens Ag Method for detecting an insulation fault in a high-voltage converter
JP4942771B2 (en) * 2006-02-23 2012-05-30 シーメンス アクチエンゲゼルシヤフト Overcurrent switchgear and bridge device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS445389Y1 (en) * 1965-09-06 1969-02-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426973A1 (en) * 1978-05-23 1979-12-21 Laprom Corp Nv LEAKAGE CURRENT CIRCUIT BREAKER
EP0513405A1 (en) * 1991-05-11 1992-11-19 Intermacom A.G. Method and apparatus for current interruption in electrically-powered apparatus and equipment

Also Published As

Publication number Publication date
NL7415418A (en) 1975-06-03
DE2360037A1 (en) 1975-06-12
FR2253299B3 (en) 1977-08-26
JPS5086652A (en) 1975-07-12
BR7410014A (en) 1976-05-25
NO744280L (en) 1975-06-30
BE821917A (en) 1975-03-03
DK572174A (en) 1975-07-21
IT1024884B (en) 1978-07-20
AU7491274A (en) 1976-05-06
ES432378A1 (en) 1976-12-01

Similar Documents

Publication Publication Date Title
SE9103304L (en) DEVICE FOR CONNECTING A VOLTAGE CELL TO AN ELECTRIC APPLIANCE
FR2253299A1 (en) Electric equipment safety connector - can isolate the case of the equipment when insulation is faulty
ES470730A1 (en) Improvements relating to electrical fault sensitive apparatus for use with mains powered earthed electrical installations
ES449119A1 (en) Protection circuits
ES8502292A1 (en) Protection apparatus against overvoltages in electrical low-voltage installations or networks.
WO1987001902A3 (en) Protective circuit for electric apparatus
US2976484A (en) Circuit fuse locator
US2368084A (en) Protector
GB1044775A (en) Dynamoelectric machinery
US2334988A (en) Electric motor control system
US2735023A (en) Kozinski
FR2223858A1 (en) Electrical machine imbalance detection cct. - gives alarm or disconnects supply to prevent slipring damage
FR2371805A1 (en) Electrical appliance earth fault protection circuit - uses two step level relays one controlling alarm and supply interruption
GB1462383A (en) Electrical safety device
EP0112311A3 (en) A method for accomplishing a time relay function, and a device for utilization of the method
SU1163406A1 (en) Device for protective disconnection of using equipment
SU595819A1 (en) Device for overload protection of ac electric installation
SU1688346A1 (en) Device for protecting mine electric equipment from thermal damages
ES2003452A6 (en) Over-current protection device
SU1309150A1 (en) Device for protective de-energizing of electrical installation in a.c.network
GB901327A (en) Starter relay and overload cut-out for electric motors
JPS57196306A (en) Sequence controller
GB1043595A (en) Overheating and earth-fault protection system for electric motors and transformers
JPS51140104A (en) Winding of three-phase electric machinery
SU1187109A2 (en) Apparatus for automatic testing of electric parameters of cables and bundled conductors

Legal Events

Date Code Title Description
ST Notification of lapse