GB1135550A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1135550A – Improvements in or relating to electric circuit arrangements providing earth leakage protection
– Google Patents

GB1135550A – Improvements in or relating to electric circuit arrangements providing earth leakage protection
– Google Patents
Improvements in or relating to electric circuit arrangements providing earth leakage protection

Info

Publication number
GB1135550A

GB1135550A
GB48394/67A
GB4839467A
GB1135550A
GB 1135550 A
GB1135550 A
GB 1135550A
GB 48394/67 A
GB48394/67 A
GB 48394/67A
GB 4839467 A
GB4839467 A
GB 4839467A
GB 1135550 A
GB1135550 A
GB 1135550A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
earth leakage
stable
scr2
Prior art date
1967-10-25
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
GB48394/67A
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.)

Individual

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.)
1967-10-25
Filing date
1967-10-25
Publication date
1968-12-04

1967-10-25
Application filed by Individual
filed
Critical
Individual

1967-10-25
Priority to GB48394/67A
priority
Critical
patent/GB1135550A/en

1967-11-17
Priority to US683845A
priority
patent/US3515942A/en

1967-11-30
Priority to FR130392A
priority
patent/FR93773E/en

1968-12-04
Publication of GB1135550A
publication
Critical
patent/GB1135550A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

H02H3/16—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 fault current to earth, frame or mass

H02H3/162—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 fault current to earth, frame or mass for ac systems

Abstract

1,135,550. Protective arrangements. G. A. D. GORDON. 25 Oct., 1967, No. 48394/67. Addition to 1,105,027. Heading H2K. The earth leakage protective arrangement of the main patent is provided with a bi-stable transistor circuit TR2, TR3 which normally completes the circuit for the coil 10 of a reed relay to maintain its contacts 9 closed. These contacts complete the triggering circuits of controlled rectifiers SCR1, SCR2 which are in series with the primary winding of a transformer 2 supplying a load 3. In the event of earth leakage, current flowing in the reactive impedance 7, C1, is filtered and rectified and biases, an amplifying transistor TR1 to conduction. This causes the bi-stable circuit to change its state so that the transistor TR3 ceases to conduct and the relay 9, 10 releases so that the controlled rectifiers SCR 1, SCR2 cease to conduct and interrupt the primary circuit. Interruption and restoration of the supply is necessary to cause the bi-stable circuit to reset to its initial condition, a capacitor C5 ensuring that more current flows initially to the base of the transistor TR3 to render this transistor conductive.

GB48394/67A
1966-12-09
1967-10-25
Improvements in or relating to electric circuit arrangements providing earth leakage protection

Expired

GB1135550A
(en)

Priority Applications (3)

Application Number
Priority Date
Filing Date
Title

GB48394/67A

GB1135550A
(en)

1967-10-25
1967-10-25
Improvements in or relating to electric circuit arrangements providing earth leakage protection

US683845A

US3515942A
(en)

1967-10-25
1967-11-17
Electrical circuit arrangements providing earth leakage protection

FR130392A

FR93773E
(en)

1966-12-09
1967-11-30

Improvements to electrical circuits comprising a transformer, for example power supply or isolation.

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB48394/67A

GB1135550A
(en)

1967-10-25
1967-10-25
Improvements in or relating to electric circuit arrangements providing earth leakage protection

Publications (1)

Publication Number
Publication Date

GB1135550A
true

GB1135550A
(en)

1968-12-04

Family
ID=10448455
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB48394/67A
Expired

GB1135550A
(en)

1966-12-09
1967-10-25
Improvements in or relating to electric circuit arrangements providing earth leakage protection

Country Status (3)

Country
Link

US
(1)

US3515942A
(en)

FR
(1)

FR93773E
(en)

GB
(1)

GB1135550A
(en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3700966A
(en)

1971-05-19
1972-10-24
Paul Morrow
Monitoring circuit for detecting leakage currents

US3893006A
(en)

1974-01-14
1975-07-01
Nordson Corp
High voltage power supply with overcurrent protection

US3917979A
(en)

1974-03-18
1975-11-04
Borg Warner
Protection circuit for an adjustable motorized hospital bed

IT1202828B
(en)

1977-06-23
1989-02-09
Boots Co Ltd

GROUND CONNECTION TEST CIRCUIT DEVICE

US4532568A
(en)

1983-01-28
1985-07-30
Kraus Sr Arthur A
Three-phase leakage protection by electronic control

US4797772A
(en)

1987-03-03
1989-01-10
Patton Electric Company, Inc.
Immersion detector circuit interrupter

US8611057B2
(en)

2008-09-09
2013-12-17
Inshore Holdings, Llc
LED module for sign channel letters and driving circuit

FR2969428B1
(en)

2010-12-21
2013-01-04
St Microelectronics Sa

ELECTRONIC SWITCH AND COMMUNICATION APPARATUS INCLUDING SUCH A SWITCH

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2027209A
(en)

1934-03-29
1936-01-07
Gen Electric
Control and protection of electric circuits

GB446299A
(en)

1934-11-13
1936-04-28
Kingsway Radio Ltd
Improvements relating to electrical protecting devices

US3168682A
(en)

1961-02-10
1965-02-02
Aston L Moore
Supervisory system

US3287636A
(en)

1962-07-24
1966-11-22
Charbonnages De France
Method and apparatus including condenser means for measuring the insulation from earth of electrical networks

1967

1967-10-25
GB
GB48394/67A
patent/GB1135550A/en
not_active
Expired

1967-11-17
US
US683845A
patent/US3515942A/en
not_active
Expired – Lifetime

1967-11-30
FR
FR130392A
patent/FR93773E/en
not_active
Expired

Also Published As

Publication number
Publication date

FR93773E
(en)

1969-05-16

US3515942A
(en)

1970-06-02

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