CA2028028A1 - Systeme a securite intrinseque - Google Patents

Systeme a securite intrinseque

Info

Publication number
CA2028028A1
CA2028028A1 CA 2028028 CA2028028A CA2028028A1 CA 2028028 A1 CA2028028 A1 CA 2028028A1 CA 2028028 CA2028028 CA 2028028 CA 2028028 A CA2028028 A CA 2028028A CA 2028028 A1 CA2028028 A1 CA 2028028A1
Authority
CA
Canada
Prior art keywords
voltage
circuits
conductor
power supply
current
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.)
Abandoned
Application number
CA 2028028
Other languages
English (en)
Inventor
Frederick L. Maltby
Felix J. Houvig
Leslie D. Horrocks
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.)
Drexelbrook Controls Inc
Original Assignee
Drexelbrook Controls Inc
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 Drexelbrook Controls Inc filed Critical Drexelbrook Controls Inc
Publication of CA2028028A1 publication Critical patent/CA2028028A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/008—Intrinsically safe circuits
    • 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
    • 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
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault

Landscapes

  • Emergency Protection Circuit Devices (AREA)
CA 2028028 1989-10-19 1990-10-19 Systeme a securite intrinseque Abandoned CA2028028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42413189A 1989-10-19 1989-10-19
US424,131 1989-10-19

Publications (1)

Publication Number Publication Date
CA2028028A1 true CA2028028A1 (fr) 1991-04-20

Family

ID=23681571

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2028028 Abandoned CA2028028A1 (fr) 1989-10-19 1990-10-19 Systeme a securite intrinseque

Country Status (3)

Country Link
CA (1) CA2028028A1 (fr)
DE (1) DE4033313A1 (fr)
GB (1) GB2238191A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4403961C2 (de) * 1994-02-04 1997-07-03 Hartmann & Braun Ag Speisesystem für einen eigensicheren Feldbus
CA2209725A1 (fr) * 1996-08-14 1998-02-14 M-I Drilling Fluids L.L.C. Systdme et methode de commande pour appareillage electrique
US6037857A (en) * 1997-06-06 2000-03-14 Allen-Bradley Company, Llc Serial data isolator industrial control system providing intrinsically safe operation
DE29819235U1 (de) * 1998-10-28 1999-12-09 Siemens Ag Gleichspannungsversorgungseinheit
DE10124683B4 (de) * 2001-05-18 2006-06-14 R. Stahl Schaltgeräte GmbH Leistungsbegrenzungsschaltung
DE10335203A1 (de) * 2003-07-30 2005-03-10 Flowtec Ag Service-Interface zum Anschluß an Feldgeräte der Prozeßautomation
DE102004063708B4 (de) * 2004-12-28 2010-12-16 Endress + Hauser Flowtec Ag Schaltung zur Spannungsbegrenzung
US7372397B2 (en) 2005-06-03 2008-05-13 Rosemount Tank Radar Ab Energy storage in a radar level gauge
GB201001867D0 (en) 2010-02-05 2010-03-24 Kitchener Renato Real time, non-disruptive, IEC61158-2 spur short circuit testing method for active device couplers
PT106221A (pt) * 2012-03-21 2014-04-11 Portugal Telecom Inovacao S A Dispositivo com proteção tripolar a inserir no ponto de fronteira, e que agrega em simultâneo a malha rc
US10680433B2 (en) * 2017-08-01 2020-06-09 Fisher-Rosemount Systems, Inc. Methods and apparatus for surge protection of a distributed control system component
DE102018100627B4 (de) * 2018-01-12 2019-10-10 Krohne Messtechnik Gmbh Elektrisches Gerät mit einer abgesicherten und einer ungesicherten Funktionseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1412036A (en) * 1972-04-06 1975-10-29 Foxboro Co Interface assembly in a process control system for use where there is a fire hazard
US3878434A (en) * 1973-12-10 1975-04-15 Leeds & Northrup Co Power-limiting electrical barrier device
DE2724176B2 (de) * 1977-05-27 1979-06-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Gleichstromversorgungssystem
US4412265A (en) * 1981-11-27 1983-10-25 Tokheim Corporation Intrinsic barrier
GB2139830B (en) * 1983-04-26 1987-01-07 Manufacturing Electrical Desig Power supply for use in inflammable atmospheres
DE3906621C2 (de) * 1989-03-02 1995-05-04 Hemscheidt Maschf Hermann Eigensichere Stromversorgungseinheit

Also Published As

Publication number Publication date
GB9022831D0 (en) 1990-12-05
GB2238191A (en) 1991-05-22
DE4033313A1 (de) 1991-06-13

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Legal Events

Date Code Title Description
FZDE Dead