DE7330738U - Contactor for intrinsically safe circuits - Google Patents

Contactor for intrinsically safe circuits

Info

Publication number
DE7330738U
DE7330738U DE19737330738 DE7330738U DE7330738U DE 7330738 U DE7330738 U DE 7330738U DE 19737330738 DE19737330738 DE 19737330738 DE 7330738 U DE7330738 U DE 7330738U DE 7330738 U DE7330738 U DE 7330738U
Authority
DE
Germany
Prior art keywords
contactor
intrinsically safe
safe circuits
circuits
feedback
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.)
Expired
Application number
DE19737330738
Other languages
German (de)
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.)
STEINFURTH T GmbH
Original Assignee
STEINFURTH T GmbH
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 STEINFURTH T GmbH filed Critical STEINFURTH T GmbH
Priority to DE19737330738 priority Critical patent/DE7330738U/en
Publication of DE7330738U publication Critical patent/DE7330738U/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements

Landscapes

  • Road Signs Or Road Markings (AREA)

Description

Kontaktgeber liir eigensicnere StromkreiseContactor for own circuits

Die Neuerung "besieht sich auf einen Kontaktgeber für eigensichere Stromkreise,The innovation "looks at a contactor for intrinsically safe Circuits,

In den Schlagwetter- und explosionsgefährdeten Betrieben von Steinkohlenbergbau und Chemie v/erden in großem I-iaße eigensichere Betriebsmittel verwendet, um die Kosten für die sonst erforderlichen druckfest gekapselten G-eräte einzusparen. Hierzu gehören auch Kontaktgeber, d.h. also Schaltgeräte, mit deren Hilfe Schaltbefehle gegeben, z.Bo Notare eingescnaltet werden. Oa in der Pegel zwischen Kontaktgeber und Motor ein größerer '.bstand besteht, ist es dem Bedienenden nicht möglich, festzustellen, ob nun der Motor tatsächlich ein- bzw« ausgeschaltet wurde oder nicht, wobei vor allem letzterer Betriebsfall vom Standpunkt der Sicherheit h,r besonders bedeutsam ist. Man kann zwar eine Rückmeldung mit Hilfe T^on Signallampen oder Anzeigeinstrumenten verwirklichen, die aber nur dann durchführbar ist, wenn der Kontaktgeber Bestandteil eines größeren Steuerpultes ist, in dem auch Platz für die Rückmeldegeräte vorhanden ist.In coal mining and chemical companies that are at risk of firedamp and explosion, intrinsically safe equipment is used to a large extent in order to save the costs of the otherwise required flameproof devices. This also includes contactors, i.e. switching devices with the help of which switching commands are given, e.g. notaries are switched on. Oa there is a greater distance between the contactor and the motor, it is not possible for the operator to determine whether the motor has actually been switched on or off or not, the latter operating case in particular from the point of view of safety is particularly significant. You can realize a feedback with the help of T ^ on signal lamps or display instruments, but this is only feasible if the contactor is part of a larger control panel in which there is also space for the feedback devices.

Da diese Voraussetzung bei den in der Regel ortsveränderlichen Steuerungen untertage nicht gegeben ist, muß hier eine platzsparende.· ■-·? Lösung gefunden werden*Since this prerequisite is not met with the usually mobile controls underground, a space-saving one must be used here. ■ - ·? Solution to be found *

Sie besteht darin, daß neuerungsgemäß die Rückmeldeleuchten Bestandteil des Kontaktgebers sind» Hierfür sind Leuchtdioder. wegen ihr^r kleinen Ausmaße und ihres geringen Energiebedarfs besonders geeignet. Die technische Ausführung sieht dann z.B. so aus, daß in den an sich undurchsichtigen Deckel des Kontaktgebers kleine durchsichtige Kuppeln mit Aufnahmen für die Leuchtdioden eingesetzt werden. Die Stromversorgung der Leuchtdioden erfolgt vom Koppelglied her, welches die galvanische Trennung von eigensicherem und nicht eigensicherem Stromkreis besorgt.It consists in the fact that, according to the innovation, the feedback lights are part of the contactor. because of their small dimensions and their low energy consumption particularly suitable. The technical design then looks like, for example, that in the actually opaque cover of the contactor small transparent domes with receptacles for the light-emitting diodes are used. The power supply of the light emitting diodes takes place from the coupling link, which provides the galvanic separation of intrinsically safe and non-intrinsically safe circuits.

Claims (1)

SctLutzanspruchLegal entitlement 1. Kontaktgeter für eigensichere Stromkreise, dadurch gekennzeichnet, daß die Rückmeldeleuchten Bestandteil des Kontakt gehers sind.1. Kontaktgeter for intrinsically safe circuits, characterized in that that the feedback lights are part of the contact walker. 2, Kontaktgeber wie vor, gekennzeichnet durch Leuchtdioden als Rückmeldeleuchten.2, contactor as before, marked by light-emitting diodes as Feedback lights.
DE19737330738 1973-08-23 1973-08-23 Contactor for intrinsically safe circuits Expired DE7330738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19737330738 DE7330738U (en) 1973-08-23 1973-08-23 Contactor for intrinsically safe circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19737330738 DE7330738U (en) 1973-08-23 1973-08-23 Contactor for intrinsically safe circuits

Publications (1)

Publication Number Publication Date
DE7330738U true DE7330738U (en) 1974-03-21

Family

ID=6640275

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19737330738 Expired DE7330738U (en) 1973-08-23 1973-08-23 Contactor for intrinsically safe circuits

Country Status (1)

Country Link
DE (1) DE7330738U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517932A1 (en) * 1991-06-10 1992-12-16 Siemens Aktiengesellschaft Luminous contrast areas for emergency shutdown control switches in dark spaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517932A1 (en) * 1991-06-10 1992-12-16 Siemens Aktiengesellschaft Luminous contrast areas for emergency shutdown control switches in dark spaces

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