GB1018281A - Improvements in and relating to electrical installations and to relay circuits therefor - Google Patents

Improvements in and relating to electrical installations and to relay circuits therefor

Info

Publication number
GB1018281A
GB1018281A GB30806/62A GB3080662A GB1018281A GB 1018281 A GB1018281 A GB 1018281A GB 30806/62 A GB30806/62 A GB 30806/62A GB 3080662 A GB3080662 A GB 3080662A GB 1018281 A GB1018281 A GB 1018281A
Authority
GB
United Kingdom
Prior art keywords
relay
predetermined value
current
load
coil
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
GB30806/62A
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.)
BERNARD HOLDSWORTH
Original Assignee
BERNARD HOLDSWORTH
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 BERNARD HOLDSWORTH filed Critical BERNARD HOLDSWORTH
Priority to GB30806/62A priority Critical patent/GB1018281A/en
Publication of GB1018281A publication Critical patent/GB1018281A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent

Abstract

1,018,281. Supply systems for consumption apparatus. B. HOLDSWORTH. Aug. 8, 1963 [Aug. 10, 1962], No. 30806/62. Heading H2H. An electrical installation wherein the current flow is prevented from rising above a predetermined value comprises two relays 15, 16 connected in parallel with one another and in series with a manually operable switch 19 and a load 22 the relay 15 being of the thermally operated type and of low impedance whilst the relay 16 is an electromagnetic relay and normally having a high impedance, the arrangement being such that when the current in the load 22 rises above the predetermined value, the thermal relay is operated to open contacts 26, 30 whereupon all the current passes through the coil 27 of relay 16 thus attracting the armature 29 to move the contact 30 away from contact 26 and at the same time increasing the impedance of the relay 16 to a value greater than that of the two relays together thereby limiting the load current to the predetermined value. The installation is returned to its normal condition by opening the manually operable switch 19. Alternatively the heater coil 24 of the relay 15 may be connected in series with the coil 27 of the relay 16.
GB30806/62A 1962-08-10 1962-08-10 Improvements in and relating to electrical installations and to relay circuits therefor Expired GB1018281A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30806/62A GB1018281A (en) 1962-08-10 1962-08-10 Improvements in and relating to electrical installations and to relay circuits therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30806/62A GB1018281A (en) 1962-08-10 1962-08-10 Improvements in and relating to electrical installations and to relay circuits therefor

Publications (1)

Publication Number Publication Date
GB1018281A true GB1018281A (en) 1966-01-26

Family

ID=10313424

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30806/62A Expired GB1018281A (en) 1962-08-10 1962-08-10 Improvements in and relating to electrical installations and to relay circuits therefor

Country Status (1)

Country Link
GB (1) GB1018281A (en)

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