CH289178A - Uberwachungsvorrichtung sowohl für verhältnismässig geringe als auch für verhältnismässig grosse Spannungsänderungen. - Google Patents

Uberwachungsvorrichtung sowohl für verhältnismässig geringe als auch für verhältnismässig grosse Spannungsänderungen.

Info

Publication number
CH289178A
CH289178A CH289178DA CH289178A CH 289178 A CH289178 A CH 289178A CH 289178D A CH289178D A CH 289178DA CH 289178 A CH289178 A CH 289178A
Authority
CH
Switzerland
Prior art keywords
monitoring device
voltage changes
large voltage
relatively
relatively large
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH289178A publication Critical patent/CH289178A/de

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
    • H02H3/34—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 of a three-phase system
    • H02H3/353—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 of a three-phase system involving comparison of phase voltages
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
    • H02H1/0046—Commutating the detecting means in dependance of the fault, e.g. for reducing their number
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
CH289178D 1950-03-21 1951-03-19 Uberwachungsvorrichtung sowohl für verhältnismässig geringe als auch für verhältnismässig grosse Spannungsänderungen. CH289178A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL152434 1950-03-21

Publications (1)

Publication Number Publication Date
CH289178A true CH289178A (de) 1953-02-28

Family

ID=19750489

Family Applications (1)

Application Number Title Priority Date Filing Date
CH289178D CH289178A (de) 1950-03-21 1951-03-19 Uberwachungsvorrichtung sowohl für verhältnismässig geringe als auch für verhältnismässig grosse Spannungsänderungen.

Country Status (6)

Country Link
US (1) US2601473A (is")
BE (1) BE501992A (is")
CH (1) CH289178A (is")
DE (1) DE858716C (is")
GB (1) GB678140A (is")
NL (1) NL81111C (is")

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914704A (en) * 1955-10-31 1959-11-24 Gilfillan Bros Inc Abnormal voltage protection circuit
US2951188A (en) * 1956-01-10 1960-08-30 Ite Circuit Breaker Ltd High speed contacting device
US3048746A (en) * 1958-03-04 1962-08-07 English Electric Co Ltd Electrical protective relays using double rectified bridge comparators
US3001101A (en) * 1958-03-04 1961-09-19 English Electric Co Ltd Electrical protective relays
US3108205A (en) * 1958-05-02 1963-10-22 Burroughs Corp Voltage sensing control circuit
US3426274A (en) * 1964-11-19 1969-02-04 Western Reserve Electronics In Diode bridge protection circuits for electrical measuring instruments employing the diode forward drop threshold voltage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798687A (en) * 1925-09-03 1931-03-31 Bbc Brown Boveri & Cie Electric relay apparatus
US2462212A (en) * 1944-11-06 1949-02-22 Matthews W N Corp Protective switch
US2520792A (en) * 1948-11-17 1950-08-29 Ite Circuit Breaker Ltd Multirange overcurrent relay

Also Published As

Publication number Publication date
DE858716C (de) 1952-12-08
US2601473A (en) 1952-06-24
BE501992A (is")
GB678140A (en) 1952-08-27
NL81111C (is")

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