CH288007A - Differential electromagnetic relay for the protection of three-phase electrical machines. - Google Patents

Differential electromagnetic relay for the protection of three-phase electrical machines.

Info

Publication number
CH288007A
CH288007A CH288007DA CH288007A CH 288007 A CH288007 A CH 288007A CH 288007D A CH288007D A CH 288007DA CH 288007 A CH288007 A CH 288007A
Authority
CH
Switzerland
Prior art keywords
protection
electromagnetic relay
electrical machines
phase electrical
differential electromagnetic
Prior art date
Application number
Other languages
Italian (it)
Inventor
Italiano Antonio
Original Assignee
Italiano Antonio
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 Italiano Antonio filed Critical Italiano Antonio
Publication of CH288007A publication Critical patent/CH288007A/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency 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
    • H02H3/32Emergency 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
    • H02H3/34Emergency 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
    • H02H3/353Emergency 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
CH288007D 1950-12-20 1950-12-20 Differential electromagnetic relay for the protection of three-phase electrical machines. CH288007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH288007T 1950-12-20

Publications (1)

Publication Number Publication Date
CH288007A true CH288007A (en) 1952-12-31

Family

ID=4486042

Family Applications (1)

Application Number Title Priority Date Filing Date
CH288007D CH288007A (en) 1950-12-20 1950-12-20 Differential electromagnetic relay for the protection of three-phase electrical machines.

Country Status (1)

Country Link
CH (1) CH288007A (en)

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