FR806521A - Polyphase voltage relay - Google Patents

Polyphase voltage relay

Info

Publication number
FR806521A
FR806521A FR806521DA FR806521A FR 806521 A FR806521 A FR 806521A FR 806521D A FR806521D A FR 806521DA FR 806521 A FR806521 A FR 806521A
Authority
FR
France
Prior art keywords
voltage relay
polyphase voltage
polyphase
relay
voltage
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
Other languages
French (fr)
Inventor
Piero Martinetto
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 filed Critical
Application granted granted Critical
Publication of FR806521A publication Critical patent/FR806521A/en
Expired legal-status Critical Current

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
FR806521D 1936-05-12 1936-05-15 Polyphase voltage relay Expired FR806521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM134481D DE672130C (en) 1936-05-12 1936-05-12 Rotating field voltage ferrari relay

Publications (1)

Publication Number Publication Date
FR806521A true FR806521A (en) 1936-12-18

Family

ID=7333038

Family Applications (1)

Application Number Title Priority Date Filing Date
FR806521D Expired FR806521A (en) 1936-05-12 1936-05-15 Polyphase voltage relay

Country Status (2)

Country Link
DE (1) DE672130C (en)
FR (1) FR806521A (en)

Also Published As

Publication number Publication date
DE672130C (en) 1939-02-22

Similar Documents

Publication Publication Date Title
FR826475A (en) Electromagnetic relay
FR830155A (en) Electronic relay devices
FR839810A (en) Contactor relay
FR825168A (en) Electrical switches
FR806521A (en) Polyphase voltage relay
FR751634A (en) AC relay
FR827235A (en) Wiper
FR783676A (en) Electric relays
FR727887A (en) Polyphase voltage relay
FR822183A (en) Relay
FR708878A (en) Improvements to AC relays
FR821289A (en) Contactor
FR823708A (en) Improvement in thermoelectric relays
FR834427A (en) Relay
FR731607A (en) Polarized relay
FR800348A (en) Improvements to contactor relays
FR826287A (en) Wiper
FR828505A (en) Light switch
FR774337A (en) Improvements to resonance relays
FR774066A (en) Three-phase differential relay
FR819679A (en) Improvements in relays
FR803440A (en) Improvements in relays
FR822181A (en) Breaker
FR812105A (en) Relay insensitive to asymmetric currents
FR802263A (en) Improvements to AC relays