CH449754A - Gerät zur automatischen Prüfung von Fehlerstrom- und Fehlerspannungsschutzschaltungen
- Google Patents
Gerät zur automatischen Prüfung von Fehlerstrom- und Fehlerspannungsschutzschaltungen
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Publication number
CH449754A
CH449754ACH398564ACH398564ACH449754ACH 449754 ACH449754 ACH 449754ACH 398564 ACH398564 ACH 398564ACH 398564 ACH398564 ACH 398564ACH 449754 ACH449754 ACH 449754A
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Application filed by Schutzapparate Paris & CofiledCriticalSchutzapparate Paris & Co
Publication of CH449754ApublicationCriticalpatent/CH449754A/de
H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Measurement Of Current Or Voltage
(AREA)
CH398564A1963-04-021964-03-26Gerät zur automatischen Prüfung von Fehlerstrom- und Fehlerspannungsschutzschaltungen
CH449754A
(de)