CH428943A - Frequenzrelais - Google Patents
FrequenzrelaisInfo
- Publication number
- CH428943A CH428943A CH1234065A CH1234065A CH428943A CH 428943 A CH428943 A CH 428943A CH 1234065 A CH1234065 A CH 1234065A CH 1234065 A CH1234065 A CH 1234065A CH 428943 A CH428943 A CH 428943A
- Authority
- CH
- Switzerland
- Prior art keywords
- frequency relay
- relay
- frequency
- Prior art date
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
- H02H3/46—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 frequency deviations
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US396314A US3337777A (en) | 1964-09-14 | 1964-09-14 | Frequency responsive device utilizing a saturable core reactor and scr means |
Publications (1)
Publication Number | Publication Date |
---|---|
CH428943A true CH428943A (de) | 1967-01-31 |
Family
ID=23566740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1234065A CH428943A (de) | 1964-09-14 | 1965-09-03 | Frequenzrelais |
Country Status (4)
Country | Link |
---|---|
US (1) | US3337777A (de) |
JP (1) | JPS4220811B1 (de) |
CH (1) | CH428943A (de) |
DE (1) | DE1513713A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3467835A (en) * | 1965-09-08 | 1969-09-16 | Warwick Electronics Inc | Remote control switch responsive to superimposed power line frequency |
US3703717A (en) * | 1971-01-11 | 1972-11-21 | Gte Automatic Electric Lab Inc | Voltage/frequency ratio monitor for a. c. signals |
US4475140A (en) * | 1983-02-25 | 1984-10-02 | Day Harry W | Switching amplifier with high impedance input |
EP2884233B1 (de) * | 2013-12-16 | 2021-09-01 | Eaton Intelligent Power Limited | Messgrößenerfassung im elektromagnetischen Antrieb eines Schaltgeräts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2483053A (en) * | 1948-01-21 | 1949-09-27 | Gunter H Isay | Remotely controlled receiver |
US2757320A (en) * | 1953-10-15 | 1956-07-31 | Westinghouse Electric Corp | Frequency sensitive control device |
US3075127A (en) * | 1960-09-26 | 1963-01-22 | Lear Siegler Inc | Alternating current frequency sensing and indicating circuit |
US3209212A (en) * | 1961-01-11 | 1965-09-28 | Westinghouse Electric Corp | Frequency responsive control device |
US3181032A (en) * | 1962-03-12 | 1965-04-27 | Collins Radio Co | Circuit overload responsive shutoff system with relay driving energy storage |
-
1964
- 1964-09-14 US US396314A patent/US3337777A/en not_active Expired - Lifetime
-
1965
- 1965-08-26 DE DE19651513713 patent/DE1513713A1/de active Pending
- 1965-09-03 CH CH1234065A patent/CH428943A/de unknown
- 1965-09-13 JP JP5577265A patent/JPS4220811B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4220811B1 (de) | 1967-10-17 |
US3337777A (en) | 1967-08-22 |
DE1513713A1 (de) | 1969-11-27 |
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