CH414011A - Circuit arrangement for determining the sign of the phase shift between two electrical quantities, in particular for determining the direction of energy in network protection devices - Google Patents
Circuit arrangement for determining the sign of the phase shift between two electrical quantities, in particular for determining the direction of energy in network protection devicesInfo
- Publication number
- CH414011A CH414011A CH1077464A CH1077464A CH414011A CH 414011 A CH414011 A CH 414011A CH 1077464 A CH1077464 A CH 1077464A CH 1077464 A CH1077464 A CH 1077464A CH 414011 A CH414011 A CH 414011A
- Authority
- CH
- Switzerland
- Prior art keywords
- determining
- sign
- energy
- phase shift
- circuit arrangement
- 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
- H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
- H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1963S0087101 DE1273685B (en) | 1963-09-05 | 1963-09-05 | Circuit arrangement for determining the sign of the phase shift between two electrical alternating quantities, preferably for determining the direction of energy in network protection devices |
Publications (1)
Publication Number | Publication Date |
---|---|
CH414011A true CH414011A (en) | 1966-05-31 |
Family
ID=7513502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1077464A CH414011A (en) | 1963-09-05 | 1964-08-18 | Circuit arrangement for determining the sign of the phase shift between two electrical quantities, in particular for determining the direction of energy in network protection devices |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH414011A (en) |
DE (1) | DE1273685B (en) |
SE (1) | SE323130B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4703387A (en) * | 1986-05-22 | 1987-10-27 | Franklin Electric Co., Inc. | Electric motor underload protection system |
USRE33874E (en) * | 1986-05-22 | 1992-04-07 | Franklin Electric Co., Inc. | Electric motor load sensing system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB899085A (en) * | 1959-03-12 | 1962-06-20 | British Telecomm Res Ltd | Improvements in or relating to electrical phase sensing circuits |
-
1963
- 1963-09-05 DE DE1963S0087101 patent/DE1273685B/en active Pending
-
1964
- 1964-08-18 CH CH1077464A patent/CH414011A/en unknown
- 1964-09-04 SE SE10661/64A patent/SE323130B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
SE323130B (en) | 1970-04-27 |
DE1273685B (en) | 1968-07-25 |
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