GB1078549A - Overload (e.g. overcurrent or overvoltage) protection - Google Patents
Overload (e.g. overcurrent or overvoltage) protectionInfo
- Publication number
- GB1078549A GB1078549A GB1737866A GB1737866A GB1078549A GB 1078549 A GB1078549 A GB 1078549A GB 1737866 A GB1737866 A GB 1737866A GB 1737866 A GB1737866 A GB 1737866A GB 1078549 A GB1078549 A GB 1078549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thyristor
- resistor
- contacts
- relay
- overvoltage
- 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
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
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
-
- 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
- H02H3/08—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 excess current
- H02H3/10—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 excess current additionally responsive to some other abnormal electrical conditions
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
1,078,549. Protective arrangements. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 20, 1966 [April 20, 1965], No. 17378/66. Heading H2K. In a supply circuit including a power regulator or similar device S and a low-pass filter L, C, a relay Re responsive to over-current and overvoltage has its contacts 12 connected in series with a resistor R2 between one of the output conductors and the control electrode of a thyratron or thyristor D1 which is connected in series with a resistor R1 across the input conductors. When an excess current occurs the relay winding 11 is sufficiently energized to close the contacts 12 to render the thyristor D1 conducting. The current which now flows through the thyristor D1 and resistor R1 is sufficient to trip a circuit-breaker or to blow a fuse F1. Should the output voltage be excessive, a Zener diode D2 breaks down so that a winding 10 of the relay Re is energized to close the contacts 12.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE508865 | 1965-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1078549A true GB1078549A (en) | 1967-08-09 |
Family
ID=20265672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1737866A Expired GB1078549A (en) | 1965-04-20 | 1966-04-20 | Overload (e.g. overcurrent or overvoltage) protection |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1078549A (en) |
NO (1) | NO118930B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007095874A1 (en) * | 2006-02-23 | 2007-08-30 | Siemens Aktiengesellschaft | Overcurrent switching apparatus |
-
1966
- 1966-04-19 NO NO16263566A patent/NO118930B/no unknown
- 1966-04-20 GB GB1737866A patent/GB1078549A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007095874A1 (en) * | 2006-02-23 | 2007-08-30 | Siemens Aktiengesellschaft | Overcurrent switching apparatus |
JP2009527878A (en) * | 2006-02-23 | 2009-07-30 | シーメンス アクチエンゲゼルシヤフト | Overcurrent switchgear |
Also Published As
Publication number | Publication date |
---|---|
NO118930B (en) | 1970-03-02 |
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