GB832972A - A protective arrangement for high-voltage power distribution systems - Google Patents
A protective arrangement for high-voltage power distribution systemsInfo
- Publication number
- GB832972A GB832972A GB55556A GB55556A GB832972A GB 832972 A GB832972 A GB 832972A GB 55556 A GB55556 A GB 55556A GB 55556 A GB55556 A GB 55556A GB 832972 A GB832972 A GB 832972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- relays
- transformers
- starting
- fault
- 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
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
- H02H1/0046—Commutating the detecting means in dependance of the fault, e.g. for reducing their number
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
832,972. Protective cut-out arrangements. ALLGEMEINE ELEKTRICITATS-G.m.b.H. Jan. 4, 1957 [Jan. 6, 1956], No. 555/56. Class 38 (5). In a three-phase system R, S, T, with a resistance-earthed neutral, a directional distance relay (indicated at A) is connected to the appropriate phase conductors under phase-fault and earth-fault conditions by starting relays connected in a star-connected current transformer arrangement, over-current starting relays St 1 ... St 3 being connected in series with the current transformers 1 ... 3 and an earth-fault starting relay St 4 being connected to the starconnection 7 by means of a transformer C which enables the relay St 4 to respond to small earthfault currents. The circuits controlled by the relay A may be supplied from a battery B (as shown) or from saturable transformers connected in series with the starting relays, Fig. 2 (not shown). In the latter case the saturable transformers may be connected to the relay by changeover contacts of the relays St 1 ... St 4 and an alternative supply from voltage transformers may be provided and controlled by under-voltage relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB55556A GB832972A (en) | 1956-01-06 | 1956-01-06 | A protective arrangement for high-voltage power distribution systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB55556A GB832972A (en) | 1956-01-06 | 1956-01-06 | A protective arrangement for high-voltage power distribution systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB832972A true GB832972A (en) | 1960-04-21 |
Family
ID=9706443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB55556A Expired GB832972A (en) | 1956-01-06 | 1956-01-06 | A protective arrangement for high-voltage power distribution systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB832972A (en) |
-
1956
- 1956-01-06 GB GB55556A patent/GB832972A/en not_active Expired
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