GB305221A - Improvements in or relating to the distribution of electric power at the working face of mines and similar workings - Google Patents
Improvements in or relating to the distribution of electric power at the working face of mines and similar workingsInfo
- Publication number
- GB305221A GB305221A GB3306/29A GB330629A GB305221A GB 305221 A GB305221 A GB 305221A GB 3306/29 A GB3306/29 A GB 3306/29A GB 330629 A GB330629 A GB 330629A GB 305221 A GB305221 A GB 305221A
- Authority
- GB
- United Kingdom
- Prior art keywords
- branch
- main cable
- working face
- voltage release
- circuit
- 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
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/001—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect or interrupted earth connection
Landscapes
- Keying Circuit Devices (AREA)
Abstract
305,221. Siemens - Schuckertwerke Akt-Ges. Feb. 3, 1928, [Convention date]. Installation conductor arrangements; protective arrangements. - Electrical energy is supplied at the working face of mines and the like by a main cable which is laid at the working face and to which apparatus is connected through short branch cables, the main cable being capable of disconnection at a gallery switch. The main cable 16 is divided into lengths which may be connected together by plugs and sockets 20 and by branch plugs 21 to which the branch cables leading to the machines 23 are connected. The main cable is connected to the mains 11 through a gallery switch 12 which comprises overload releases 13 and a voltage release 14. The circuit of the latter is fed through a transformer 15 and includes an auxiliary conductor 17 and earth conductor 19 comprised in the main cable. The branch plugs 21 include overhead releases 24 and a voltage release 25 the contacts of which are in the circuit of the gallery voltage release 14. 'The circuit of each voltage release 25 is completed through auxiliary conductors in the branch cable and the casing of the motor or machine switch. The contacts 27 of the voltage release are normally controlled so that the whole system at the working face may be rendered dead from any branch plug, and they may also be held closed by mechanical locks until the circuit is re-established when resumed operation is desired. Reference has been directed by the Comptroller to Specification 285,182, [Class 38 (v), Electric switches &c.].
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE305221X | 1928-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB305221A true GB305221A (en) | 1930-02-13 |
Family
ID=6120766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3306/29A Expired GB305221A (en) | 1928-02-03 | 1929-01-31 | Improvements in or relating to the distribution of electric power at the working face of mines and similar workings |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR668891A (en) |
| GB (1) | GB305221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971593C (en) * | 1951-08-07 | 1959-02-26 | Licentia Gmbh | Protection device for line sections for connecting portable power consumers |
| GB2174560A (en) * | 1985-04-26 | 1986-11-05 | David William Farley | Electrical supply system |
-
1929
- 1929-01-31 GB GB3306/29A patent/GB305221A/en not_active Expired
- 1929-02-02 FR FR668891D patent/FR668891A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971593C (en) * | 1951-08-07 | 1959-02-26 | Licentia Gmbh | Protection device for line sections for connecting portable power consumers |
| GB2174560A (en) * | 1985-04-26 | 1986-11-05 | David William Farley | Electrical supply system |
| GB2174560B (en) * | 1985-04-26 | 1989-06-28 | David William Farley | Electrical supply system for a central heating system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR668891A (en) | 1929-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE7908303L (en) | ELECTRICAL CONNECTOR DEVICE | |
| ES436091A1 (en) | Apparatus for the remote grounding, connection and disconnection of high voltage electrical circuits | |
| ES435409A1 (en) | Electrically insulated power line for supplying electrical energy to mobile devices | |
| GB1531913A (en) | Two pole ground fault circuit interrupter | |
| GB305221A (en) | Improvements in or relating to the distribution of electric power at the working face of mines and similar workings | |
| ES236728U (en) | Electrical connector | |
| GB675111A (en) | Improvements in and relating to bus-bar assemblies and connector units therefor, for electric power distribution | |
| GB1469314A (en) | Electrical cable monitoring circuitry | |
| CN208608392U (en) | Quick electric power switching device | |
| GB209831A (en) | Improvements in or relating to the earthing of electrical apparatus | |
| GB721684A (en) | Improvements relating to switch and fuse units for electric installations | |
| GB539118A (en) | Improvements in electric wiring systems and devices for use therein | |
| ES456001A1 (en) | Connecting device for achieving the electrical junction and mechanical assembly of at least two conductors | |
| AT190569B (en) | Machine for attaching connectors, in particular cable lugs, to electrical conductors | |
| SU86375A1 (en) | Switchgear with two bus systems | |
| SU845115A1 (en) | Device for testing integrity of earthing circuit of movable electric power generating installations | |
| GB988662A (en) | A contact for internal screens of electric insulators | |
| GB538219A (en) | Improvements in flameproof electric switchgear | |
| CN103956665A (en) | Outgoing breaker insulated isolation device of 10 KV combined box transformer substation | |
| GB584414A (en) | Improvements relating to systems of electrical distribution | |
| SU2014A1 (en) | Method of protecting portable electrical installations from hazards associated with the grounding of one of the phases | |
| GB693852A (en) | Improvements relating to dynamo electric machines | |
| GB681899A (en) | Improvements in or relating to electric high tension cable installations | |
| GB542420A (en) | Improvements in electrical switchgear equipments having isolating arrangements | |
| AU150073B2 (en) | Improvements in or relating to methods and means for soldering armature conductors tothe commutator segments of dynamo electric machines |