BS 7202:1989
Current
The latest, up-to-date edition.
Specification for non-incendive low voltage control/interlock and low voltage earth fault monitoring circuits for use in mines
Hardcopy , PDF
English
02-28-1990
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Committees responsible
Foreword
Specification
1 Scope
2 Definitions
3 General
4 Non-incendive sparking
5 Enclosure protection
6 Segregation of low voltage control/interlock circuits
and low voltage earth fault monitoring circuits from
intrinsically safe circuits
7 Marking
Requirements to prevent incendive sparking in low voltage circuits used typically in motor starter units such as those complying with BS 5126.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 87/73479 DC (09/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard specifies requirements to prevent incendive sparking in low voltage circuits used typically in motor starter units in mines, such as those complying with BS 5126, for the following:
- control and interlocking purposes in association with a flexible cable fitted with restrained type plugs;
- detecting earth faults in the outgoing cable and connected load when the outgoing power circuits are de-energized.
NOTE 1. Operational aspects of control circuits are specified in BS 3101 and earth fault monitoring circuits in BS 5126.
NOTE 2. The titles of the publications referred to in this standard are listed on the inside back cover.
| BS 5126-1:1993 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for direct-on-line motor starters |
| BS 5126-2:1993 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for circuit breaker units |
| BS 5126-4:1993 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled transformers to power drilling machines |
| BS 6704:1996 | Code of practice for selection, installation and maintenance of intrinsically safe electrical equipment in coal mines |
| BS 5126-3:1993 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled lighting transformer units |
| BS 5620:1979 | Specification for 200 A flameproof restrained and bolted plugs and sockets for voltages not exceeding 1100 V, primarily for use in mining |
| BS 5126-3:1982 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled single phase lighting transformer units |
| BS 5501-7:1977 | Electrical apparatus for potentially explosive atmospheres Intrinsic safety \'i\' |
| BS 5126-4:1982 | Mining type flameproof supply and control units for use on systems up to 1100 V Specification for units to power drilling machines |
| BS 5501-1:1977 | Electrical apparatus for potentially explosive atmospheres General requirements |
| BS 5126-1:1974 | Specification for mining type flameproof supply and control units for use on systems up to 1100 V 160/250 A direct-on-line motor starters (for use on three-phase a.c. circuits) |
| BS 5126-2:1976 | Specification for mining type flameproof supply and control units for use on systems up to 1100 V 300 A circuit breaker units |
| BS 5125:1990 | Specification for 50 A 650 V flameproof, restrained and bolted plugs and sockets for use in coal mines |
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