CSA M421 : 2011 : R2016
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
View Superseded by
USE OF ELECTRICITY IN MINES
Hardcopy , PDF
03-09-2017
English
01-01-2016
Preface
1 Scope
2 Reference publications
3 Definitions
4 General requirements
5 Surface mines and quarries
6 Underground mines
7 Underground coal mines
Annex A (informative) - Ground potential rise and ground-fault
voltage
Annex B (informative) - Overhead supply line clearances
Annex C (informative) - Mine hoists
Annex D (informative) - Maintenance
Annex E (informative) - Electrical installations in ammonium
nitrate fuel oil (ANFO) areas
Annex F (informative) - Options for equipment control power
Annex G (informative) - Equipment protection levels and
methods of explosion protection for underground
coal mines
Annex H (informative) - Underground coal mine ac system
grounding considerations
Annex I (informative) - Flame test ratings
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