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BS 787-4:1972
Specification for mining type flameproof gate-end boxes Gate-end drilling machines (for use on 3-phase a.c. circuits up to 650 V)
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Summary
Drilling machines;Marking;Temperature rise;Electric connectors;Transformers;Frequency changers;Rated frequencies;Rated voltage;Drilling (mineral extraction);Mining equipment;High-voltage tests;Electric enclosures;Endurance testing;Design;Rated current;Power transformers;Type testing;Electrical protection equipment;Gate-end boxes;Protected electrical equipment;Dry-type transformers;Electrical safety
Technical characteristics
| Publisher | British Standards Institution (BSI) |
| Publication Date | 01/25/1972 |
| Page Count | 18 |
| Themes | Electrical safety |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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