BS 787-4:1972

$102.76

Specification for mining type flameproof gate-end boxes – Gate-end boxes for drilling machines (for use on 3-phase a.c. circuits up to 650 V)

Published By	Publication Date	Number of Pages
BSI	1972	18

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Categories: 29.130.20 - Low voltage switchgear and controlgear, BSI

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Description

This British Standard specifies requirements for flameproof gate-end boxes designed primarily for use in the mining industry, on 3-phase a.c. circuits up to 650 V, for controlling one or two electrically-operated drilling machines.

NOTE The titles of the British Standards referred to in this standard are listed on page ii.

For controlling electrically operated drilling machines. Service conditions; ratings, design, construction and means of protection; test requirements.

Additional information

Status	Confirmed
Pages	18
Publication Date	1972-01-25
ISBN	0 580 06867 6
Standard Number	BS 787-4:1972
Title	Specification for mining type flameproof gate-end boxes – Gate-end boxes for drilling machines (for use on 3-phase a.c. circuits up to 650 V)
Descriptors	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
Publisher	BSI
Committee	W/-
ICS Codes	29.130.20 - Low voltage switchgear and controlgear

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BS 787-4:1972

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