BS 6907-4:1988

Committees responsible
Foreword
Section 1. General
1 Scope
Section 2. Winning, stacking and primary and
           secondary processing machinery
2 Protection against direct and indirect contact
3 External power supply systems
4 Self-contained power systems
5 Cable types
6 Control circuits and control devices
7 Emergency stopping and emergency devices
8 Provision for supply isolation
9 Potentially explosive atmospheres
10 Static electricity
11 Electrostatic precipitators
12 Radioactive sources
13 Rail-mounted equipment
14 Hazards from electromagnetic induction
Section 3. Deep-well submersible type pumps
15 Protection against direct and indirect contact
Section 4. Low signal level systems and
           communication systems
16 General
17 Assessment of general characteristics
18 Protection of personnel against the transfer of
   unsafe voltages
19 Protection of low signal level against the
   malfunction due to interference
Publications referred to

Guiding principles for installation and operation of electrical equipment to ensure safety of persons, livestock, property and the proper functioning of the plant.

This Part of BS 6907 gives recommendations for the safe and efficient installation of winning, stacking and primary and secondary processing machinery, pumps and low signal level and communication systems.

It both supplements and gives specific exemptions to the recommendations given in BS 6907-2 and BS 6907-3 and should, therefore, be read in conjunction with those Parts.

NOTE 1 A glossary of terms used in this standard is given in BS 6907-1.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.