BS 5754:1987

This standard BS 5754:1987 Specification for electrical analogue and state signals for use in coal mines is classified in these ICS categories:

• 29.020 Electrical engineering in general
• 73.020 Mining and quarrying

This British Standard specifies requirements for apparatus incorporating signal circuits intended to be certified intrinsically safe for use in coal mines and which have inputs or outputs, as appropriate, in the form of d.c. voltage analogue signals (type V), or state signals (type S).

It specifies those electrical input and output characteristics of signal sources and signal loads necessary to achieve operational compatibility and also to simplify design for compliance with the relevant standards for intrinsic safety.

Section 1 specifies the general requirements applicable to both types of signals. Sections 2 and 3 contain specific requirements for voltage analogue and state signals respectively.

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

Intended to promote compatibility between transducers, recorders, indicators and data transmission systems of different manufacture which are being used in systems to control and monitor below ground activities and conditions.