Specification for control and interlock circuits primarily associated with flameproof restrained plugs and sockets for use in coal mines
This British Standard specifies requirements for control and interlock circuits which are required to be intrinsically safe and which are primarily associated with the pilot contacts of flameproof restrained plugs and sockets for use in coal mines. Provision is made for the control circuit to operate in local or remote control. When a resistor proving system is provided the operational requirements are given in clause 6.
NOTE 1. Appendix A gives recommended operational requirements for equipment using a control circuit complying with this standard.
NOTE 2. The titles of the publications referred to in this standard are listed on the inside back cover.
| SDO | BSI: British Standards Institution |
| Document Number | 3101 |
| Publication Date | Dec. 31, 1986 |
| Language | en - English |
| Page Count | |
| Revision Level | |
| Supercedes | |
| Committee | W/- |