1 Subject Content and Application Scope
1.1 This standard specifies the basic technical requirements for electric and electronic products for communication, detection and control in coal mine (hereinafter referred to as "products").
1.2 This standard is applicable to:
a. Communication and signal system and equipment in coal mine;
b. Monitoring, controlling and regulating systems, equipment and instruments for the infrastructure construction, production process and environment in coal mine;
e. Measure and control equipment and instrument for the electromechanical equipment in coal mine.
Contents
1 Subject Content and Application Scope
2 Normative References
3 General Requirements
4 Environmental Condition
5 Application Performance
6 Appearance
7 Structure
8 Electric Clearance and Creepage Distance
9 Main Spare Parts and Components
10 Temperature Rise
11 Electrical Safety
12 Stability
13 Explosion-proof Performance
14 Marks
Appendix A Selection of Severe Class Under Particular Environmental Conditions
Appendix B Influence of Altitude to the Product Temperature Rise and Insulation Electrical Strength
Appendix C Tests For Explosion-Proof and Ordinary Products for Coal Mine
