BS EN 50281-1-2:1999:2002 Edition
$102.76
Electrical apparatus for use in the presence of combustible dust. Electrical apparatus protected by enclosures – Selection, installation and maintenance
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 16 |
Gives guidance on selection, installation and maintenance of electrical apparatus to be constructed in accordance with BS EN 50281-1-1.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | National foreword |
| 4 | Foreword Foreword to amendment A1 Contents |
| 5 | Introduction 1 Scope |
| 6 | 2 Normative references 3 Definitions 3.1 dust 3.2 combustible dust 3.3 conductive dust 3.4 explosive dust atmosphere 3.5 ignition temperature of a dust layer 3.6 ignition temperature of a dust cloud 3.7 dust ignition protection |
| 7 | 3.8 dust-tight enclosure 3.9 dust-protected enclosure 3.10 maximum surface temperature 3.11 maximum permissible surface temperature 4 Area classification 4.1 Zone 20 4.2 Zone 21 4.3 Zone 22 |
| 8 | 5 Selection of apparatus 6 Temperature limitation 6.1 Temperature limitations because of the presence of dust clouds 6.2 Temperature limitation because of the presence of dust layers |
| 9 | Figure 1 – Reduction in maximum permissible surface temperature for increasing depth of dust layers 6.3 Apparatus to be submitted to laboratory investigation |
| 10 | 6.4 Maximum permissible surface temperature 7 Selection of dust ignition protected apparatus 8 Selection of radiating equipment 8.1 Ignition process |
| 11 | 8.2 Safety measures in all Zones 9 Selection of ultrasonic equipment 9.1 Ignition process 9.2 Safety measures 10 Installation requirements 10.1 General 10.2 Access for inspection |
| 12 | 10.3 Plans and records 10.4 Installation of apparatus 10.5 Integrity of insulation 10.6 Isolation 11 Wiring systems 11.1 Types of wiring 11.2 Electrostatic build�up of charges 11.3 Dust collection 11.4 Entries |
| 13 | 11.5 Accessories 11.6 Course of wiring 11.7 Thermal rating 11.8 Barriers 11.9 Flexible connection 11.10 Metal conduit systems 11.11 Plastic conduit systems 11.12 Conduit system joints |
| 14 | 12 Inspection and maintenance 12.1 Qualifications of personnel 12.2 Isolation 12.3 Maintenance 12.4 Examination |
| 15 | Annex A (informative) Examples for dust layers with excessive thickness with the requirement of laborator… |
