24/05/2556 02:02 น. |
เรียนนำเสนอเกี่ยวกับบริการ Arc-Flash analysis ท่านจะทราบถึงขอบเขตอันตรายในการปฎิบัติงานทางด้านไฟฟ้าในโรงงาน ความรุนแรงของการอาร์ค และอันตรายที่เกิดจากการอาร์ด ในแต่ละพื้นที่การทำงานของท่าน ศึกษา-วิเคราะห์ให้ท่านตามมาตรฐาน IEEE 1584, NFPA70E-2009 Annex D. ท่านที่สนใจกรุณาติดต่อ charnchai.scn@hotmail.com |
24/05/2556 02:04 น. |
[color=darkred][/color] Charnchai 24/05/2556 01:46 น. Scope of Work(Example) for Arc Flash Hazard Analysis A. On-site Data Collection B. One-line Diagram and System Modeling C. Short-Circuit Study and Device Evaluation D. Protective Device Coordination Study E. Arc Flash Hazard Analysis Study F. Arc Flash Hazard Warning Labels G. Electrical Safety Inspection H. Electrical Safety & Arc Flash Training For More information please contact charnchai.scn@hotmail.com |
24/05/2556 02:05 น. |
Procedural Steps of Arc Flash Hazard Analysis by using IEEE std 1. Collect the system and installation Equipment Data 2.Determaine the power system's modes of operation 3.Determine the bolted fault currents 4.Determine the Arc Fault Current 5.From the Protective device characteristics, Find the arcing duration 6.Record the system voltages and the equipment classes 7.Determine working Distances 8.Determine incident Energy 9.Determine the Flash-Protection Boundary fir All Equipment For more information please contact charnchai.scn@hotmail.com |
24/05/2556 02:13 น. |
see Arc Flash hazardous click at http://www.youtube.com/watch?v=4bBvmPRqfmo |
24/05/2556 02:43 น. |
Arc Flash Hazard Area Question: A Qualified person is troubleshooting a motor starter which is part of a MCC. This person knows from a report of short circuit and coordination study that the magnitude of current for a bolted-fault at the main terminal of this MCC is 15KA and that the maximum time expected for clearing a fault of this magnitude is 0.5 second. the qualified person wants to start the motor with the starter-unit door open. what is the hazard risk category for this task ? |
24/05/2556 02:50 น. |
Arc Flash Hazard Area Question for you: A Qualified person is troubleshooting a motor starter which is part of a MCC. This person knows from a report of short circuit and coordination study that the magnitude of current for a bolted-fault at the main terminal of this MCC is 15KA and that the maximum time expected for clearing a fault of this magnitude is 0.5 second. the qualified person wants to start the motor with the starter-unit door open. what is the hazard risk category for this task ? If you don't know the answer for the above question... |