Arc Flash & Electrical Safety News

Monday, June 08, 2009

Using Technology to Minimize the Arc-Flash Hazard

An article in the IAEI Magazine (International Association of Electrical Inspectors) discusses some of the technologies available to minimize arc flash hazards. The article focuses on current limiting devices and high resistance grounding. The final paragraph summarizes the article:

"High resistance grounding systems do not protect against the less frequent but still dangerous phase-to-phase or three-phase arcing faults. However, the combined use of high resistance grounding for protection from ground faults and its ability to prohibit the escalation of the fault and current-limiting fuses or current-limiting circuit breakers for phase-to-phase and three-phase arcing faults is an effective engineering approach to minimizing the arc-flash hazard."

You can read the entire article here.

Related past posts:
Understanding Ground Fault Protection
Electrical Safety In The Workplace
Preventing Arc Flash Injuries

Labels: Preventing Arc Flash Accidents, Understanding Arc Flash

posted by Steve Hudgik | This Arc Flash Post and 1 Comments |

1 Comments:

At 6:36 AM, Anonymous said...: The company I work for had an Arc Flash Study done by ********* about two years ago. We just had a major blast at one of our Category zero MCC's. It blew the doors open on the bucket. How can this happen? Has anyone ever seen a Category zero blow-up like this. We think that the label may be incorrect. The guy who came out to do the study did not get any wire sizes or measure anything. He basically just wrote down the names on the equipment covers. Help!