Reducing Arc-Flash with Resistance Grounding
How to modify your electrical system to eliminate 95% of Arc-Flash events
Learn How To:- Identify hazardous conditions caused by ground faults
- Significantly reduce Arc-Flash Hazards with resistance grounding
- Convert a solidly grounded or ungrounded system to resistance grounded
- Maintain operations while preventing electrical faults
- Plant Managers & Plant Electrical Safety Managers
- Electrical Maintenance Managers & Electrical System Designers
- Electrical Contractors with Industrial Clients
The electrical industry is reevaluating strategies that prevent Arc Flash. Long used in mines, petro-chem, and other heavy industrial plants, resistance grounding has won converts in general industry. This proven systemic approach eliminates phase-to-ground Arc Flash incidents throughout an entire system.
Most Arc Flash events, even phase-to-phase, begin as ground faults. If the neutral point of a transformer connects to earth ground via a power resistor, the resistance limits phase-to-ground current to just a few amps; not enough to cause downtime by tripping the overcurrent protection device, and not enough to allow an Arc Flash hazard to occur. As a result this approach eliminates 95% of all Arc Flash incidents, according to IEEE.
Tony Locker, P.E. of Littelfuse is the presenter of this Webcast moderated by Plant Engineering's editor Bob Vavra.
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