Untitled Document

	APPLICATION NOTES VOLUME 2
ARC FLASH BASICS & CURRENT SENSOR SAFETY

Where do arc flash hazards occur?

A hazardous arc flash can occur in any electrical device, regardless of voltage, in which the energy is high enough to sustain an arc.

Potential places where this can happen include:
• Panel boards and switchboards
• Motor control centers
• Metal clad switch gear
• Transformers
• Motor starters and drive cabinets
• Fused disconnects
• Any place that can have equipment failure

What is an arc flash hazard?

Think of an arc flash as a short circuit through the air. In an arc flash incident, an enormous amount of concentrated radiant energy explodes outward from electrical equipment.

The explosion creates pressure waves and a superheated ball of gas that can severely burn a worker’s body and melt metal. The pressure waves can also propel loose material like molten metal, pieces of damaged equipment, tools and other objects, through the air.

CLICK HERE TO SEE 480V ARC FLASH DEMO

CLICK HERE TO REQUEST PRESET SENSOR SAMPLE

REDUCE RISKS BY VIRTUALLY ELIMINATING CALIBRATION IN ENERGIZED ENCLOSURES

Avoiding calibration in an energized enclosure is the best way to avoid arc flash when working with current sensors. Senva offers two models--Autoset and Preset—which both address this application issue.

Autoset^tmself-calibrates after installation using Senva’s 24sense^tm technology which adapts to system changes, such as air balancing.

Preset^tm uses a unique, patent pending, scaled adjustment which is set to the motor FLA. It is priced comparably to manually adjusted sensors, but saves up to $30 per point, because there is no need to return to the site to calibrate

Get all the facts at Senvainc.com.

SenvaTM Inc. - - Portland, Oregon - - www.senvainc.com - - 1-866-660-8664