ABB's Low Voltage Products division has released TVOC-2, an updated version of the company's proprietary Arc Guard System that is designed to protect electrical equipment from electrical arc flashes.
TVOC-2 can detect faults in low- and medium-voltage switchgear. It can also disconnect the power provided to the arc within 30 to 50 milliseconds, preventing serious injury to personnel and damage to expensive equipment, ABB explains.
TVOC-2 is now UL listed, and when installed along with ABB's Emax circuit breakers, carries a functional safety rating of SIL-2 as certified by TUV Rheinland. The SIL-2 certification confirms that the TVOC-2 has achieved the standard required to protect both humans and equipment.
Additional upgrades to the TVOC-2 include pre-calibrated optical sensors and fiber-optic point sensors; a hardware-based self-monitoring system for critical functions; and wide-ranging input voltage ratings (100 V to 240 V AC and 100 V to 250 V DC).
