ABB Introduces New Arc Guard System


ABB's low-voltage products division has released TVOC-2, a new version of its proprietary Arc Guard System, which is designed to protect electrical equipment in solar facilities and other applications from dangerous electrical arc flashes.

TVOC-2 features numerous upgrades and new functions to provide superior arc-flash protection, detecting faults in low- and medium-voltage switchgear and disconnecting the power provided to the arc within 30 to 50 milliseconds, the company says. 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.

In addition to achieving the functional safety design as approved through rigorous third-party testing and certification, the feature upgrades of TVOC-2 provide significant system enhancements, including pre-calibrated optical sensors and fiber optic point sensors, hardware-based self-monitoring systems for critical functions, wide-ranging input voltage ratings, and selective tripping of only the affected circuit breaker, the company adds.

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