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the effects of an arc flash event once it occurs, is essential. Though there is not an arc resistant criterion set for MCCs, our arc resistant design is Underwriters Laboratories® (UL) witnessed in accordance to Institute of Electrical and Electronics Engineers (IEEE) C37.20.7 arc resistant standard for personnel protection.

There are two conditions: doors open and doors closed. With doors open, the same conditions that would apply to non-arc resistant gear apply. With doors closed and latched (bolted) shut, the arc resistant gear test effectively makes it equivalent to <1.2 cal/cm2. This brings up the same issue when you have multiple scenarios to consider.

CENTERLINE 2100 NEMA Low Voltage MCC. Our CENTERLINE® 2100 NEMA Motor Control Centers (MCCs) combine rugged durability and premium quality, and integrate control and power into one centralized package. ... Includes arc-resistant latches on all doors for pressure relief to keep the door latched to the MCC during an arcing fault; ... Procurement ...

Arc Flash and Coordination Study for this site as part of the bid process for this job? If neither, ... 13. Which exactly are the bullet resistant doors, if any? The note under the door schedule says BR ... 5C153 addendum no. 3 [bids] ...

instrument compartment doors). Why arc resistant switchgear ... • Dynamic Arc Flash Sentry (DAS). DAS employs the unique ... LV Arc Resistant switchgear with and without overhead plenum should be installed on a solid surface to maintain the arc ratings. Guide form specifications A. This section supplements Section 16435 – Low Voltage Switch