24 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 1 PowerFlex 7000 Drive Overview
ArcShield Technology
The PowerFlex 7000 drive with ArcShield™ technology significantly reduces
arc flash hazards and minimizes the risks that are associated with the operation
and maintenance of electrical equipment. ArcShield technology is available for
AFE Direct-to-Drive configurations and is designed to help protect employees
and minimize unplanned outages and downtime. The PowerFlex 7000 drive
system with ArcShield option is a fully integrated Allen-Bradley™
CENTERLINE™ controller and PowerFlex 7000 drive combination. This
safety feature redirects the energy from an arc flash event through the top of
the enclosure. Personnel protection is maintained while in front, at the side, or
behind the enclosure and when the low voltage control door is open.
The PowerFlex 7000 drive with ArcShield technology meets the following
safety standards:
• IEEE C37.20.7
• CSA C22.2 No. 22-11
• EEMAC G14-1
• IEC 62271-200 Annex AA
• IEC 62477-2 (DRAFT)
Arc resistant enclosures contain the pressure from an arc flash event using
reinforced support members, plates, and uses 12-gauge steel for all doors, sides,
roof, and back sheets.
Bolted MV doors with robust door hinges add to the security of the main
doors. An aluminum pressure relief vent on the roof opens to redirect the
pressure upwards. A plenum exhaust system, above the pressure relief vent,
channels the superheated gas, vaporized copper, and steel to a controlled
location.
Figure 16 - PowerFlex 7000 Drive with ArcShield Technology
Allen-Bradley
CENTERLINE
Controller
PowerFlex 7000 Variable
Frequency Drive
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