An Air Transport Rack (ATR) chassis is a rugged enclosure designed to house and protect electronic equipment, typically including communications and navigation systems, computing systems, power supplies and control systems. Medium-voltage switchgears are essential in the electrical network, from the energy delivery (HV-MV) up to its distribution. Air-insulated (AIS) medium-voltage switchgears, suggested for indoor installations, are used for several applications, such as: ATR is air-insulated medium-voltage switchgear. The Pixus Technologies ATRs come in convection cooled (forced-air), conduction cooled, and hybrid versions. Sizes from 1/2 ATR to 3/4 ATR are available with various backplane slot counts for CompactPCI, VME64x, OpenVPX (VITA 46, VITA 48, VPX-REDI, or custom designs. The ATR chassis are compliant. What does ATR stand for? Your abbreviation search returned 119 meanings Sort results: alphabetical | rank ? Note: We have 228 other definitions for ATR in our Acronym Attic 119 definitions of ATR. What does ATR stand for? ATR abbreviation. This image has specific dimensions, with a length of 669 pixels and a width of 350 pixels. The file size of the image is approximately 60 kilobytes. CRAC units are the traditional HVAC cooling systems for the data center.