| As part of ABB's restructuring of their meter line, the D5 series of polyphase meters was simplified. The D5A series of polyphase A-base meters was dropped due to utilities upgrading A-base installations with socket adapters or replacing with new meter sockets. Also, demand registers were dropped as an option due to strong customer preference for the Alpha meter in demand applications. Lastly, the polycarbonate cover that was optional on the D5 polyphase meters became standard on the ABS meters. This line of models was finally discontinued in 2008 in favor of Elster's line pf Alpha electronic polyphase meters. |
 Photo by David Uy |