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Siemens-Duewag U2 LRV – Edmonton Transit System and Calgary Transit – Alberta, Canada; Siemens SD-160 – Edmonton Transit System and Calgary Transit – Alberta, Canada; LHB/Siemens M1/M2/M3 Metro (Pair) – Prague Metro Czech Republic; Siemens-Adtranz LRV; MX3000 Metro car for Oslo (SGP Wien works) – Oslo T-bane, Norway; CAF S4000 Metro ...
Blockschaltbild der digitalen Vermittlungsstelle EWSD. The Elektronisches Wählsystem Digital (EWSD), translated to Electronic Digital Switching System in English, is a widely installed German telephone exchange system, originally introduced in 1975 by Siemens AG, but discontinued in 2017.
The Siemens DCO (digital central office) electronic telephone switch was introduced in 1977 by Stromberg-Carlson, having been conceived by its new president, Leonard A. Muller, an ex IBM senior executive who infused Stromberg with his new digital awareness learned in IBM.
Stromberg-Carlson produced several unique switching systems, including: XY, a "flat motion" switch logically similar to Strowger switching.The "XY Selector" was not invented by SC, but licensed from L.M. Ericsson of Sweden in the late 1940s and re-engineered for U.S. switching applications (Ericsson used it for PABX and a very small Rural Exchange application).
Usually utilization category is mentioned in most of the switch gear, with the above contactor stating to be used under AC1 - resistive load & AC3 for motor usage. In electrical engineering utilization categories are defined by IEC standards [1] and indicate the type of electrical load and duty cycle of the loads to ease selection of contactors ...
Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...
The Vectron is designed to be easily reconfigurable to a variety of country or work specific configurations; reconfiguration to different safety systems is simplified with pre-designed mounting points for track equipment, modular safety equipment cabinets in the locomotive body [10] and a driver's desk designed for a wide variety of information equipment.
It includes in one unit two switches that can connect the load to either or both main conductors, and a fusible switch or circuit breaker and switch that feed a distribution transformer. [1] The metal enclosed unit connects to the transformer either through a bus throat of standardized dimensions, or else through cables and is usually installed ...
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