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In electric power distribution, a bus duct (also called busway) typically uses sheet metal, welded metal [1] or cast resin to contain and isolate copper or aluminium busbars for the purpose of conducting a substantial current of electricity. It is an alternative means of conducting electricity to power cables or cable bus.
Various forms of flexible terminals, expansion joints, and weatherproof or fire-proof bushings and terminals are used with isolated-phase bus. Some types of apparatus such as disconnecting switches, circuit breakers, and instrument transformers are made in enclosures that can be welded to become an integral part of the isolated-phase bus system.
In July 2020, ABB divested its power grid business and sold 80.1% of that to Hitachi Ltd., leading to the formation of Hitachi ABB Power Grids. [1] In October 2021, Hitachi ABB Power Grids changed its company name to Hitachi Energy. In December 2022, it was confirmed that Hitachi acquired the remaining 19.9 percent shares from ABB Ltd. [2]
Hitachi Rail STS SpA [5] (from Hitachi Rail Signalling and Transportation Systems) or Hitachi Rail STS (previously Ansaldo STS) is an Italian transportation company owned by Hitachi with a global presence in the field of railway signalling and integrated transport systems for passenger traffic (railway/mass transit) and freight operations.
A back-to-back station has no transmission line and joins two separate AC grids at a single point. Historical HVDC systems used the Thury system of motor-generators but these have all been made obsolete by later developments such as mercury-arc valves (now also obsolete), thyristors, and IGBT power transistors.
Hitachi Command Suite (formerly Hitachi Storage Command Suite) provides integrated storage resource management, tiered storage and business continuity software. [9] Hitachi Command Suite employs a use case-driven, step-by-step wizard-based approach that allows administrators to perform tasks such as new volume provisioning, configuration of external storage, and creation/expansion of storage ...
The British Rail Class 395 Javelin is a dual-voltage electric multiple-unit (EMU) passenger train built by Hitachi Rail as part of the Hitachi A-train AT300 family for high-speed commuter services on High Speed 1 and elsewhere on the South Eastern franchise. [9] [10] The whole fleet is operated by Southeastern.
Advanced security capabilities include Hitachi Data Retention Utility software with its “write once, read many” feature that protects data from overwrites or erasures for long periods of time. System management access limits authorization to change the system. System audit logging records all system changes.