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Controls for the reclosers range from the original electromechanical systems to digital electronics with metering and SCADA functions. The ratings of reclosers run from 2.4–38 kV for load currents from 10–1200 A and fault currents from 1–16 kA. [7] [8] On a 3-phase circuit, a recloser is more beneficial than three separate fuse cutouts.
Electric power transmission through interconnectors using high-voltage direct-current (HVDC) involves usually two converter stations and a transmission line. Generally overhead lines are used, but an important class of HVDC projects use submarine power cables.
A 115 kV to 41.6/12.47 kV 5 MVA 60 Hz substation with circuit switcher, regulators, reclosers and control building at Warren, Minnesota. It shows elements of low-profile construction, with apparatus mounted on individual columns. A substation is a part of an electrical generation, transmission, and distribution system.
While the recloser does in fact help to break up distribution circuits into smaller, more manageable pieces, many protection schemes involving circuit breakers in distribution substations also apply reclosing to some extent, thus not "blacking out" the circuit and requiring a crew go to the station and reset a lockout.
The Quebec – New England Transmission (officially known in Quebec as the Réseau multiterminal à courant continu (RMCC) [1] and also known as Phase I / Phase II [2] and the Radisson - Nicolet - Des Cantons circuit, [3] and known in New England as the Northern Pass) is a long-distance high-voltage direct current (HVDC) line between Radisson, Quebec and Westford Road in Ayer, Massachusetts.
An HVDC converter station (or simply converter station) is a specialised type of substation which forms the terminal equipment for a high-voltage direct current (HVDC) transmission line. [1] It converts direct current to alternating current or the reverse. In addition to the converter, the station usually contains:
Two AC lines, one 138 kV and one 230 kV, running from Arnott substation in Delta to Vancouver Island Terminal in North Cowichan (the same points that HVDC Vancouver Island connects). Waypoints of these southern lines, which all consist of three overhead and two submarine cable sections are:
In 2011, Baldor was acquired by ABB Ltd of Switzerland in an all-cash deal of US$4.2 billion ($1.1 billion debt included). The company continued to operate as Baldor Electric Company A Member of the ABB Group. On March 1, 2018, Baldor Electric Company's name was dissolved into the ABB brand, becoming ABB across all of its locations.