Power Switchboard

Also found in: Acronyms.

power switchboard

[′pau̇·ər ′swich‚bȯrd]
Part of a switch gear which consists of one or more panels upon which are mounted the switching control, measuring, protective, and regulatory equipment; the panel or panel supports may also carry the main switching and interrupting devices together with their connection.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Power Switchboard


a unit containing a set of interconnected electrical equipment and instruments mounted as a structural unit on a rack, switchboard, or panel with the purpose of receiving and distributing electric power at electric power stations and step-down substations and at industrial shops.

High-voltage power switchboards as a rule contain circuit breakers, a feeder breaker, metering assemblies, and sets of protective relays. The feeder breaker is mounted on a roll-out dolly to facilitate inspection and repairs. Low-voltage power switchboards contain link cutouts, knife switches, fuses, automatic circuit breakers, and sets of meters and protective apparatus. The operation of the unit is monitored by meters, protective devices, and signal lamps, all mounted on the front panel, along with the control levers and buttons. Power switchboards can switch circuits both under rated operating conditions and during short circuits. For safety during inspection and repair, a unit is equipped with an automatic block system that is triggered when the housing is opened or the cell is pulled out.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Three parts are EV charge power switchboard system, control system, and smart EV charge schedule engine system as illustrated in Fig.
EV charge power switchboard system is designed to conduct to distribute EV charge power to each charge port.
Control system is located between EV charge power switchboard system and smart EV charge schedule engine system.
Smart EV charge system main parts, EV charge power switchboard system, control system, and smart EV charge schedule engine, use two methods to communicate.
EV charge power switchboard consits of power switchboard core and EV charge power distribution core.
After power switchboard core receives the translated data, it commands each EV charge port how much and long to charge EV.
The server communicates with EV charge power switchboard system by using TCP/IP, and the client communicates with smart EV charge schedule engine system by using HTTP RESTful.
EV charge power distribution core communicates with power switchboard core by using local TCP/IP network.
Power switchboard core is implemented on the same with EV charge power distribution core, however, it uses C#.
The company suspects a problem at a makeshift power switchboard caused the suspension of the cooling system.