protective relay

protective relay

[prə′tek·tiv ′rē‚lā]
(electricity)
A relay whose principal function is to protect service from interruption or to prevent or limit damage to apparatus.
References in periodicals archive ?
Michail Maniatakos , a research professor at the NYU Tandon School of Engineering and an assistant professor of electrical and computer engineering at NYU Abu Dhabi, will detail the discovery of a security flaw in the authentication mechanism of a legacy protective relay -- a component that responds to changes in flow across the grid to isolate electrical faults.
The project also includes adding new substation equipment, including a circuit breaker and new protective relay devices designed to remotely monitor operations.
USPRwire, Wed Mar 30 2016] Protective Relay Market by Voltage (High, Medium, and Low), by End-User (Utilities, Industries, Renewables, and Marine), and by Protection Mechanism (Feeder, Transmission Line, Motor, Transformer, Generator, Breaker, Capacitor Bank, and Busbar) - Global Trends and Forecasts to 2021
The program is aimed at training some of the most valued and specialized people who keep the nation's electrical grid up and running: protective relay technicians, substation electricians, field service engineers.
17 November 2014 - US turf and landscape maintenance equipment provider The Toro Company (NYSE:TTC) said it had finalised the USD227m (EUR181m) acquisition of the Boss professional snow and ice management business, previously owned by local protective relay and control panels specialist Northern Star Industries Inc.
ClickPress, Tue Jul 08 2014] A protective relay is a device designed to register over-current, over-voltage, reverse power flow, over- and under- frequency in order to avoid any major accidents and flashovers.
Department of Energy (DOE) researchers hacked into a replica of a power plant's control system, overriding the reconnection synchronism enforced by the generator's protective relay.
The messaging encourages power companies to donate protective relay discards to the ENOSERV Training Facility for educational use.
senior power system engineer, the mill chose to install a new type of protective relay from Schweitzer Engineering Laboratories (SEL), the SEL-311L Line Current Differential System, using their installed fiber-optic cable from plant to generating station.
The devices trip and close a circuit breaker through one of three methods: using a manual control switch mounted on the front panel, a signal from any protective relay device, or a remote signal through an interface with SCADA.
com/research/pz72zz/medium_and_high_vo) has announced the addition of GlobalData's new report "Medium and High Voltage Protective Relay - Global Market Size, Segmentation and Competitive Landscape Analysis to 2020" to their offering.
28 October 2014 - US turf and landscape maintenance equipment provider The Toro Company (NYSE:TTC) said it had agreed to buy the Boss professional snow and ice management business of local protective relay and control panels specialist Northern Star Industries Inc for some USD227m (EUR179m).

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