Electric power system protection

ELECTRIC POWER, SYSTEM PROTECTION, CONTROL, AND MONITORING OF... [Pg.415]

See also-. Climatic Effects Consumption Domestic Energy Use Electric Motor Systems Electric Power, Generation of Electric Power, System Protection, Control, and Monitoring of Electric Power Substations Electric Power Transmission and Distribution Systems Government and the Energy Marketplace Regulation and Rates for Electricity. [Pg.427]

Electric Power, System Protection, Control, and Monitoring of... [Pg.1290]

Recommended practice for electric power systems in commercial buildings (IEEE Grey Book) Recommended practice for protection and coordination of industrial and commercial power systems (IEEE Buff Book)... [Pg.399]

In electric power systems, it is essential to have permanent control of the power in electricity production, transportation, and consumption. Because of speed and reliability requirements, electric power systems were the first large systems to use a variety of automatic control devices for the protection of different parts of the system. [Pg.299]

The analysis and understanding of the operation of protection systems and the application of protective devices to power systems is wide ranging and complex. This section considers only the objectives of protection systems, discrimination and its importance to protection, and describes the most common types of relay used in industrial power systems. Many publications covering the subject of protection systems are available (e.g. Power System Protection, edited by the Electricity Council). [Pg.217]

A maintenance program should document all tests, inspections, and faults cleared by a main and feeder circuit breaker. Lack of such a program will reduce the reliability of the electrical equipment.Molded case circuit breakers require no internal maintenance. They should be inspected for broken casing and loose connections after they operate to clear a fault and should be replaced after they have operated to clear two faults. Feeder circuit breakers, especially older circuit breakers, should be exercised (repeatedly opened and closed) whenever possible.f" Part of the initial commissioning of an electrical power system must include testing of the ground fault protection. ... [Pg.1484]

AR394 1.118 Periodic testing of electric power and protection systems (Rev.3, ML003739468) (DG-1028,... [Pg.267]

II Protection by Multiple Fission Product Barriers Cr. 17 Electric power systems Cr.18 Inspection and testing of electric power systems... [Pg.310]

ELECTRIC POWER SYSTEM Clas I,II and III Electnc System CSAB290 5 The Class III system pow ers designated safety -related and economic equipm i protection loads pump motors, valv es etc) Normally Class IV power supplies the Class III power W. cn the Class IV system fails two redundant standby diesel generators provide Class ni power The ac Class II and dc Class I systems supply un-mtermptible power to the control and safety svstems... [Pg.170]

From Whitaker, J.C., Power system protection alternatives, in AC Power Systems Handbook, 2nd ed., CRC Press, Boca Raton, FL, 1999, p. 267. After Key, Lt. Thomas, The Effects of Power Disturbances on Computer Operation, IEEE Industrial and Commercial Power Systems Conference, Cincinnati, June 7,1978, and Federal Information Processing Standards Publication No. 94, Guideline on Electrical Power for ADP Installations, U.S. Department of Commerce, National Bureau of Standards, Washington, D.C., 1983. [Pg.30]

Periodic testing of electrical power and protection systems 76/06... [Pg.54]

FM Global. Property loss prevention data sheet 5-10, protective grounding for electric power systems and equipment. Norwood, MA FM Global 2003. [Pg.245]

This subsection should provide information relevant to the plant on the off-site electrical power systems. It should include a description of the off-site power systems, with emphasis on features for control and protection (breaker arrangements, manual and automatic disconnect switches) at the interconnection to the on-site power system. Special emphasis should be put on all design provisions used to protect the plant from off-site electrical disturbances and to maintain power supply to in-plant auxiliaries. Information on grid reliability should also be provided and any design specific provisions necessary to cope with frequent grid failures should also be described. [Pg.34]

Similarly, SPS is well positioned to benefit from the trend toward electric hybrid vehicles. The superior electrical tracking resistance of SPS (Rg. 15.10) is well suited for the connectors, terminal and fuse holders, etc., that are needed for this evolving market. With a CTl of 600V, SPS offers good protection against terminal-to-terminal short circuits and other benefits to the electronic architecture needed to integrate 600-V electrical power systems into vehicles. [Pg.330]

Varistor is an electrical device based on semiconductor materials used for protection against voltage spikes in the electric network, against overvoltage in electronic circuits of low voltage and electrical power systems [1,2]. [Pg.26]

These products are very sensitive and are best used in a controlled environment Electric power, along with suitable power line transient protection, is required Capacity range is limited, although this can be extended through the use of lever systems... [Pg.328]

Hot Work. The objective of a hot work standard is to prevent fires, explosions, and other causes of injury which might result from workplace ignition sources such as welding (qv), cutting, grinding, and use of electrically powered tools. The OSHA standards have specific requirements (36,94) for fire prevention and protection and a permit system. [Pg.100]

NFPA 111 Standard on Stored Electrical Energy Emergency and Standby Power Systems, 1996 edition. National Fire Protection Association, Quincy, MA. [Pg.154]

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