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Electricity
A database referring to the existence of a flow of electric charge.
Industry: Utilities
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Electricity
Protection system
Electrical equipment; Electricity
A combination of protection equipment designed to secure, under pre-determined conditions, usually abnormal, the disconnection of an element of a power system, or to give an alarm signal, or both.
Protective device numbers, ANSI
Electrical equipment; Electricity
2 Time-delay, 21 Distance, 25 Synchronism-check, 27 Undervoltage, 30 Annunciator, 32 Directional power, 37 Undercurrent or underpower, 38 Bearing, 40 Field, 46 Reverse-phase, 47 Phase-sequence ...
Protocol
Electrical equipment; Electricity
Protocols are communication standards set to facilitate the many connexions made by computers via modems and other digital connections. Some protocols are PPP, TCP/IP, SLIP, and FTP.
Proxy server
Electrical equipment; Electricity
A system that caches items from other servers to speed up access. On the web, a proxy first attempts to find data locally, and if it is not available, obtains it from the remote server where the data ...
Public switched telephone network (PSTN)
Electrical equipment; Electricity
Public Switched Telephone Network is the concentration of the world's public circuit-switched telephone networks. Originally a network of fixed-line analogue telephone systems, the PSTN is now almost ...
Pull tension
Electrical equipment; Electricity
The tension in pounds or kilogrammes required to pull a cable or wire into a duct or conduit or into an overhead location.