Electricity

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.

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 ...