Number
A circuit-breaker in which the contacts open and close in air at atmospheric pressure.
A circuit-breaker in which the contacts open and close in air at atmospheric pressure.
An electric generator for the production of alternating current and voltage.
An electric motor driven by alternating electric current.
A dynamic pump that contains impellers provided with vanes to generate centrifugal force to achieve the required pressure head.
A mechanical switching device that at regular intervals interrupts an electric current.
A switchgear and controlgear that is an insulated panel carrying terminals, fuses, etc, for controlling a number of subsidiary electrical circuits.
A power transformer of which the magnetic circuit and windings are not immersed in an insulating liquid.
A resistance through which the neutral pint of a supply system is earthed, in order to limit the current that flows on the occurrence of an earth fault.
An electronic ac converter for changing the frequency.
An electronic ac converter for changing the frequency.
A circuit-breaker in which the arc develops in a blast of gas.
A circuit-breaker in which the arc develops in a blast of gas.
A circuit-breaker in which the contacts open and close in oil.
A circuit-breaker in which the contacts open and close in oil.
A switchgear and controlgear bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph, telephone, etc.
A physical object that is a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures.
A physical object that is a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures.
A transformer that, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency for the purpose of transmitting electrical power.
A circuit-breaker in which the contacts open and close within a highly evacuated envelope.
A circuit-breaker in which the contacts open and close within a highly evacuated envelope.
A physical object that consists of an electric motor and controller that is used to adjust the motor's operating speed.
A physical object that consists of an electric motor and controller that is used to adjust the motor's operating speed.
A power transformer of which the magnetic circuit and windings are immersed in oil.