case power equipment
case power equipmentPower quality is a term used to discuss events on electric power grids that can damage or disrupt sensisitive electronic devices. It is often useful to think of power quality as a compatibility problem: is the equipment connected to the grid compatible with the events on the grid, and is the power delivered by the grid, including the events, compatible with the equipment that is connected? Compatibility problems always have at least two solutions: in this case, either clean up the power, or make the equipment tougher. Ideally electric power would be supplied as a sine wave with the amplitude and frequency given by national standards (in the case of mains) or system specifications (in the case of a power feed not directly attached to the mains) with an impedance of zero ohms at all frequencies. No real life power feed will ever meet this ideal. It can deviate from it in the following ways (among others): Variations in the peak or rms voltage (both these figures are important to different types of equipment) When the rms voltage exceeds the nominal voltage by a certain margin, the event is called a "swell". A "dip" (in British English) or a "sag" (in American English - the two terms are equivalent) is the opposite situation: the rms volage is below the nominal voltage by a certain margin. Shop for Bargain Deals in Computers, Electronics, Software, Office Products, and More. Home candle making supplies wholesale dog grooming supplies global supply chain management paper party supplies retirement party supplies stationary supplies uk jb wholesale pet supplies zebra printer supplies power supply atx communion supplies solar power generators astec power supply ups power backup custom power supply din rail power supplies power option loan electric power generation computer backup power supply online dating services hosting services broadband service providers voip service providers jewish online dating services web site promotion services digital printing service car moving services domain name services digital print services internet web hosting service provider dialup service service management and dispatch software satellite phone services debt recovery services aircraft charter services direct mailing service hair replacement services web site development services call centre service criminal background check services printing service houston contract hosting service web appointment setting service service award pin |