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AC Input
Electrical power in the form of  alternating current  (AC) supplied to the input of a power supply or power management system.
Alternating Current
In  alternating current  ( AC , also  ac ), the movement of electric charge periodically reverses direction and has alternately positive...
Commercial AC Power
Power furnished by an electric power utility company. When available, it is usually the prime  power source .
Direct Current
Direct current  ( DC ) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries,...
DSLAM
Digital subscriber line (DSL) refers to the family of technologies that enable high speed email and internet access by transmitting data...
Efficiency
The ratio of output power to input power expressed in percentage. High efficiency is important for two reasons. The input power...
Inverter
An  inverter  is an electrical device that converts  direct current  (DC) to  alternating current  (AC) The converted AC can be at...
IP Code
The IP Code (or Ingress Protection Rating, sometimes also interpreted as International Protection Rating) consists of the letters IP...
Load AC
A key parameter for a power supply is the maximum AC load that it can support. This is the total of all the items of equipment, heaters,...
Maintenance Bypass
It used to route the  Commercial AC Power  from the  AC input  directly to the AC output, bypassing the Converters/Battery/ STS...
Mean Time Between Failures MTBF
The arithmetic average of operating times between failures.It is generally used to express the reliability of a product.The reliability...
Mean Time To Repair MTTR
MTTR represents the average time required to repair a failed component or device. In the context of a maintenance contract, MTTR is...
Off grid sites
Off-grid sites are mostly present in developing countries. In these regions, most people living in urban areas have access to the...
Overload
When the full current or power rating of a power supply is exceeded. The response of the power supply to an overload will depend on the...
Power Factor
The  power factor  of an  Alternating current  electric power system is defined as the ratio of the real power flowing to the load to...
Power Source
Any device that supplies electrical power: including the utility grid, generators, cells, batteries, power packs, power supplies, solar...
Rectifier
A  rectifier  is an electrical device that converts  alternating current  (AC), which periodically reverses direction, to  direct...
Short Circuit
A short circuit is an abnormal low-resistance connection between two nodes of an electrical circuit intended to be at different...
Sine Wave
A wave form of a single frequency  alternating current  whose displacement is the sine of an angle proportional to time or distance. The...
Single Phase
Single-phase electric power refers to the distribution of  alternating current  electric power using a system in which all the voltages...
Static Transfer Switch STS
Static transfer switch A static transfer or Automatic Transfer switch (ATS) uses power semiconductors to transfer a load between two...
Surge
A sudden, strong overvoltage transition.Surges can be fast, short duration electrical transients in voltage (voltage spikes) and current...
Three Phase
Three-phase electric power is a common method of  alternating-current  electric power generation, transmission, and distribution. It is...
Total Harmonic Distortion THD
The total harmonic distortion, of a signal is a measurement of the harmonic frequencies present that cause a waveform to deviate from...
Two Phase
In a two phase electrical distribution system the AC mains power is supplied over two circuits, with the voltage phases differing...
UL Certification
Underwriters Laboratories Inc. (UL) is an independent product safety certification organization. UL develops standards and test...
UPS
An uninterruptible power supply, also uninterruptible power source. UPS or battery/flywheel backup, is designed to provide emergency...