Glossary
Universal Input
What is Universal Input? Universal input means the power source input range is within AC 85 ~ 264 Volt and capable of operating at 50 and 60 Hz. These power [...]
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UL 1310
UL1310: Safety directive covering Class 2 power supplies and battery chargers intended for use in indoor and outdoor environments on alternating branch circuits [...]
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Underwriters Laboratories (UL)
What is Underwriters Laboratories (UL)? Underwriters Laboratories (UL) is an independent, U.S. based non-profit organization that tests and certifies components [...]
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TUV
What is the TUV? TUV is a safety-testing laboratory with headquarters in Germany. The TUV laboratory provides a comprehensive testing and certification services [...]
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True Power
What is True Power? In an AC circuit, true power is the actual power consumed by the equipment to do useful work. It is distinguished from apparent power by [...]
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Transfer Time
What is Transfer Time The transfer time is the amount of time a UPS takes to switch from the utility supply to the battery derived supply whenever there is a [...]
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Thermal Protection
What is Thermal Protection? Thermal protection is a method of detecting over-temperature conditions and disconnecting the power to the electronic circuits. The [...]
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Temperature Coeffient
The average output voltage change expressed as a percent per degree centigrade of ambient temperature change. This is usually specified for a pre-determined [...]
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Switching Frequency
What is Switching Frequency? The rate at which the DC voltage is switched on and off during the pulse width modulation process in a switching power supply. The [...]
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Surge
What is a Power Surge? A power surge is an abnormally high voltage lasting for a short period of time. A power surge is a transient wave of voltage, current or [...]
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