Static bypass switch - Power-electronics device that can be used to switch from one source to another without interruption in the supply of power. In a UPS, transfer is from Mains 1 to Mains 2 and back. Transfer without interruption is possible due to the fact that there are no mechanical parts and the ultra-fast switching capabilities of the electronic components.
Distortion (individual) - Ratio between the rms value of an nth order harmonic and the rms value of the fundamental.
Crest factor (Fc) - Ratio between the peak current value to the rms current value.
Thermostat - A temperature sensitive switch.
Open-Circuit Voltage (OCV) - The difference in potential between the terminals of a cell when the circuit is open (no-load condition).
Voltage Delay - Time delay for a battery to deliver the required operating voltage after it is placed under load.
Electrolyte - The medium which provides the ion transport mechanism between the positive and negative electrodes of a cell.
