Ambient Temperature - The average temperature of the surroundings.
Alloy - A mixture of several other metals or a metal and a non-metal.
Transformer short-circuit voltage (Uscx %) - Relative measurement (%) of the internal impedance of a transformer. This short-circuit impedance is commonly called the short-circuit voltage because it is measured during a short-circuit test (shorted secondary winding subjected to a current set to In). For most common three-phase transformers, this value ranges between 3 and 6%.
Service Life - The period of useful life of a battery before a predetermined end-point voltage is reached.
Power Surge - Voltage above 110% of rated RMS voltage for one or more cycles.
Frequency - The repetition of cycles measured in Hz. 60 Hz is the standard frequency in the U.S. 50 Hz is the standard frequency in other parts of the world. 60 Hz = 60 cycles per second.
Voltage Depression - An abnormal drop in voltage below expected values during the discharge of a battery.
