Valve Arrester - An arrester that includes one
or more valve elements.
Valve Element - A resistor that, because of
its nonlinear current/voltage characteristics, limits the voltage
across the arrester terminals during the flow of discharge
current and contributes to the limitation of follow current at
normal power frequency voltage.
VariGAP®
- CPS's registered tradename for an arrester design which
combines a silicon-carbide ring/gap structure with a gapless MOV
disk structure.
VaiSTAR®
- CPS's registered tradename for an arrester design using
ungapped metal-oxide varistor technology.
Varistor - A two-electrode semiconductor
device with a voltage dependent on nonlinear resistance that
drops markedly as the applied voltage is increased.
Vent - An intentional opening for the escape
of gasses to the outside.
Volt (V) - The unit of measure for voltage.
Volt-Amperes (VA) - The current flowing in a
circuit multiplied by the voltage of that circuit. An expression
of the output rating of a transformer.
Voltage - Electric pressure; the force which
causes current to flow through an electrical conductor.
Voltage Regulation - For a transformer, the
change in secondary voltage which occurs when the load is reduced
from rated value to zero, with the values of all other quantities
remaining unchanged. The regulation may be expressed in percent
(or per unit) on the basis of the rated secondary voltage at full
load.
Voltage
Regulator - An electrical device on an electric system
that keeps voltage which is supplied to customers at a constant
level, usually around 120 volts, regardless of load fluctuations.
Glossary Index