LB - Loadbreak.
Lightning - An atmospheric electrical
phenomenon associated with thunderstorms; a surge on a
system that results from energy being impressed on the
Liquid-Filled Transformer -
A transformer in which the core and coil are immersed in
a liquid which acts as both a cooling and insulating
Limit Switch - A switch
that is operated by some part or motion of a power-driven
machine or equipment to alter the electric circuit
associated with the machine or equipment.
Livefront - Apparatus with
bus work and connections exposed to the operator.
Load - The load of a
transformer is the power, in kVA or volt-amperes,
supplied by the transformer. Lagging Load: inductive type
load. Leading Load: capacitive load.
Load Curve - A curve
showing instantaneous demand (kVA or MVA) versus time.
Curves are usually plotted for one day or one week.
Integrating the load curve will provide the amount of
Load Factor - Represents
how efficiently the electrical system capacity is being
used. The higher the load factor the higher the
Load Switching -
Transferring the load from one source to another.
Loadbreak - The ability of
a switching device to disconnect a load current without
Loadmake - The ability of a
switching device to connect to a specific load current
LV - Low Voltage, CPS's low
voltage automatic resetting fault indicator, utilizing
secondary voltage; usually used in conjunction with an
elbow terminator in a padmount transformer.
LVDA - Low Voltage