Capacitor
- An electrical device used to store electrical energy, and to
release it back into the power system when required. Capacitor
Bank - A collection of individual capacitor units grouped to
form a particular Kvar and Voltage rating. "Banks" may
be either pole mounted, substation mounted, or metal enclosed
(pad mounted).
Certification
Test - Tests run on a regular periodic basis to verify that
selected, key performance characteristics of a product or
representative samples thereof have remained within performance
specifications.
Circuit
Breaker - a device which detects excessive power demands in a
circuit and self-interrupts when they occur.
Classification
of Arresters - Arrester classification is determined by
prescribed test requirements. These classifications are: station,
intermediate, distribution heavy duty, distribution normal duty,
distribution light duty, and secondary.
Classifying
Current - The designated current used to perform the
classification tests.
Companion
Fuse - Cooper Power Systems' externally mounted back-up
current-limiting fuse. 12K, 25K and 40K ratings are available to
coordinate with the same rating K Link.
Conductor
- Any material which allows electrons to flow through it.
Conformance
Tests - Tests made, when required, to demonstrate selected
performance characteristics of a product or representative
samples thereof.
Continuous
Rating - The constant load which a device can carry at rated
primary voltage and frequency without damaging and/or adversely
effecting it characteristics.
Coordination
- The process of selecting fuses and/or breakers or reclosers
with specific time current characteristics, so a fault will be
cleared by the downline (protecting) device before the upline
(protected) can melt or lockout; the act or state of providing
harmonious adjustment of functioning devices.
Corona
- A phenomenon associated with high voltage. Appears as a
bluish-purple glow on the surface of and adjacent to a conductor
when the voltage gradient exceeds a certain critical value,
producing light, audible noise and ozone (O3).
Correlation
- Selection of the proper transformer fuse; the process of
selecting fuses having specific characteristics in accordance
with specific protection or load criteria.
Creep
- Continued deformation of material under stress.
Creepage
- The travel of electrolyte up the surface of the electrode or
other parts of the cell above the level of the main body of
electrolyte.
Creepage
Distance - The shortest distance between two conducting parts
measured along the surface or joints of the insulating material
between them.
Crest
Value - The maximum value attained by the peak of a wave,
surge or impulse.
CU
- Copper.
Current
- The movement of electrons through a conductor, measured in
amperes.
Current
Interrupter - Any device that will open a circuit after
sensing an abnormal high-circuit condition; a general name given
to all types of fuses, reclosers and breakers.
Current-Limiting
Fuse, Back-up - A current-limiting fuse capable of
interrupting all currents from its rated maximum interrupting
current down to its rated minimum interrupting current as
specified by the manufacturer; defined by ANSI C37.40-1981 or
latest issue.
Current-Limiting
Fuse, Full Range - A current-limiting fuse capable of
interrupting all currents from the maximum rated interrupting
current down to the minimum continuous current that causes
melting or the fusible element(s), when the fuse is applied at
maximum ambient temperature specified by the fuse manufacturer; a
proposed ANSI C37.4 definition.
Current-Limiting
Fuse, General Purpose - A current-limiting fuse capable of
interrupting all currents from its rated maximum interrupting
current down to that current which causes melting or the fusible
element in one hour; defined by ANSI C37.40-1981 or latest issue.