Ieee std 1159-1995, ieee recommended Practice for Monitoring Electric Power Quality

 
3.1.5 commercial power: 
Electrical power furnished by the electric power utility company.
c
 
3.1.6 coupling: 
Circuit element or elements, or network, that may be considered common to the input mesh
and the output mesh and through which energy may be transferred from one to the other.
a
 
3.1.7 current transformer (CT): 
An instrument transformer intended to have its primary winding con-
nected in series with the conductor carrying the current to be measured or controlled.
a
 
3.1.8 dip: 
 
See: 
 
sag.
3.1.9 dropout: 
A loss of equipment operation (discrete data signals) due to noise, sag, or interruption.
c
 
3.1.10 dropout voltage: 
The voltage at which a device fails to operate.
c
 
3.1.11 electromagnetic compatibility:
The ability of a device, equipment, or system to function satisfacto-
rily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to any-
thing in that environment.
b
 
3.1.12 electromagnetic disturbance:
Any electromagnetic phenomena that may degrade the performance
of a device, equipment, or system, or adversely affect living or inert matter.
b
 
3.1.13 electromagnetic environment:
The totality of electromagnetic phenomena existing at a given location.
b
 
3.1.14 electromagnetic susceptibility: 
The inability of a device, equipment, or system to perform without
degradation in the presence of an electromagnetic disturbance.
NOTEÑSusceptibility is a lack of immunity.
b
 
3.1.15 equipment grounding conductor:
The conductor used to connect the noncurrent-carrying parts of
conduits, raceways, and equipment enclosures to the grounded conductor (neutral) and the grounding elec-
trode at the service equipment (main panel) or secondary of a separately derived system (e.g., isolation
transformer). See Section 100 in ANSI/NFPA 70-1993 [B2].