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Range of
Events characterization implemented in the 4400 adheres to the IEEE 1159 and IEC
Variations as per
61000-4-30 Class A measurement standards. The range of variations as per IEEE and
IEEE, IEC, and
IEC standards are featured below, along with quality test measurements developed by
Dranetz
Dranetz.
Short Duration Variations
Magnitudes
Sag/Dip
Swell
Interruption
Temporal
Instantaneous
Momentary
Temporary
Duration
Long Duration Variations
Magnitudes
Sag
Swell
Interruption
Duration
Sustained
Cold Load
Pickup is return
from sustained
A P P E N D I X
Event Classification
IEEE 1159
(Sag) Vrms Below 90%
(or Low limit) to 10% of
nominal
Vrms Above 110% (or
High limit) to 180% of
nominal
Vrms Below 10% (or
Very Low limit) of
nominal
0.5 - 30 cycles
0.5 - 30 seconds
3 - 60 seconds
begins when any one
phase is Out of Limits;
ends when all phases are
Within Limits
same magnitude values
as Short Duration
Variations (see above)
> 1 minute
F
IEC 61000-4-30
(deviations from IEEE
1159 only are noted)
(Dip) Vrms Below 90%
(or Low limit) of
nominal
Vrms Above 110% (or
High limit) of nominal
Vrms Below 1% (or
Very Low limit) of
nominal
Continued on next page
Dranetz
F-1
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