Dranetz PowerGuide 4400, Руководство пользователя

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F-1
A P P E N D I X F
Event Classification
Range of
Variations as per
IEEE, IEC, and
Dranetz
Events characterization implemented in the 4400 adheres to the IEEE 1159 and IEC
61000-4-30 Class A measurement standards. The range of variations as per IEEE and
IEC standards are featured below, along with quality test measurements developed by
Dranetz.
Continued on next page
IEEE 1159 IEC 61000-4-30
(deviations from IEEE
1159 only are noted)
Dranetz
Short Duration Variations
Magnitudes
Sag/Dip
Swell
Interruption
Temporal
Instantaneous
Momentary
Temporary
Duration
(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
(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
Long Duration Variations
Magnitudes
Sag
Swell
Interruption
Duration
Sustained
Cold Load
Pickup is return
from sustained
same magnitude values
as Short Duration
Variations (see above)
> 1 minute
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