Dranetz PowerVisa, Руководство пользователя

Страница: 245 / 274

F-1
A P P E N D I X F
Event Classification
Range of
Variations as per
IEEE, IEC, and
Dranetz-BMI
Events characterization implemented in the PowerVisa 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-BMI.
Continued on next page
IEEE 1159 IEC 61000-4-30
(deviations from IEEE
1159 only are noted)
Dranetz-BMI
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