Short-Term Flicker (Pst) Of The Voltage; Peak Factors For Current And Voltage; Sec Rms Values For Voltage And Current - AEMC 8230 User Manual

Short-term Flicker (PST) of the Voltage

Numerical method derived from standard IEC 61000-4-15.
The PST value is refreshed every 1 minute.
Peak Voltage and Current
Vpp= max (V[n]), Vpm= min (V[n]), n
App= max (A[n]), Apm= min (V[n]), n
Peak Factors for Current and Voltage (over 1 second)
max (Vpp
Vcf =
1
2
NSC
max (App
Acf =
1
2
NSC

1 sec RMS Values for Voltage and Current

1
Vrms
=
NSS
1
Arms
=
NSS
Power Quality Analyzer Model 8230
(Updated on each waveform refresh)
, Vpm )
NSC − 1
[ ]
∑
2
⋅ V n
n 0
=
, Apm )
NSC − 1
[ ]
∑
2
A n
⋅
n = 0
NSS
− 1
[ ]
∑
2
⋅ V n
n
= 0
NSS − 1
[ ]
∑
2
⋅ A n
n = 0
∈
[0..NSC-1]
∈
[0..NSC-1]
Peak factor voltage
Peak factor current
Rms voltage
Rms current
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