Bender B 9310 0735, Manual

Page: 52 / 116

Power Quality
52 PEM735_D00084_00_M_XXEN/02.2015
The display shows:
Measurement interval: 10 min mean values
PEM735 can determine the unbalance for the zero sequence and the negative se-
quence component.
Unbalance
u
2
= (negative sequence/positive sequence component) x 100 %
Unbalance u
0
= (zero sequence/positive sequence component) x 100 %
7.3.6 Harmonic Voltage
(according to DIN EN 50160)
Display text Description Note
Limit (%)
Permissible deviations from the
nominal supply voltage (unbal-
ance tolerance band)
Tolerance (%)
Number [%] of the measured val-
ues, which must be in the toler-
ance band within one
measurement period.
Unbalance u2
P95 Value (%)
Measured value of the 95
th
per-
centile (P95) during an observa-
tion period
unbalance u
2
is the voltage
value for the unbalance of the
negative phase sequence
Actual (%)
Number of measured values [%]
within the tolerance band of one
measurement period.
Result Specifications complied with?
Pass: Specifications complied
with.
Fail: Specifications not com-
plied with.
Measured
Unbalance u2
Range
Range of measured values for
unbalance u2