© 2008 Siemens Energy & Automation, Inc. All Rights Reserved
PMCM-9340D-0208 ACCESS 9340 and 9360 Meters
2/2008 Appendix C—EN50160 Evaluation
EN–227
value of phase-to-phase voltage because of a shift of the neutral
point of the three-phase voltage system.
Under certain circumstances, a fault occurring upstream from a
transformer will produce temporary overvoltages on the low voltage
side for the time during which the fault current flows. Such
overvoltages will generally not exceed 1.5 kV rms.
The ACCESS 9360 detects and classifies the overvoltages for each
phase voltage as follows:
NOTE: Disturbance alarms are used to detect these events in the
ACCESS 9360.
You can configure the number of allowable events per week for each
range of Magnitude in registers 3930 – 3937. (Default = -32768 =
Pass/Fail evaluation disabled.)
Duration (t) seconds
Magnitude (M) %
Nominal
1 ≤ t < 3 3 ≤ t < 10 10 ≤ t < 20 20 ≤ t < 60 60 ≤ t < 180 Total
110 < M ≤ 115
115 < M ≤ 130
130 < M ≤ 145
145 < M ≤ 160
160 < M ≤ 175
175 < M ≤ 200
M > 200
Total
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