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ACCESS 9340 and 9360 Meters PMCM-9340D-0208
Appendix C—EN50160 Evaluation 2/2008
EN–226
You can configure the number of allowable events per week for each
range of Depth in registers 3920 – 3927. (Default = -32768 =
Pass/Fail evaluation disabled.)
Detection of Interruptions of the Supply Voltage
The standard defines an interruption as voltage less than 1% of
nominal voltage. Because some locations require a different
definition, you can configure this value in register 3906. Interruptions
are classified as “short” if duration ≤ 3 minutes or “long” otherwise.
The ACCESS 9360 classifies interruptions as shown in the following
table.
You can configure the number of allowable short interruptions per
year in register 3918 (Default = -32768 = Pass/Fail evaluation
disabled). You can configure the number of allowable long
interruptions per year in register 3919. (Default = -32768 = Pass/Fail
evaluation disabled.)
Detecting and Classifying Temporary Power Frequency Overvoltages
As stated in EN50160, a temporary power frequency overvoltage
generally appears during a fault in the electrical utility power
distribution system or in a customer’s installation, and disappears
when the fault is cleared. Usually, the overvoltage may reach the
Duration (t) seconds
Depth (D) % Nominal
1 ≤ t < 3 3 ≤ t < 10 10 ≤ t < 20 20 ≤ t < 60 60 ≤ t < 180 Total
10 ≤ D < 15
15 ≤ D < 30
30 ≤ D < 45
45 ≤ D < 60
60 ≤ D < 75
75 ≤ D < 90
90 ≤ D < 99
Total
Duration (t) seconds
t < 1 1 ≤ t < 2 2 ≤ t < 5
5 ≤ t <
10
10 ≤ t <
20
20 ≤ t <
60
60 ≤ t <
180
180 ≤ t <
600
600 ≤ t <
1200
1200 ≤ t
Total
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