Kamstrup 162M User Manual

TECHNICAL DESCRIPTION Kamstrup 162M/382M
5512-1040 GB/05.2012/Rev. C1
17
3.5.1 Voltage measurement
The RMS voltage measured per phase with average determination every second forms the basis of the registration
of overvoltage, undervoltage, and voltage failures. The voltage per phase can be displayed with an accuracy
corresponding to the meter’s class.
3.5.2 Registration of overvoltage/undervoltage
Registration of overvoltage/undervoltage for diagnosing the voltage situation of the individual consumer is an
important tool in connection with the evaluation of possible complaints from consumers as well as network
analysis.
If one or more phases has/have been outside a configurable overvoltage (U
High
) or undervoltage (U
Low
) limit for
some time (t
d
), this is registered in the meter's event logger for voltage quality. The registration includes date and
hour. The time period which triggers a registration can be configured between 10 secs. and 2550 secs.
The limits for registration of overvoltage and undervoltage are configurable from 0 to 20 %, i.e. from 230 VAC – 20
% (184 VAC) to 230 VAC + 20 % (276 VAC).
Time
Voltage
230 V
U
Low
U
High
t
1
t
2
t
3
t
4
t
1
+ t
d
t
3
+ t
d
U
Max
U
Min
Over voltage
Under voltage
Figure 5: Voltage quality measurements - under and over voltages.
Time
Voltage
230 V
t
1
t
2
t
3
t
4
t
1
+ t
d
U
Cutoff
= 160 V
Voltage cut off
Figure 6: Voltage quality measurements - voltage cut-off.
Figure explanation
U
High
is the configurable limit for overvoltage in %
U
Low
is the configurable limit for undervoltage in %
U
max
is the peak voltage in the overvoltage period (t
1
– t
2
)
U
min
is the minimum voltage in the undervoltage period (t
3
– t
4
)
U
Cutoff
is the voltage failure per phase (t
3
– t
4
)
t
(1-4)
indicates RTC.

Kamstrup 162M Specifications

General

Brand	Kamstrup
Model	162M
Category	Measuring Instruments
Language	English