E-Mon E-PS-A-RTU-N - Manual (Page 93)

Chapter 4 Power
S O F T W A R E E N 5 0 1 6 0 E V A L U A T I O N A N D
R E C O R D I N G
PowerSmart+ Advanced Power Quality Meter 93
You can change the compliance limit for the interharmonic THD via the EN50160 PQ
Recorder setup. The individual interharmonic voltage limits can be changed via the
EN50160 Harmonics setup.
Mains Signaling Voltage
This characteristic defines the magnitude of the signal voltages used in some countries for
signal transmission over public supply networks. These may include ripple control signals
in a frequency range from 100 HZ to 3 kHz, and carrier wave communications signals in a
frequency range from 3 kHz to 148.5 kHz.
The PowerSmart+ Advanced PQM can evaluate ripple control signaling voltages in a
frequency range from 100 Hz to 3 kHz.
Method of Evaluation
Since evaluating signal voltages is not commonly used, this feature is normally disabled in
your meter. You can enable evaluation of signaling voltages via the EN50160 Advanced
Setup.
The PowerSmart+ Advanced PQM evaluates up to four ripple control frequencies. You can
select the required signaling frequencies via the EN50160 Advanced Setup.
The basic measurement is the magnitude of the signaling voltage over a period of 3
seconds under normal operating conditions.
Signaling voltages are not evaluated if the supply voltage crosses a voltage tolerance limit
(±15% Un).
Target Values
The voltage levels given by the EN50160 in Figure 1 of Clause 2.13 are taken from the so-
called “Meister-curve” which defines the maximum permissible ripple control voltages in LV
networks.
Compliance with the EN50160 requires that the 3-second mean of signal voltages
shall be less or equal to the specified limits for 99% of a day.
Configuring the EN501 Configuring the EN501 Configuring the EN501 Configuring the EN50160 Recorders 60 Recorders 60 Recorders 60 Recorders
Basic Device Settings
The following device settings affect the EN50160 evaluation and should be checked prior to
running the EN50160 recorders.
Reference Voltage
As the general approach of the EN50160, all voltage characteristics are referenced to the
nominal voltage that shall be specified in your meter before running the EN50160 recorders
(see
Basic Meter Setup ). The nominal voltage refers to the line-to-neutral supply voltage in
LV networks (4LN3, 3LN3 or 3BLN3 wiring modes), and to line-to-line voltage in MV
networks (4LL3, 3LL3, 3BLN3, 3OP2, 3OP3 and 3DIR2 wiring modes).
Reference Frequency
The nominal line frequency is used as a reference for the evaluation of power frequency
variations. It should be specified in your meter before running the EN50160 recorders (see
Basic Meter Setup ).
EN50160 Evaluation Limits and Options
Limits for evaluation of the EN50160 voltage characteristics can be set via the EN50160
PQ Recorder Setup and, for harmonic and interharmonic voltages, via the EN50160
Harmonics Setup (see EN50160 Harmonics Limits Setup ).
The EN50160 evaluation options can be changed via the EN50160 Advanced Setup .