SMY133-SMY134-SMP133 Operating Manual
Instead the I
RCM
–multiplier, the 0/20mA or the 4/20mA RCT- type can be set – see the RCM
chapter below.
•
Nominal Frequency
f
NOM
- the parameter must be set in compliance with the measurement
network nominal frequency to either 50 or 60 Hz, optionally to „DC-500“ (=
Fixscan
mode).
•
Nominal Voltage U
NOM
, Nominal Current I
NOM
, Nominal Power P
NOM
- For the presentation
of quantities in percent of nominal value, alarms operation, voltage events detection and
other functions it is necessary to enter also the nominal ( primary ) voltage
U
NOM
, nominal
current
I
NOM
and nominal apparent three-phase power (input power) of the connected load
P
NOM
( in units of kVA ) Although the correct setup has no effect on measuring operation of the
instrument, it is strongly recommended to set at least the
U
NOM
correctly.
Correct setting of the
I
NOM
and the
P
NOM
is not critical, it influences percentage representation
of powers and currents and statistical processing of measuring in the software only. If
measured network node rating is not defined, we recommend to set their values, for example,
to the nominal power of source transformer or to the maximum supposed power estimated
according current transformers ratio, etc.
The
U
NOM
is displayed in form of phase/line voltage.
3.1.1.1 Setup Example
Following example explains how to adjust the CT ratio :
Assuming that the conversion of used CT for inputs of current L1 to L3 is 750/5 A. To edit the
parameters, press the
, navigate to the
Menu-Settings
with the buttons
and
and then choose it with the
. In the
Setting
window choose
Setting-
Installation
option. The
Setting-Installation
window appears.
In the window navigate down to the current transformer ratio parameter ( CT ) and choose with the
.
Now you can type new value of the parameter : with the
you can move from a digit to
another one and to set each digit to target value using the
and
. At the end press
the
and the parameter is set.
You can set other parameters in the same way.
After all of the parameters of the group correctly set, return back to an actual data screen with the
(escape) button and confirm saving of changes with the
.
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