HT instruments PQA820 - Manual (Page 12)

PQA820
EN – 11
5.2. SETTING TYPE OF CLAMP
The instrument is capable of managing two types of clamp meter:
 STD: standard clamp with iron core
 Flex: flexible clamp
It is also possible to differentiate the type of clamp used for phase and neutral current with
independent setting of used full scales.
The type of clamp selected must always be consistent with the type of clamp actually
used. For further information on the settings of this parameter, please refer to the on-line
guide of the management software
5.3. SETTING
THE CLAMP'S FULL SCALE
This parameter allows selecting the full scale of the clamp used. It is possible to
differentiate the full scale of the clamp used for measuring phase and neutral current. For
the “Flex” clamp type it is possible to select 100A and 1000A values only. The selected
full scale must always be consistent with the full scale actually used. For further
information on the settings of this parameter, please refer to the on-line guide of the
management software.
5.4. SETTING THE VALUE OF TRANSFORMATION RATIO OF VTS
The instrument allows interfacing also with possible Voltage Transformers (VT) found in
the system to be measured and displays the value of the voltages found on the primary
transformers. To this aim it is necessary to set the value of the transformation ratio of the
voltage transformers installed. Selectable range is 1
 3999
5.5. SETTING
LIMITS FOR VOLTAGE ANOMALIES
The instrument allows the voltage anomalies (sags, swells) recording with preliminary
setting of a nominal voltage value (depending on the type of selected system) and the
minimum and maximum limit thresholds with percentage values selected between 1% and
30%. For further information on the settings of this parameter, please refer to the on-line
guide of the management software and § 12.1
5.6. SETTING THE INTEGRATION PERIOD
The value of this parameter determines every how many seconds the values of all
selected quantities will be archived in the instrument's memory (see § 12.4). Available
values: 5s, 10s, 30s, 1min, 2min, 5min, 10min, 15min, 60min
For further information on the settings of this parameter, please refer to the on-line guide
of the management software.