HT instruments PVCHECK - Manual (Page 14)

PVCHECK
EN - 12
5.1.5. Irradiance
This section allows setting the minimum irradiance threshold both for IVCK measurement
and for efficiency test on a PV installation.
1. Position the cursor onto “Irradiance” by using the arrow
keys (
,) and confirm with ENTER.
2. The display shows the screen containing “Min Irr IVCK”,
which allows setting the minimum irradiance threshold
expressed in W/m
2
, used by the instrument as a reference
during IVCK measurement, and “Min Irr EFF”, which
allows setting the minimum irradiance threshold expressed
in W/m
2
, used by the instrument as a reference while
measuring the efficiency of a PV installation. Use the arrow
keys (
,) to switch between the two items.
3. To set the minimum irradiance threshold, use the arrow
keys (
 , ). To obtain results with the accuracy
guaranteed in this manual, we recommend following the
instructions given in § 10. The value can be set within the
following range: 0
 800 W/m 2
4. Press the SAVE key to save the settings made; the
message “Data saved” will be displayed for a few seconds.
Press the ESC/MENU key to exit without saving and go
back to the previous screen.
15/05/12 15:34:26
M i n I r r I V C K :  0 0 0  W / m 2
M i n I r r E F F :  6 0 0  W / m 2
S A V E t o s t o r e
S E T
CAUTION
The “0 W/m
2
” setting for parameter “Irr min IVCK” allows carrying out IVCK
measurements without the following conditions being checked:
 Connection of reference cell to IRR input of the instrument
 Unsteady irradiation values
 Number of modules consistent with the measured open circuit voltage
5.1.6. DC
Clamp
This option allows setting a possible correction factor K for the DC clamp, in order to improve
current measurement. If present, the correction factor is indicated on the rear label of the clamp
itself, indicated as:
K= X.xxx
In case no label is present, set k = 1.000
1. Position the cursor onto “DC Clamp” by using the arrow
keys (
,) and confirm with ENTER.
2. The display shows the item “DC clamp K”, which allows
setting the corrective factor in the following range 0.950 to
1.050. Set the desired values by means of the arrow keys
(
 , ).
3. Press the SAVE key to save the settings made; the
message “Data saved” will be displayed for a few seconds.
Press the ESC/MENU key to exit without saving and go
back to the previous screen.
15/05/12 15:34:26
D C c l a m p K :  1 . 0 0 0 
S A V E t o s t o r e
S E T