Irradiance; Dc Clamp (Solar I-Vw Or Solar I-Ve) - HT SOLAR I-Ww User Manual

5.1.5. Irradiance

1. Move the cursor to "Irradiance" by means of the arrow
keys (,) and confirm with ENTER.
2. The display shows the screen with the options: " Irr min
IV" which allows to set the minimum threshold of
measured irradiance expressed in W/m
reference during the I-V curve measurements and "Irr min
EFF" (SOLAR I-Vw or SOLAR I-Ve which allows to set the
minimum threshold of measured irradiance expressed in
2
W/m , used by meter as reference during the check PV
efficiency measurements
3. Set the value by means of the arrow keys (,). The
accuracy indicated in this manual is granted under
condition indicated in § 10.1 and § 10.2. In I-V curve
measurement the value is set within the 0  800 W/m
interval while 400  800 W/m
operations (SOLAR I-Vw or SOLAR I-Ve)
4. Confirm with SAVE and the "Saved data" message is
displayed for a while. Press ESC/MENU key to exit without
saving and to go back to the previous screen.
The "0 W/m2" setting for parameter "Min Irr IV" allows carrying out I-V
measurements without the following conditions being checked:
 Connection of reference cell to input IRR of the instrument
 Unsteady irradiation values
 Number of modules consistent with the measured open circuit voltage

5.1.6. DC Clamp (SOLAR I-Vw or SOLAR I-Ve)

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:
In case no label is present, set k = 1.000
1. Move the cursor to "DC Clamp" by means of the arrow
keys (,) and confirm with ENTER
2. The item: "DC clamp k" is shown at display to set the
corrective factor in a interval within 0.950 and 1.050. Set
the value by means of the arrow keys (, )
3. Confirm with SAVE and the "Saved data" message is
displayed for a while. Press ESC/MENU key to exit without
saving and to go back to the previous screen
I-V400w - I-V500w - SOLAR I-Vw - SOLAR I-Ve
2
, used by meter as
2
for the PV check
CAUTION
K= X.xxx
EN - 12
15/05/10 15:34:26
I r r m i n I V :  0  W / m 2
I r r m i n E F F
:  6 0 0  W / m 2
SAVE to store data
2
15/05/10 15:34:26
D C c l a m p k :  1 . 0 0 0 
SAVE to store data
S E T
S E T