HT instruments PVCHECK - Manual (Page 49)

PVCHECK
EN - 47
6. The value of compensated resistance of the cables which
will be subtracted from all subsequent continuity
measures is shown next to “Rcal” and the message
“Calibration OK” appears on the display.
7. To delete the value of compensated resistance, carry out a
new compensation procedure with a resistance higher than
5
 such as, for example, with open leads. The value in Rcal
is zeroed on the display.
15/05/12 15:34:26
R P E m a x : 1 . 0

R c a l : 0 . 0 2

R p e = - - -

I t e s t = - - - m A
C a l i b r a t i o n O K
Selection L O W

6.5.3. Measuring
continuity
1. Position the cursor onto LOW
 by using the arrow keys
(
,) and confirm with ENTER. The display shows the
screen to the side.
2. Press the ENTER key, activate “Settings” and possibly
change the desired parameters (see § 5.3.1). The
following parameters are shown on the display:
 RPE max  maximum threshold for continuity
measurement, which can be selected in a range 1
 
5
 in steps of 1
 Rcal  the value of resistance of the measuring
cables after calibrating them
 Rpe  the result of continuity measurement
 Itest  real test current
15/05/12 15:34:26
R P E m a x : 1 . 0 
R c a l : - - - 
R p e = - - -

I t e s t = - - - m A
Selection L O W

3. Press the ENTER key, activate “Cable calibration” (see § 6.5.2) to carry out the initial
calibration of the measuring cables.
Connect the instrument to the PV module/string being tested and to the main earth node of
the system as shown in
4. Fig. 14
CAPTION:
E: Green
cable
C: Blue cable
1. PV module/string
2. Main system earthing
3. Earthed metal structure in the
system