HT PVCHECK, Manual

Page: 41 / 56

PVCHECK 39
2. In STRING mode, in case the instrument detects an Isc current
higher than 10A, it does not carry out the test, gives out a long
sound and displays the message “Isc current too high”.
3. In STRING mode, in case the instrument detects a current < 0.2A
between terminals P and N, it does not carry out the test, gives
out a long sound and displays the message
“Current < Lim”.
4. In STRING mode, in case the instrument detects a voltage < 15V
between terminals P and N, it does not carry out the test and
displays the message “Low voltage”.
6.5. MEASUREMENT OF CONTINUITY ON PV MODULES/STRINGS/FIELDS (LOW
Ω)
6.5.1. Foreword
The purpose of this measurement is to test the continuity of protective conductors and
equipotential ones (e.g. from rod to earth and connected foreign earth) and earth rods of SPDs on
PV installations. The test must be carried out using a test current > 200mA according to the
prescriptions of IEC/EN62446 guideline
6.5.2. Calibration of measuring cables
1. Position the cursor onto LOW
Ω
by using the arrow keys (

,

) and
confirm with ENTER . The display shows this screen:
Compensation of the measuring cables’ resistance
Connect the measuring cables as shown in Fig. 13: