General Characteristics - Sonel PVM-1020 User Manual

NOTE!
Only accessories intended for a given device should be used, as listed in section 12. Us-
ing other accessories may cause damage to measuring terminals, introduce additional
measurement errors and create a risk for the user.
Due to continuous development of the meter's software, the actual appearance of the
display, in case of some of the functions, may slightly differ from the display presented in
this operating manual.

Do not touch the tested object during the R
measurement before it is fully discharged. It may result in electric shock.

R continuity measurement may be performed only on fully discharged objects.
CONT
1.2

General characteristics

PVM-1020 is a multifunctional measuring device designed to measure the parameters of photovoltaic
systems and the parameters of the inverter connection points to the power grid. It allows you to per-
form the necessary measurements for a photovoltaic system according to category 1 specified in
standard "IEC 62446-1 - Photovoltaic systems (PV). Testing, documentation and maintenance re-
quirements. Part 1: Networked Systems. Documentation, acceptance and supervision ".
Measured parameters:

DC voltage of an open module / chain PV – U

AC voltage on the AC side (connection of the inverter to the power grid),

DC short-circuit current of the PV module/chain – I

R PV insulation resistance of the PV system on the DC side by method 1 according to IEC
ISO
62446-1 standard (i.e. the measurement does not cause a module / string short-circuit), al-
lowing the determination of the insulation resistance of the PV module / string at both poles:
R + and R
ISO

R insulation resistance of the PV system on the AC side (connection of the inverter to the
ISO
power grid),

DC current and power of the PV module / string / system on the DC side,

DC and power of the PV system on the AC side (connection of the inverter to the power
grid),

circuit continuity (R
string,

parameters of the blocking diode, used in PV systems.
The meter is equipped with banana sockets and a socket for current clamps. The sockets are
used for functional measurements of the systems (when working with the inverter turned on). Meas-
urements are made using the sockets marked as "+" and "-". The (PE) socket
ing the insulation resistance of a photovoltaic system by the short-circuit method, which allows user to
measure the system as a whole, in one measurement, regardless of its power.
The meter has two radio interfaces (not working simultaneously): Bluetooth and LoRa.

The Bluetooth module is used for communication between the meter and a computer in or-
der to download the results from the memory.

The LoRa module is used for communication with IRM-1.
IRM-1 is a meter designed for measuring solar irradiance and the temperature of photo-
voltaic cells and their environment. The data it provides is necessary to convert the val-
ues measured by PVM-1020 to the STC conditions. The standardized values enable the
user to determine whether the photovoltaic system is working with optimal efficiency and
to check the PV modules for potential damage.
-,
ISO
) of the earthing and equipotential bonding cables of the PV module /
CONT
PVM-1020 – USER MANUAL
insulation resistance measurement or after the
ISO
,
OC
,
SC
is used for measur-
7