Publicité
•
A dangerous potential is always present in the photovoltaic system.
•
The maximum voltage between the inputs is 1000VDC. Do not measure voltages that exceed the
limits expressed in this manual.
•
The maximum current that can be tolerated by the instrument is 20A DC. Do not perform tests on
strings of PV modules connected in parallel
•
Before making any measurements, ensure that the potentials present in the circuit under test are
compatible with the safety and range characteristics of the instrument.
•
IEC/EN62446-1 requires measurements to be made string by string. It is recommended to test one
string at a time according to the requirements of the standard
•
Before connecting measurement cables to the circuit under test, check that the desired function
has been selected
•
Never perform tests on PV modules or strings connected to the DC/AC converter
•
Never perform insulation and continuity tests on modules or strings connected to the DC/AC
converter
•
Always make sure to connect and disconnect measurement cables after sectioning the system and
verifying the absence of voltage
•
Always verify correct polarity of cables (positive and negative)
•
Never perform I-V curve, Insulation and Continuity tests with the instrument connected to the mains
power supply
•
Do not disconnect cables during measurement
•
CAUTION: For electrical connections, use only the supplied cables or, if necessary, cables with
suitable characteristics and certifications.
•
In case the connection for measurement is made with cables other than those supplied, use
cables with minimum safety characteristics indicated in the instruction manual, and the shortest
possible length so as not to affect the accuracy of the result.
•
In the case of a large distance between the instrument and the remote unit, it is recommended to
perform sicronization by placing the instrument close to the remote unit itself and then taking the
measurement at the desired distance
•
Waiting time for synchronization: wait a couple of minutes after turning on the instrument before
performing the first of synchronization.
•
Synchronization is only possible if the distance between the instrument and the remote unit is
such that there is a stable Wi-fi connection. The limiting distance between the instrument and
remote unit is affected by obstacles, air humidity, etc., so it can only be estimated in the order of a
few meters.
•
In I-V and ISO tests, the instrument absorbs energy with each measurement, and over a series of
continuous measurements, its internal temperature gradually increases. If the internal
temperature continues to rise, the internal temperature sensor is activated and the instrument
stops measurements, displaying the related error message.
If these conditions are expected, arrange in advance to minimize the temperature rise. Shelter the
instrument from direct sunlight, elevate it from hot surfaces, and allow more time to elapse
between I-V/ISO scans.
DURING USE
11
Publicité
