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1 General description
1.1
1.1.1 Safety warnings
In order to reach high level of operator safety while carrying out various measurements using
the PV Analyser instrument, as well as to keep the test equipment undamaged, it is
necessary to consider the following general warnings.
• Read this instruction manual carefully, otherwise use of the instrument may be
dangerous for the operator, for the instrument or for the equipment under test!
• Consider warning markings on the instrument!
• If the test equipment is used in manner not specified in this instruction manual
the protection provided by the equipment may be impaired!
• Before conducting any tests or measurements, ensure that the PV strings intended
for measurement are disconnected from the inverter.
• Do not use the instrument and accessories if any damage is noticed!
• Regularly check the instrument and accessories for correct functioning to avoid
hazard that could occur from misleading results.
• Use only Metrel standard or optional test accessories!
• Consider all generally known precautions in order to avoid risk of electric shock
while dealing with hazardous voltages!
• Instrument servicing and calibration is allowed to be carried out only by a
competent authorized person!
• Metrel Auto Sequences® are designed as guidance to tests in order to significantly
reduce testing time, improve work scope and increase traceability of the tests
performed. Metrel assumes no responsibility for any Auto Sequence by any
the selected Auto Sequence. This includes type and number of tests, sequence
flow, test parameters and limits.
• PV sources can produce very high voltages and currents. Only skilled and trained
personnel should perform measurements on photovoltaic systems.
• Safety precautions for working on the roof should be considered.
• In case of a fault in the measuring system (wires, devices, connections, measuring
heavy dust an electrical arc can occur that will not extinguish by itself. Arcs can lead
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