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GMC 太阳能光伏IV曲线测试仪

• Generator voltage up to 1000 V DC, current up to 20 A DC
• Measurement of short-circuit current ISC, open circuitvoltage UOC, instantaneous peak power of a solar cell Pmax,internal series resistance RS, and internal parallel resistance RP
• Automatic conversion of momentary measured values to STC
• Patented calculation process for evaluating PV generatorswithout knowledge of the manufacturer’s specifications.
• Patented calculation process for determining the generator’sinternal series resistance based solely on a measured charac-teristic I-U curve.
• Separate measurement of temperatures at the irradiation sen-sor and the back of the module for increased measuring
accuracy.
• High level of intrinsic safety thanks to included load discon-nector (1000 V/32 A DC) for all-pole disconnection of the measuring instrument from the PV generator
• Calibrated irradiation sensor per IEC/EN 60904-2 with inte-grated Pt1000 temperature sensor
• Integrated customer database with bidirectional data exchange
• Integrated module database with bidirectional data exchange

• Software for graphic visualization, evaluation and report generationwith integrated database


Applications
The PROFITEST PV allows for the measurement of characteristicI-U curves, as well as individual photovoltaic modules and strings.With the help of a patented process, the instrument is capable ofascertaining peak power, internal series resistance and internalparallel resistance directly on-site “with only one measurement andwithout entering module data”, which are then indicated at a high-resolution color graphic touch-screen which is suitable for use insunlight. Troubleshooting in PV systems, as well as documenta-tion of system quality, are executed quickly and economically dur-ing initial start-up and subsequent testing without a long learningcurve. This simple yet decisive test assures safety for the cus-tomer and eliminates consequential costs for the installer. Mea-sured peak power can, for example, also be used in order todetermine peak ratio. Beyond this, acquired characteristic curvesmake it possible to draw further conclusions regarding the electri-cal characteristics of the measured module or string. And thus theinstrument is also suitable for R&D.


Features
• Internal data memory for up to several thousand measurements
• Acquired characteristic I-U curve is highly accurate thanks tosteady measurement at the capacitive load
• Displayed (calculated) values: peak power P Pk , internal seriesresistance R S , internal parallel resistance R P , instantaneousvalues: U pmax , I pmax , P max , U OC , I SC , FF, T mod , T ref , E TRMS

• Power and temperature measurement via four-conductorcable for error-free results
• Sensors for irradiation and temperature are integrated bymeans of analog technology with a rugged data transmissionline. As a result, irradiation can always be measured in real-time, and irradiation fluctuations are reliably detected withinthe millisecond range. As a rule, measurement data cannot betransmitted continuously with solutions based on radio trans-mission, and thus only a snapshot is provided. However, irra-diation typically changes by up to several hundred W/m 2 evenin the millisecond range.
• Continuous display of momentary irradiation and temperatureprovides information regarding measuring conditions.
• Universal input allows for use with commercially available irra-diation reference sensors, assuring trouble-free on-site use ofadapted sensors and sensor replacement.
• Operation of the PROFITEST PV via a PC with direct import of
results (e.g. for continuous measurement)
• External power pack with broad-range input for charging thebatteries, and for continuous operation of the measuringinstrument
• Open interfaces allow for operation of the instrument in spe-cial applications as well
• High level of intrinsic safety thanks to included load discon-nector (1000 V / 32 A DC)