Máy Đo Phân Tích Đường Cong I-V Và Công Suất Chuỗi Tấm Pin Năng Lượng Mặt Trời PROFITEST PV 1500 GOSSEN METRAWATT

Máy Đo Phân Tích Đường Cong I-V Và Công Suất Chuỗi Tấm Pin Năng Lượng Mặt Trời PROFITEST PV 1500 GOSSEN METRAWATT

1.  Generator voltage up to 1500 V DC, current up to 20 A DC
2. Measurement of short-circuit current ISC, open circuit voltage UOC, instantaneous peak power of a solar cell Pmax, internal series resistance RS and internal parallel resistance RP
3. Automatic conversion of momentary measured values to STC
4. Patented calculation process for evaluating PV generators without knowledge of the manufacturer’s specifications
5. Patented calculation process for determining the generator’s internal series resistance based solely on a single characteristic IU curve
6. Separate measurement of temperatures at the irradiation sensor and the back of the module for increased measuring accuracy
7. High level of intrinsic safety thanks to included load disconnector (1500 V/20 A DC) for all-pole disconnection of the measuring instrument from the PV generator
8. Calibrated irradiation sensor per IEC/EN 60904-2 with integrated Pt1000 temperature sensor
9. Integrated customer database with bidirectional data exchange
10. Integrated module database with bidirectional data exchange
11. Software for graphic representation, evaluation, error analysis and documentation with integrated database

Applications

The PROFITEST PV 1500 permits measurement of characteristic
I-U curves for individual photovoltaic modules, and for strings as
well.
With the help of a patented process, the instrument is capable of ascertaining peak power, internal series resistance and internal parallel resistance directly on-site “with only one measurement and without entering module data”, which are then displayed at a high resolution color graphic touch-screen which is suitable for use in
sunlight. Troubleshooting in PV systems, as well as documentation of system quality, are executed quickly and economically during initial start-up and subsequent testing without a long learning curve. This simple yet decisive test assures safety for the customer and eliminates consequential costs for the installer. Measured peak power can, for example, also be used in order to determine performance ratio. Beyond this, acquired characteristic curves make it possible to draw further conclusions regarding the electrical characteristics of the measured module or string. And thus the instrument is also suitable for R&D

Features

1. Internal data memory for up to several thousand measurements
2. The acquired characteristic I-U curve is highly accurate thanks to consistent measurement at the capacitive load.
3. Displayed (calculated) values: peak power PPk, series resistance RS, internal parallel resistance RP, instantaneous values: Upmax, Ipmax, Pmax, UOC, ISC, FF, Tmod, Tref, ERMS
4. Power and temperature measurement via four-conductor cable for error-free results
5. Sensors for irradiation and temperature are integrated by means of analog technology with a rugged data transmission line. As a result, irradiation can always be measured in realtime, and irradiation fluctuations are reliably detected within the millisecond range. As a rule, measurement data cannot be transmitted continuously with solutions based on radio transmission, and thus only a snapshot is provided. However, irradiation typically changes by up to several hundred W/m2 even in the millisecond range.
6. Continuous display of momentary irradiation and temperature provides information regarding measuring conditions.
7. The universal input permits use with commercially available irradiation reference sensors, assuring trouble-free on-site use of adapted sensors and sensor replacement.
8. Operation of the PROFITEST PV 1500 via a PC with direct import of results (e.g. for continuous measurements)
9. External power pack with broad-range input for charging the batteries, and for continuous operation of the measuring instrument
10. Open interfaces permit operation of the instrument in special applications as well
11. High level of intrinsic safety thanks to included load disconnector (1500 V / 20 A DC)