HT Instruments I-V400W

Immediate recording of the I-V characteristic and of the characteristic parameters

I-V400 carries out the field measurement of the I-V characteristic and of the main characteristic parameters both of a single module and of module strings on PV plants (up to a maximum of 1000V and 10A).

Immediate compliance test result

The acquired data are then processed to extrapolate the I-V characteristic under standard test conditions (STC) in order to proceed comparing them with the rated data declared by the modules’ manufacturer, thus immediately determining whether or not the string or the module under test comply with the characteristics declared by the manufacturer. On the other hand the analysis of IV curve permits to detect any fault condition on each single module composing the string under test.

Remote irradiation and temperature measurement

Irradiation and temperature measurements play an essential role for extrapolation of the I-V characteristic under standard test conditions. I-V 400 carries out such measurements directly or under remote mode through the optional unit SOLAR-02, synchronized with main unit. I-V 400 can effect measurements at the inverter, while SOLAR-02 simultaneously detects environmental values close to modules without using long cable extensions.

Friendly use with possibility of continuous updating of PV modules

I-V 400 manages a database of PV modules, which can be updated at any time both via the management software and directly on the instrument through the user interface.

Very accurate measurements even using cable extensions

Current and voltage measurements on modules or strings are effected with the 4-terminal method, which allows extending measuring cables

• I-V Curve tracer
• Voc and Isc measurement
• Database of 30.000 PV modules curve types
• Measurement of output voltage from module/string up to 1000V DC
• Measurement of output current from module/string up to 10A DC
• Measurement of solar irradiation [W/m2] with reference cell HT304N
• Measurement of temperature, automatic or by means of probe PT300N
• Measurement of output DC and nominal power from module/string
• Numerical and graphical display of I-V characteristic
• Measurement of the resistance of photovoltaic module series
• Mechanical inclinometer for incidence angle of solar irradiation
• 4-terminal measuring method
• Comparison with standard conditions (STC 1000 W/m2, 25°C)
• Evaluation of testing result: OK / NO
• Management of up to 30 types of modules in the internal database
• Internal memory for data saving
• Recalling results on the display
• Optical/USB port for PC connection
• Help online on the display