HT Instruments I-V400

The I-V 400 measures the I-V curve and key parameters of individual photovoltaic modules or entire systems up to 1000V and 10A. The PV processes and translates data to standard test conditions (STC) for comparison with manufacturer-rated specifications, quickly identifying if modules or strings meet expected performance. The device can also conduct rapid tests for open circuit voltage (Voc) and short circuit current (Isc) even without irradiation. I-V400 includes an internal database of common photovoltaic modules, which users can update via software or directly through the instrument's interface.

Product Info

	Range	Resolution	Accuracy
VDC Voltage @ OPC	5.0 ÷ 999.9 V^***	0.1 V	±(1.0%rdg+2dgt)
IDC Current @ OPC	0.10 ÷ 10.00 A	0.01 A	±(1.0%rdg+2dgt)
Max Power @ OPC (Vmpp >30V, Impp >2A)	50 ÷ 9999 W^,*	1 W	±(1.0%rdg+6dgt)
VDC Voltage (@ STC and OPC), IVCK	5.0 ÷ 999.9 V^***	0.1 V	±(4.0%rdg+2dgt)^,*
IDC Current (@ STC and OPC), IVCK	0.10 ÷ 10.00 A	0.01 A	±(4.0%rdg+2dgt)^**
Max Power @ STC (Vmpp >30V, Impp >2A)	50 ÷ 9999 W^,*	1 W	±(5.0%rdg+1dgt)^** (global)

Accuracy is calculated as ± [% reading + (number of dgts) x resolution] at 23°C ± 5°C, <80%HR
(***) The I-V curve and Rs measurements start for VDC > 15V and the accuracy is defined for VDC > 20V
Vmpp = Maximum power voltage, Impp = Maximum Power Current
(*) Max measurable value of Power must include FF value(~ 0.7) → Pmax = 1000V x 10A x 0.7 = 7000W
(**) Test is stopped and the message “Thermal instability” occurs if the instrument detects Voltage > 700V and Current I >3A, I > - 0.038*V + 37.24 - 0.5