Is intended for a control of parameters of solar cells and solar batteries including in vivo.

Technical parameters

Range of gauged powers, Volt 0,6;1,5;6;9;15;30;60
Range of gauged currents, A 0,01;0,05;0,1;0,5;1
The class of accuracy 1,0
Power of dispersion, W 60
Possibility of orientation Is present
Resistance of load, Ohm 0-1500
External power supply It is not required
Critical dimensions, mm 25019090
Mass of the instrument, kg, unpacked, no more 0,8

The device allows to measure and to inspect parameters of solar batteries and solar cells in vivo. In case of measurement of parameters of a solar cell, last is installed on a mount, which allows to orient a solar cell to perpendicularly incident solar rays. It is easy to use in field conditions and in laboratories. The device allows to measure a volt-ampere characteristic and efficiency of a solar cell and solar battery (module) with the help of a variable resistance. The device can be useful to research of the characteristics of accumulators, galvanic batteries and other devices. The solar cells and solar batteries metered by this instrument can be used as the measurement standards in production and laboratories.

PV modules are rated at a well- defined set of conditions known as Standard Test Conditions (STC). These conditions include the temperature of the PV cells (25 C or 77 F.), the intensity of radiation (1 kW/square meter), and the spectral distribution of the light (air mass 1.5 or AM 1.5, which is the spectrum of sunlight that has been filtered by passing through 1.5 thicknesses of the earth's atmosphere). These conditions correspond to noon on a clear sunny day with the sun about 60 degrees above the horizon, the PV module directly facing the sun, and an air temperature of 0 C (32 F). In production, PV modules are tested in a chamber known as a flash simulator. This device contains a flash bulb and filter designed to mimic sunlight as closely as possible. It is accurate within about 3 1%. Because the flash takes place in only 50 milliseconds, the cells do not heat up appreciably. This allows the electrical characteristics of the module to be measured at a single temperature, the ambient temperature of the module/factory. Since this temperature is usually close to 25 C, a minor adjustment corrects output characteristics to the 25-degree standard temperature.

Very much often service conditions do not correspond to Standard Test Conditions (STC) because of local geographical and climatic features and consequently important to know the substantial characteristics of solar batteries and PV modules. Sometimes PV modules can change parameters, therefore device permitting to inspect an output characteristics of solar batteries is simply irreplaceable in field conditions.