ET 250Solar Module Measurements Didactic Equipment Vocational Training Equipment Renewable Training Equipment
Determining the characteristic parameters of a photovoltaic system Features - two pivotable solar modules on mobile frame - series and parallel connection - adjustable electrical load - measuring amplifier for current, voltage, illuminance and temperature - suitable for sunlight and artificial light - expandable with the experimental units ET 250.01 and ET 250.02 Learning objectives/experiments - physical behaviour of solar modules under a variety of effects -- illuminance -- temperature -- shading - familiarisation with key parameters -- short-circuit current -- open-circuit voltage -- current at maximum output -- voltage at maximum output - relationship between module inclination, illuminance, short-circuit current and electrical output - recording a module's current-voltage curve - determining the efficiency - connection types for the modules -- series connection -- parallel connection - how cells covered by shadow affect the current-voltage curves Specification [1] trainer for solar module measurements [2] 2 pivoting solar modules on mobile frames [3] series and parallel connection options [4] slide resistor as variable load [5] 2 power resistors for expanding the measuring range [6] measuring amplifier with digital displays for current, voltage, illuminance and module temperature [7] reference cell as illuminance sensor Technical data Module design - number of cells: 36 - cell material: monocrystalline silicon - module area: 0,64m2 Typical module parameters under STC (Standard Test Conditions) - max. output: 85W - short-circuit current: approx. 5,3A - open-circuit voltage: approx. 22V Slide resistor: 0...10Ω Two power resistors: 22Ω/50W Measuring ranges - temperature: 0…100°C - voltage: 0...200V - current: 0...20A - illuminance: 0...3kW/m2 - inclination: 0...90° 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1400x800x1490mm Weight: approx. 93kg
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