Photovoltaic in grid-connected operation Expansion module for ET 250 with components for grid-connected usage of solar electricity Features - unit with practical components for grid-connected usage of solar electricity - inverter providing grid control and maximum power point tracking - modern twoway energy meter for capture of energy transferred to and from the mains grid - dimmable halogen lamp for experiments under varying electrical load Learning objectives/experiments - familiarisation with components from grid-connected use of photovoltaic power - functioning of a DC switch-disconnector and over voltage protection - functioning of a grid-connected inverter with maximum power point tracking - dependence of the inverter efficiency on the workload - function of modern energy meters Specification [1] extension for ET 250 Solar Module Measurements [2] electrical components for grid-connected usage of photovoltaics [3] combiner box with DC switch-disconnector and over voltage protection [4] inverter for grid operation with maximum power point tracker [5] two way energy meter connecting to the mains grid [6] socket with energy meter for own consumption [7] dimmable halogen lamp for experiments under varying electrical load Technical data DC switch-disconnector - max. current: 30A - rated voltage: 1000V Over voltage protection - rated impulse current 20kA Inverter for mains grid operation - rated input power: 150W - max output power: 125W - max. efficiency: 89% Two way energy meter - rated frequency: 50Hz - rated voltage: 230V 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase 230V, 60Hz, 3 phases UL/CSA optional LxWxH: 570x320x820mm Weight: approx. 28kg