SOLAR CELLS, ELECTRONICAL SENSORS FOR MEASURING SOLAR RADIATION, ELECTRIC CONVERTERS, CURRENT CONVERTERS, CURRENT RECTIFIERS, ELECTRIC RELAYS, ELECTRICAL RELAYS AND TRANSFORMERS, ELECTRIC CURRENT SWITCHES, ELECTRICAL POWER CONNECTORS, ELECTRIC CONNECTORS, DISTRIBUTION TRANSFORMERS, ELECTRIC VOLTAGE TRANSFORMERS, VOLTAGE REGULATORS, STATIC VOLTAGE REGULATORS, ELECTRICAL CONTROLLERS, POWER CONTROLLERS; POWER SWITCHES; SWITCH BOXES
Electrical and Scientific Apparatus