External lighting and signalling devices for mechanic vehicles, trailers and semitrailers. Light and colour characteristics. Norms and methods of tests
United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Automatic overfrequency protection devices. Norms and requirements
Pattern plates with changeable wooden inserts for moulding box having inside dimensions 2500x2000 mm for moulding foundry machines with turn of half mould without squeezing. Design and dimensions
€10
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