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ESDU 77002 provides data for geometric gear design for gear ratios up to 10:1. Guidance on the choice between spur and helical gears is provided by considering the factors of noise, end-thrust and cost. The choice of helix angle, which is influenced by the type of...
This part of IEC 60034 specifies efficiency classes for single-speed electric motors that are rated according to IEC 60034-1 or IEC 60079-0, are rated for operation on a sinusoidal voltage supply and: • have a rated power PN from 0,12 kW to 1 000 kW; • have a rated voltage UN above 50 V up to 1 kV;...
This International Standard establishes requirements for the design qualification of balance-of-system (BOS) components used in terrestrial photovoltaic (PV) systems. This standard is suitable for operation in indoor, conditioned or unconditioned: or outdoor in general open-air climates as...
Definitions, rated characteristics, rules for design and construction, type tests and routine tests, and a guide for voltage tests, after erection on site.