BS 5000-3:2006 pdf free.Rotating electrical machines of particulartypes or for particular applications – Generators to be driven byreciprocating internal combustionengines – Requirements for resistanceto vibration.
BS 5000-3 This part of BS 5000 specifies requirements for the vibration resistanceof generators, together with their exciters, to be driven by reciprocatinginternal combustion (RIC) engines. The standard is applicable to generators with a maximum continuous rating with outputs greater than0.75 kW or kVA per 1 000 r/min, of the following types:
a) salient pole alternating current generators;
b) cylindrical rotor (distributed field) alternating current generators;
c) direct current generators.
This part of BS 5000 is not applicable to generators intended for use inships, traction vehicles or turbine type machines.
The following referenced documents are indispensable for the application of this document. For dated references, only the editioncited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
BS EN 60034-1:2004,Rotating electrical machines -Part 1 : Ratingand pevformance.
BS EN 60034-22,Rotating electrical machines – Part 22: ACgenerators for reciprocating internal combustion (RIC) enginedriven generating sets.Generators shall be capable of continuously withstanding linear vibration levels with amplitudes of 0.25 mm between 5 Hz and 8 Hz andvelocities of 9.0 mm/s r.m.s. between 8 Hz and 200 Hz when measuredat any point directly on the carcass or mainframe of the generator andon separate pedestal bearing blocks, if fitted. These limits refer only tothe predominant frequency of vibration of any complex waveform.These vibration levels are shown in Figure 1 in terms of amplitude andfrequency.
In special cases, particularly with gas and dual-fuel engines, it may benecessary to calculate the electro-mechanical resonant frequency ofvibration of the combined set to ensure stable operation in the presenceof possible disturbing frequencies from, for example, the mountingsystem, fuel system or torque variations from the engine or load. In suchcases, when specified at the time of the enquiry or order, it is the responsibility of the supplier of the set to ensure that this work iscarried out.The generator manufacturer shall provide the necessaryinformation relating to the generator.BS 5000-3 pdf download.