... .3) Engine models: Volvo TD and TAD series4) Alternator: Stamford, Marathon, Leroy Somer are optional.5) Frequency ... manual and documents.2) Optional accessories: oil heater, alternator space heater, communication interface, battery charger, daily fuel ... spare parts for gen set maintenance.Manufacture standard:ISO8528, ISO1105, ISO3046,ISO9001:2000, CE, CCC, GB/T2820, Volvo open diesel generating set