... alarm shutdown feature. Alternator Feature of Cummins diesel generator sets*IP21-23(NEMA1)enclosure is standard for all ... auto exciter, auto adjustment. Standard Accessory of Cummins diesel generator sets*Common steel base frame ,Circuit breaker, Damper, Exhaust ... Operation manual and document. Optional Accessory of Cummins diesel generator sets*Engine coolant and oil heater, Alternator space heater, ...