Brushless Alternator 25 kW ( without ERRU/ RRU ), 110 V, V- belt driven and bogie mounted complete, conforming to RDSO Specification No. RDSO/ PE/ SPEC/ AC/ 0056- 2014 ( Rev 1 ). However, the firms may quote for latest Specification/ Drawing with amendment if any issued by RDSO/ ICF/ RCF. The successful tenderer shall supply spare keys equivalent to 50 % of ordered quantity of Brushless alternators i.e., one spare key for two alternators.