Electronic Rectifier Cum Regulating Unit (Erru), As Per Rdso Spec. No. Rdso/Pe/Spec/A C/0013-2011, Rev -3 Suitable For 4.5Kw Brush Less Alternator Of 110 Volts Dc Train Lighting System [ W Arranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitt Ed: Max 8 Lacs ] ]