Tender For supply of transitionresistance complete for tap changer n-32 with punched stainless steel g rid as per rdso mod. sheet no. rdso/wam-4/161/20597 or bt part no. s-4407 & drg. no. swt-135041 r 2 or aal part no. g-4407 & drg. no. 9989000040802. [ warranty period: 30 months after the date of deliv ery ]