supply of zirconium copper stamping and modified zirconium copper stamping for shaft mounted copper stamping type resistance ring design of rotor for traction motor type 6fra-6068 for wag-9/wap-7 locos.zirconium copper stamping and modified zirconium copper stamping for shaft mounted copper stamping type resistance ring design of rotor for traction motor type 6fra-6068 for wag-9/wap-7 locos.,zr. cu. stamping type resistance ring for shaft mounted scheme- i rotor. dr g. no: skel-4738 alt-3, ref.-2, spec. no: rdso/2008/el/spec./0062/rev-3, str no: clw/tm/17700, rev-1. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] , modified zirconium copper stamping for shaft mounted copper stamping ty pe resistance ring design of rotor (scheme-i) for 3-phase tm type 6fra 6068. as per drg. no. 4738 alt-3 ref.1 specification no. rdso/2008/el/spec/0062 rev-3, str no. clw/tm/17700 r ev-1. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]