Set of protective Relays Conforming to CLW. Spec. No. CLW/ ES/ R- 27/ Z Consisting of Three Items ( I ) QOP 1 & 2 Type DU, AAL Part. no. KA210013 R0064P- 02 Nos. ( ii ) QLM Type DI, AAL No. KA210013R0018M- 01Nos. ( iii ) QRSI 1 & 2 DI, Part. no. KA210013 R0018I- 02 Nos.