supply of metal oxide gapless type lightening arrester assemblymetal oxide gapless type lightening arrester assembly,42 kv , 10 ka, class-iii metal oxide gapless type lightening arrester assembly as per rdso specification no. ti/spc/psi/ mogtala/ 0101 (02/2015) or latest [ warranty period: 30 months after the d ate of delivery ] ] , 120kv , 10ka metal oxide gapless type lighting arrestor as per rdso specificatio n no.eti/psi/137(8/89) with a&c slip no.1 to 7 . 1 rating : 60kv, 10ka (2 parts a&b). 2.long durati on discharge class:3. 3.type lmas. 4.rated frequency : 50hz. 5.pressure relief class: 40ka (rm s). 6.max. continuous operating voltage: 51kv rms [ warranty period: 30 months after the date of delivery ] ]