Gapless Lighting Arrestor For 25 Kv , 50 Htz Ac Elect Locomotive Specn. No. Elrs/Spec/La/0005, July-1999 & Clw Specn.No. Clw/Es/Sk-1/A-12 Alt-D As Above. Specn: Clw Sp Ecn.No. Clw/Es/Sk-1/A-12 Alt-D [ Warranty Period: 30 Months After The Date Of Delivery ] ]