Supply of High Frequency Electronic Ballast For Use On 25Kv Ac Electric Locomotives & Suitable For 4 Pin, 110Vdc 80 To 140, 11 Watts, Frequency Range: 20 To 30Khz, Input Current Max 120Ma, Tem P: 0 To 70 Degrees. Clw Specn. No. Clw/Es/Sk-1/L-22/D Or Latest, Ref:3B Warranty Period: 30 Mon Ths After The Date Of Delivery Quantity Tolerance +/-: 5 %Age, Item Category : Normal, Total Po Value Variation Permitt Ed: Max 8 Lacs