Supply Of Universal Type Over Voltage Protection (ovp) Unit For 4.5 Kw Rru Conforming To Rdso Specn. No. Rdso/pe/spec/tl/0054-2003 (rev-0) With Amendment No.1 & 2 As Per Rdso Smi No.rdso/pe/ms/tl/0021-2004 (rev.1)