supply of on load tap changer supply of on load tap changer for wbsetcl 315 mva transformer. , oltc for wbsetcl 315 mva - 140210 on load tap changer with motor drive mechanism. confirming as per the order specification sheet sg0100sc tap changer specification sheet ed/aop15/140210/02 & technical specification sheet pages 9 & 10 of wbsetcl/tech spec/rev.3. modification as per doc. ed/ol/wbsetcl/01.max current : at least 800arated impulse withstand voltage ( in kv, 1.2/50 ):990 rated power frequency withstand voltage ( in kv, 50 hz, 1min ) : 400 no. of poles: 3 unpriced commercial offer clearly mentioning the type of oltc offer & complete set of drawings shall be furnished along with the offer. => limited