33 KV/11 KV;8 MVA;3 PHASE;GROUND MTG;HV PLUG 180 LV PLUG;MINERAL OIL INSULATED; ONAN;DYN 11;C/W VACUUM OLTC 23 TAP POSN; ATTACHED RADIATORS AT JOB SITE;INCLUDING DESIGN;50 HZ;LOCAL SUPPLY TRANSFORMER REDUCED SOUND LEVEL SKID MOUNTED;TWO WINDING TRANSFORMER;EACH COMPLETE WITH VACUUM ON-LOAD TAP-CHANGING EQUIPMENT; MANUFACTURE,TEST,SUPPLY,DELIVER,UNLOAD AND INSTALL MODIFIED TECH SPEC ITEM 2 - HAVING A REDUCED SOUND LEVEL ONAN RATING