QUS 1 Ⓡ QUALITY SORGEL THREE PHASE GENERAL PURPOSE TRANSFORMER kVA:112.5. 1 2 3 4 CAT NO: HM112T255NFCU H.V.:480Y/277 H.V. AMPS:135.3 L.V.: 208ZZ/120 L.V: AMPS: 312.3 200 DEGREE C INS SYSTEM, 95 STYLE NO: 34749-17782-001 DATE CODE:0849 ENCLOSURE: TYPE 2 EFF. @ 35% 98.2 H1 H2 HO H3 X2 XQ HO Х0 H2 SQUARE D COMPANY MEETS TP-1-2002 EFFICIENCY Hz: 60 %IZ:4.9 WT:620 CLASS:AA DEGREE C RISE TYPE:SO HI مثلا مسسللنا مسسسلل HJ 234 JUMPER CONNECTION TAP VOLTS 504 480 456 432 LISTED POWER TRANSFORMER (₁) C T$22A 65TS20A MADE IN USA MB2 US The nameplate for the large transformer in the lab is shown below. This transformer supplies the lab, as well as other classrooms in the building. 1. If the supply voltage was low at 455 V instead of 480 V, how could you ensure that the secondary voltage was close to 120/208 V? 2. Assuming an infinite bus on the supply side, use the quick bolted fault calculation to give the low-side bolted fault current. 3. If the transformer is carrying full-load at rated ambient temperature and altitude, what would you expect the inside temperature at the hottest spot of the transformer to be?