A. 49.5Hz B. 49.2Hz C. 49.0Hz D. 48.5Hz
A. G:10KV ;T1:10/242KV ;T2:209/121/38.5KV ;T3:33.25/6.3KV B. G:10.5KV ;T1:10.5/231KV ;T2:209/115.5/36.75KV ;T3:33.25/6.3KV C. G:10.5KV ;T1:10.5/230KV ;T2:230/115/37KV ;T3:37/6.3KV D. G:10.5KV ;T1:10.5/242KV ;T2:220/121/38.5KV ;T3:35/6.3KV