Transcript
Page 1: CT Calculation Transformer-PCSS

HV side CTTransformer primary 33 KV Rct 1Transformer secondary 0.34 Kv Rr 0.15Transformer rating 1250 KVA Rl 0.32Transformer impedance 0.06 x/% Total 1.47CT ratio HV side 30CT ratio LV side 2500

Primary side CT Sec Side CTTransformer HV current 21.86996990692 A 0.7289989969 ATransformer LV current 2122.673549789 A 0.8490694199 A

Transformer HT fault current 364.4994984487 A 12.149983282 ATransformer LT fault current 35377.89249649 A 14.151156999 A

I(ft) secondary HV side 12.14998328162 AI(ft) secondary LV side 14.1511569986 A

K x I(ft) of HV side 24.29996656325 K is 2K x I(ft) of LV side 28.30231399719 Kis 2

Rct + Rb for HV side 1.47Rct + Rb for LV side 2.24639

V(K) HV CT k x I(ft) x (Rct + Rb) 35.72095084797V(K) LV CT k x I(ft) x (Rct + Rb) 63.57803514015

Page 2: CT Calculation Transformer-PCSS

LV side CT NCTRct 2Rr 0.15Rl 0.09639

2.24639

Page 3: CT Calculation Transformer-PCSS

HV side CTTransformer primary 33 KV Rct 1Transformer secondary 0.34 Kv Rr 0.15Transformer rating 1250 KVA Rl 0.32Transformer impedance 0.06 x/% Total 1.47CT ratio HV side 30CT ratio LV side 2500

Primary side CT Sec Side CTTransformer HV current 21.86996990692 A 0.7289989969 ATransformer LV current 2122.673549789 A 0.8490694199 A

Transformer HT fault current 364.4994984487 A 12.149983282 ATransformer LT fault current 35377.89249649 A 14.151156999 A

I(ft) secondary HV side 12.14998328162 AI(ft) secondary LV side 14.1511569986 A

K x I(ft) of HV side 24.29996656325 K is 2K x I(ft) of LV side 28.30231399719 Kis 2

Rct + Rb for HV side 1.47Rct + Rb for LV side 10.24639

V(K) HV CT k x I(ft) x (Rct + Rb) 35.72095084797V(K) LV CT k x I(ft) x (Rct + Rb) 289.9965471177

Page 4: CT Calculation Transformer-PCSS

LV side CT NCTRct 10 Rct 4Rr 0.15 Rr 0.15Rl 0.09639 Rl 0.09639

10.24639 4.24639


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