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power transformer 300MVA 220kv assembled transformer
power transformer 300MVA 220kv assembled transformer
 
 
 
 
 
 

220kv power transformers were used in 230kv or 252kv power system. 

220kv power transformer:

Feature:

 220kv on-load-tap-changing power transformer is made of high-quality silicon-steel sheets,and laminated by steps,it is advantageous in low loss,low noise ,low voltage partial discharge and high anti short circuit  capacity.the dynamical and thermal stability of this transformer ,of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure.the transformer tank used wave form shell.has very nice appearance ,the core is with D shape yoke and 45 angle seaming,the core and oil box are well fixed .

 

500420000/220kv series three phase duplex winding regulating transformer with load:

Rated capacity (KVA) Voltage connction 9-type KW 10-type KW 11-type KW No-load current Impedence voltage(%)
H.V L.V No- Load-Loss No- Load-Loss No- Load-Loss (%)
(KV) (KV) Load Loss Load Loss Load Loss  
           
31500   6.3   35 135 31.5 128.3 28 128.3 0.7  
40000   6.3   41 157 36.9 149.2 32.8 149.2 0.7  
50000   10.5   49 189 44.1 179.6 39.2 179.6 0.65  
63000   11   58 220 52.2 209 46.4 209 0.65  
75000   10.5   67 250 60.3 237.5 53.6 237.5 0.6  
90000   11   77 288 69.3 273.6 61.6 273.6 0.55  
120000 220 11   94 345 84.6 327.8 75.2 327.8 0.55  
150000 240 13.8 YNd11 112 405 100.8 384.8 89.6 384.8 0.5  
160000 ±2×2.5% 11   117 425 105.3 403.8 93.6 403.8 0.49  
180000   13.8   128 459 115.2 436.1 102.4 436.1 0.46 12~14
240000   15,75   160 567 144 538.7 128 538.7 0.42  
300000   18   189 675 170.1 641.3 151.2 641.3 0.38  
360000   20   217 774 195.3 735.3 173.6 735.3 0.38  
370000   15.75   221 790 198.9 750.5 176.8 750.3 0.38  
400000   18   234 837 210.6 795.2 187.2 795.2 0.35  
4200000   20   242 868 217.8 824.6 193.6 824.6 0.35  
 31500180000/220kv series three phase duplex winding regulating transformer with load:        
Rated capacity (KVA) Voltage connction 9-type KW 10-type KW 11-type KW No-load current Impedence voltage(%)
H.V L.V No- Load-Loss No- Load-Loss No- Load-Loss (%)
(KV) (KV) Load Loss Load Loss Load Loss  
           
31500 220 6.3 YNd11 38 135 34.2 128.3 30.4 128.3 0.7  
40000 240 10.5 45 157 40.5 149.2 36 149.2 0.63  
50000 ±2×2.5% 35 54 189 48.6 179.6 43.2 179.6 0.56 12-14
63000   38.5 63 220 56.7 209 50.4 209 0.56  
90000   10.5 80 288 72 273.6 64 273.6 0.49  
120000   11 99 346 89.1 328.7 79.2 328.7 0.49  
150000   35 116 405 104.4 384.8 92.8 384.8 0.42  
180000   38.5 135 468 121.5 444.6 108 444.8 0.42  

 

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