Double Split Transformer
Keywords:
Double Split Transformer
产品描述
- 产品描述
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- Commodity name: Double Split Transformer
The effect of limiting short-circuit current is significant. When a branch of the split winding is short-circuited, the short-circuit current passes through the half-through impedance. The half-through impedance is equal to the sum of the high-voltage winding and a branch short-circuit impedance, equal to one plus a quarter of the splitting factor, multiplied by the through impedance.
Compared with ordinary transformers, split transformers have the following characteristics:
(1) The effect of limiting short-circuit current is significant. When a branch of the split winding is short-circuited, the short-circuit current passes through the half-through impedance. The half-through impedance is equal to the sum of the high-voltage winding and a branch short-circuit impedance, equal to one plus a quarter of the splitting factor, multiplied by the through impedance. That is to say, the half-through impedance is larger than the through impedance by a quarter of the splitting factor, which is larger than the short-circuit impedance of an ordinary transformer, so the short-circuit current is small.
(2) Conducive to the improvement of the self-starting conditions of the motor. The through impedance of the split transformer is smaller than the short-circuit impedance of the ordinary transformer, so the voltage drop of the transformer when the starting current flows is smaller, allowing the motor to have a larger starting capacity.
(3) When a short circuit fault occurs in one branch of the split winding, the bus voltage drop of the other branch is small, that is, the residual voltage is relatively high, which is the main advantage of the split transformer.
The main disadvantage of split transformers is the high cost.
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