auto-decompression start:
The multi-tap decompression of the autotransformer can not only meet the needs of different load starting, but also obtain a larger starting torque. It is a decompression starting method that is often used to start a large capacity motor. Its biggest advantage is that the starting torque is large. When its winding tap is at 80%, the starting torque can reach 64% of the direct starting, the starting voltage drops to 65% of the rated voltage, and its starting current is full pressure starting. The current is 42% and the starting torque is 42% of the full-pressure starting torque.
The advantage of auto-transformer step-down start-up is that it can be directly controlled by manual operation or automatically controlled by AC contactor. It is durable and low in maintenance cost. It is suitable for all no-load, light-load start-up asynchronous motors and is widely used in production practice. application. The disadvantage is that the manual operation should be configured with a relatively expensive self-coupled transformer box (self-coupled compensator box), and the automatic control should be configured with self-coupled transformers, AC contactors and other starting devices and components.
