Based on aluminum, it is a
transformer that poses a copper coil with an aluminum coil (semi-copper and half aluminum, aluminum foil). Two major categories of three-phase drying power transformers and oil immersive power transformers involve. Analysis believes that the biggest feature of such cases is that illegal behavior is very hidden.
1) Due to the special production process of the
transformer, even the aluminum coil transformer, the terminal is connected with a copper-aluminum joint, and is wrapped by an insulating material, straight view, the exposed terminals are copper. If you don't look at the processing process, you only look at the terminals and the appearance of the finished product, it is difficult to distinguish the copper coil transformer or an aluminum coil (semi-copper and half aluminum, aluminum foil)
transformer, only the decomposition product can be confirmed.
2) If the transformer is broken down, the problem involved is high, tens of thousands, or even hundreds of thousands, and the decomposition law enforcement will bear great value risks, so that law enforcement people don't dare to train.
3) The transformer is reasonable to design a reasonable design, and the transformer cannot be detected by the technical parameter indicator to detect the variable transformer or an aluminum coil (semi-copper and half aluminum, aluminum foil). 4) Enterprises produce aluminum coils (semi-copper and half aluminum, aluminum foil) charging coil transformers such illegal individuals are only critical, belong to enterprise "high-level confidentiality". Therefore, illegal behavior is very hidden.