The more unbalanced the load and the longer the wiring, the greater the voltage offset of the device housing to ground. The magnitude of this voltage depends on the load imbalance of the wiring and the length of this line. The TN-C-S system can reduce the voltage of the motor housing to the ground, but it cannot completely eliminate this voltage. When the unbalanced current of the line is large, the zero protection of the electrical equipment is affected by the zero line potential. Out of the PE line, the features of the TN-CS system are as follows.ฤก) Working zero line N is connected with the special protection line PE. ![]() For the temporary power supply of the TN-CS system, if the front part is powered by the TN-C method, and the construction code specifies that the construction site must use the TN-S power supply system, the total distribution box can be divided at the rear part of the system.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |