Configuration Requirements for Split Core Current Transformers

1. The configuration of Split Core Current Transformers should try to avoid the dead zone of the main protection. The position where the protection is connected to the secondary winding of the transformer should avoid the dead zone of the protection when a fault occurs inside the transformer when a set of protection is deactivated and the protected main equipment continues to operate.

2. The configuration of Split Core Current Transformers should be able to reliably protect various types of faults in the system. In general, in the grid with the neutral point effectively grounded, three-phase current transformers should be configured; in the non-effectively grounded grid, according to the protection The performance of the device, in order to ensure that when two-phase grounding faults occur at two different points, only one faulty element can be cut off with 2/3 chance, and the reliability of power supply can be improved, and two-phase or three-phase current transformers can be configured.

3. In order to reliably protect various parts of the main equipment, in general, each main equipment is equipped with at least one group of Split Core Current Transformers. Under the premise that reliable protection can be achieved, the number of transformers should be reduced as much as possible, and the number of transformer secondary windings should be increased if necessary.

4. The number of secondary windings and their technical characteristics should meet the requirements of relay protection, automatic devices, measuring instruments, and electric energy measuring devices.

It can be seen from this that Split Core Current Transformers also have many requirements for configuration. For this reason, we must pay attention to the above requirements when configuring them. As long as the above requirements are met, it can be guaranteed. Normal use.