Relevant factors to consider when selecting split core current transformers

- Apr 04, 2019-

When selecting an split core current transformers, it is necessary to select the corresponding specification product according to parameters such as primary current and bus cross section. A wire passes through the transformer window. Open the flip cover, make the secondary wiring through the crimping piece, and return the flip cover after the secondary wiring is taken out. Metering electrical energy can be directly sealed with a small hole in the flip cover to prevent electricity theft.

The operating current of the split core current transformers does not exceed 1.1 times of the rated value for a long time, and it is allowed to be used for a short time at 1.2 times of the rated value. The time is not more than 1 h; the rated current ratio is selected according to the magnitude of the current to be measured. The current is about 2/3 of the rated current.

The polarity of the split core current transformers is expressed as: primary wiring mark P1, P2, corresponding secondary wiring signs S1, S2; S1 represents the same name end of P1, and S2 represents the same name end of P2. The measuring instrument is connected to the S1 and S2 terminals. The total load of the connected circuit should not exceed the rated load of the transformer. When the position of the installed instrument is far from the current transformer or the circuit load is large, it should be used twice. The current is 1A. In addition, it is necessary to note that according to the specifications and the number of the busbars, an split core current transformers matching the window size is