Note the following when connecting the current transformer
Note the following when connecting the current transformer:
1) The secondary side of the CT must not be open when used.
When disassembling the meter or relay during use, short circuit the secondary side beforehand. During installation, wiring should be reliable, and fuses should not be installed on the secondary side;
2) One end of the secondary side must be grounded.
Prevent the insulation damage of the primary and secondary side, high pressure into the secondary side, endangering personal and equipment safety;
3) The primary side is connected in series in the line, and the secondary side is connected in series with the relay or measuring instrument.
4) Pay attention to the polarity of the terminal when wiring.
The polarity terminals of the primary and secondary sides of the current transformer are indicated by letters. In accordance with the regulations, the winding terminals of transformers and transformers adopt the "polarity reduction" label method. When the primary current flows in from the same end, the secondary current flows out from the same end.
