current transformer shorting terminal block

Interface module,now we have connector module series, relay module series, miniature relay module series and soled state relay module series.

1. Measure and protect the current loop: A current transformer is installed in each of the high voltage A and C phases, and the secondary side is designed as two windings. Therefore: the first winding 1TA (accuracy level 0.5) is a common winding for energy metering and measurement. After the A411 and C411 wires of the winding are connected in series with the current coil of the electric energy meter, they are connected to the 1X9 and 1X11 terminals of the protection device (16n) 1X plug-in; the N411 line of the winding is connected to the 1X21 and 1X23 terminals of the 1X plug-in (The current element of the remote control unit RTU is not connected in series). The second winding 2TA (accuracy level 10P15) is a special winding for current protection. The A421 and C421 wires of the winding are respectively connected to the 1X3 and 1X5 terminals of the 1X plug-in protection device (16n); the N421 wire of the winding is connected to the 1X15 and 1X17 terminals of the 1X plug-in. 2. High-voltage zero-sequence current loop (low-current grounding line selection): A special zero-sequence current transformer 3TA is installed at the outlet end of the high-voltage cable to realize single-phase grounding protection. The L431 and N431 wires of the winding are respectively connected to the 1X8 and 1X20 terminals of the 1X plug-in protection device (16n). 3. Low-voltage zero-sequence current loop (single-phase grounding): a current transformer is connected in series at the neutral point of the low-voltage side of the transformer