Key points of switchgear installation

The installation position of the electrical components is in accordance with the design drawings, and the installation is firm and reliable;

1. The sectional area of the primary line meets the requirements of the drawing;

2. The copper busbars of the primary line are tin-plated at the joint office, and the contact area meets the requirements;

3. The first-line connection screws are fastened and reliable, and the contact resistance meets the requirements;

4. Phase sequence arrangement: from the front, from left to right, from top to bottom, and from far to near as A, B, C;

5. The electrical clearance is greater than -10mm, and the creepage distance is greater than 25mm;

6. The ground row and zero row should be installed according to the drawings;

7. All kinds of micro notes are available and good;

8. The opening and closing operation of the switch is flexible and reliable without hindrance;

9. The wiring of the secondary line is in accordance with the design drawing, and the power-on attempt is correct;

10. Power frequency withstand voltage: 2kV/min, no flashover, no breakdown.