Installation and commissioning process of low-voltage switchgear

Installation and commissioning process of low-voltage switchgear

6. Assembly and commissioning

   6.1 Assembly of housing and door

   6.1.1 The components of the low-voltage switchgear must be assembled according to the product drawings busbar punch.

   6.1.2 The dimensions of the assembled housing shall comply with Table 2.

                table2                      The unit is mm

Shell size range	Deviation
	Shell height	Shell width	Shell depth
400～1000	—	0 -1.4	±1.5
＞1000～2000	±2.2	0 -2.3	±2
＞2000～3000	±2.7	—	—

6.1.3 The diagonal deviation of each side is not greater than that specified in Table 3.。

  Table3               The unit is mm  

Diagonal size range	Absolute value of nodal line deviation
	side	Behind	Underside
500～1500	2	3	3
＞1500～2000	3	4	4
＞2000～3000	4	5	—

6.1.5 The allowable deviation of the gap between door and door, door and baffle shall comply with Table 4。

                                

Table 4                      The unit is mm

Size range	Part
	Deviation of the same gap	Parallel gap deviation
≤1000	1	1
＞1000	2.5	2.5

6.1.6 The opening of the door should be flexible, the opening angle should not be less than 900, and the paint layer and the wire should not be damaged during the opening and closing process.

   6.1.7 The paint color of the door, panel and shell of the product must be the same. The color of the same batch of products should be the same. The color of the product should meet the order requirements. If it does not meet the requirements, it should be selected.

   6.1.8 The nameplate, technical data and sign of the product shall be installed firmly, flat and upright. The mounting screws should be tightened one by one.