Lifecycle System
Page 96 of 110 HI 803 211 E Rev. 1.01.00
9.1.4 Grounding Connectors
All tangible surfaces of the 19-inch HIMA components (e.g., base racks, extension racks and
dummy front plates) are chromized and electrically conductive for ESD protection reasons.
Safe electrical connection between components and the control cabinet is ensured by cage nuts
with claw fasteners. The claw fasteners penetrate the surface of the pivoting frame [1], ensuring
safe electrical contact. Stainless steel screws and flat washers are used to prevent electrical
corrosion [2].
The components of the cabinet frame [3] are welded together and are considered an electrical
conductive construction element. Short grounding straps [5] with cross-sections of 16 mm
2
or
25 mm
2
are used to conductively connect the pivoting frames, door, mounting rails and
mounting plates to the cabinet frame.
Pivoting frame
Screws, washers and cage nuts
Cabinet frame
2 x M 2500 busbar, see Figure 34
16 mm
2
or 25 mm
2
grounding strap
Figure 33: Grounding Connectors for Racks
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