Grounding The Cabinets; Figure 6-2 Connecting Cabinets To Ground (Multiple Cabinets In A Row); Figure 6-3 Example Of Base Insulation - Hitachi S10VE User Manual

6. Installation

6.3 Grounding the cabinets

When installing multiple cabinets in a row, daisy-chain the grounding cables as shown in Figure 6-2, and
connect the last grounding cable to ground via a ground bar.
Cabinet 1

Figure 6-2 Connecting cabinets to ground (multiple cabinets in a row)

Because each cabinet is grounded at a single point, the cabinet must be insulated from the base.
Figure 6-3 shows an example of insulating the base.
Spring washer
Cabinet 2
Grounding cables (22 mm
Ground bar
At least class D grounding with the
ground resistance of 100Ω or less
Bolt
Washer
Insulating bush
Insulating
plate

Figure 6-3 Example of base insulation

6-2
Cabinet 3
2
Door
Cabinet frame
Base
Cabinet
grounding point
Insulating plate
Base
braided wire)