HP 3600 v2 Series - Grounding the Switch with a Grounding Conductor Buried in the Earth Ground

• The ground contact in the power outlet is securely connected to the ground in the power distribution
room or on the AC transformer side.
• The power cord is securely connected to the power outlet.
NOTE:
If the
g
round contact in the power outlet is not connected to the
g
round, report the problem and reconstruc
t
the grounding system.
Figure 25 Ground through the PE wire of the AC power supply
(1) Three-wire AC power cable (2) Chassis
rear panel
Grounding the switch with a grounding conductor buried in the
earth ground
If the installation site has no grounding strips, but earth ground is available, hammer a 0.5 m (1.64 ft) or
longer angle iron or steel tube into the earth ground to serve as a grounding conductor.
The dimensions of the angle iron must be at least 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in). The steel tube
must be zinc-coated and its wall thickness must be at least 3.5 mm (0.14 in).
Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion
protection.
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