Enterasys S4-Chassis, Hardware Installation Manual

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Attaching the Electrostatic Discharge Wrist Strap
3-14 Chassis Setup
5. Torque screws to 67 inch pounds (± 5%).
National Deviations:
• In Norway, Sweden, and Finland, the same procedure can be used for a permanent protective
earth ground connection as required by their national deviation to IEC 60950, Section 5.1.7.
• In Denmark, the chassis must be installed utilizing a Type B grounded plug.
Attaching the Electrostatic Discharge Wrist Strap
The Electrostatic Discharge (ESD) wrist strap must be attached before handling the power
supplies, fan tray, and modules used in the S8 chassis. In addition, observe all precautions when
handling these modules to prevent damage from electrostatic discharge.
Place the ESD wrist strap on your wrist and plug the other end into the grounding receptacle, at
the top right corner of the chassis, shown in Figure 3 ‐ 11 .
Figure 3-11 ESD Grounding Receptacle
Installing and Removing an S-AC-PS Power Supply
S ‐ AC ‐ PS power supplies provide two power output levels relative to the input power source. The
power supplies draw either 110 Vac 12A or 220 Vac 6A service, providing 1200 or 1600 watts per
power supply, depending upon the electrical infrastructure of the site where the S8 chassis will be
located. Each S ‐ AC ‐ PS power supply requires a dedicated 100 ‐ 240 Vac, 20 Amp earth ‐ grounded
circuit. Power cords shipped with this unit are country ‐ dependent. Each power cord must be
plugged into an independent power circuit.
As you add modules to the S8 chassis, you may be required to install more power supplies.
Additional power supplies can be installed to provide redundancy. This would require
incremental power be added to the base power requirements of the chassis and its components,
depending on the power redundancy you want to support.
In a redundant power configuration, when at least two power supplies are installed, the power
from each is evenly distributed. If one power supply fails, the second power supply assumes the
load. Additional modules share the load as required.