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Lightning Protection
Magnetic Compatibility
Static Discharge
8
IBM 8265: Planning and Site Preparation Guide
Power Lines
You should add lightning protection on your redundant power source when:
•
The utility company installs lightning protectors on the primary source.
•
The area is subject to electrical storms or equivalent power surges.
Signal Lines
You are responsible for selecting and setting up lightning protection, if needed.
In some instances, the site chosen for setup of the 8265 may have surrounding
magnetic fields.
These fields can result from nearby radio-frequency sources, such as transmitting
antennas (AM radio, FM radio, television, and two-way radios), radar, and industrial
equipment (radio-frequency induction heaters, arc welders, and insulation testers).
Other sources of interference are transformers (including those within other units),
distribution displays, rotating machinery, fluorescent light fixtures, and electric floor
heating.
Check with your building engineer or get help in identifying possible sources of
magnetic interference at the site you choose to set up the 8265.
Before positioning control units or cabling, a setup planning review may be
appropriate to evaluate the environment and to determine whether any special setup
or product considerations are required to ensure normal system operation and
maintenance. Consult your IBM representative or LAN installation provider.
Static charges can build up on buildings and people as a result of:
•
Movement of personnel, carts, or furniture in contact with floor covering
•
Personnel in contact with furniture coverings, such as plastic seat covers.
Discharge of these static charges to the metal parts of the 8265, or on the furniture to
which it is situated, may cause interference with the operation of the electronic
equipment.
Major factors that contribute to this problem include:
•
High-resistance floor surface material
•
Carpeting without antistatic properties
•
Plastic seat covering
•
Very low humidity (usually less than 20%)
•
Metal-framed furniture.
If any of the previous factors are present at your site, review the building with your IBM
representative or LAN installation provider.
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