HP Scitex FB7600 Essential Health and Safety Instructions Rev.C - Page 39

Power Line Disturbances, Surge Protection, Grounding

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Power Line Disturbances • Reliable operation of the FB7600 computer system depends on the availability of relatively noise-free AC power. • Lighting, line faults, or the power switching commonly found in machinery in factory environments can generate line transients that far exceed the peak value of the applied voltage. If not reduced, these microsecond pulses can disrupt system operation. • Voltage transients must be tested when all machinery and air-conditioning equipment are operating normally and the FB7600 system is turned on. Voltage spikes should not exceed +5 or -10%. • All potential noise-generating equipment (e.g. fans, fluorescent lighting and air-conditioning systems) must be kept separate from the power source used for the FB7600 printer. Surge Protection • The end-user facility should provide the proper surge protection, which will be suitable for their specific installation. • In order to ensure optimum performance and reliability, the FB7600 printer should be protected from variations in line voltage, which are common to production printing environments. Power lines should be regulated accordingly, using a dedicated power conditioning unit, unless the lines are centrally regulated. The air-conditioning unit should include a surge protector in order to avoid lightning damages. Grounding The FB7600 printer must be connected to a special ground line in order to protect the operator and the printer and minimize electrostatic affects. Grounding equipment for the FB7600 printer and all connecting equipment must be installed to ensure smooth and trouble-free operation. The following grounding requirements must be fulfilled: • Grounding wires should be insulated and at least equal in size to the phase conductors. • Ground impedance must be less than 0.1 ohms. • The installation of a single point and dedicated ground. • Power stabilizer equipment that is supplied by three uninterrupted phase wires and one uninterrupted copper ground wire from the main building service panel. These should run in the same conduit and should be at least equal in size to the phase wires. 31

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31
Power Line Disturbances
•
Reliable operation of the FB7600 computer system depends on the
availability of relatively noise-free AC power.
•
Lighting, line faults, or the power switching commonly found in machinery
in factory environments can generate line transients that far exceed the
peak value of the applied voltage. If not reduced, these microsecond pulses
can disrupt system operation.
•
Voltage transients must be tested when all machinery and air-conditioning
equipment are operating normally and the FB7600 system is turned on.
Voltage spikes should not exceed +5 or -10%.
•
All potential noise-generating equipment (e.g. fans, fluorescent lighting
and air-conditioning systems) must be kept separate from the power source
used for the FB7600 printer.
Surge Protection
•
The end-user facility should provide the proper surge protection, which
will be suitable for their specific installation.
•
In order to ensure optimum performance and reliability, the FB7600 printer
should be protected from variations in line voltage, which are common to
production printing environments. Power lines should be regulated
accordingly, using a dedicated power conditioning unit, unless the lines
are centrally regulated. The air-conditioning unit should include a surge
protector in order to avoid lightning damages.
Grounding
The FB7600 printer must be connected to a special ground line in order to
protect the operator and the printer and minimize electrostatic affects.
Grounding equipment for the FB7600 printer and all connecting equipment
must be installed to ensure smooth and trouble-free operation.
The following grounding requirements must be fulfilled:
•
Grounding wires should be insulated and at least equal in size to the phase
conductors.
•
Ground impedance must be less than 0.1 ohms.
•
The installation of a single point and dedicated ground.
•
Power stabilizer equipment that is supplied by three uninterrupted phase
wires and one uninterrupted copper ground wire from the main building
service panel. These should run in the same conduit and should be at least
equal in size to the phase wires.