Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
Issue 13 December 2000 Safety 4 - 7
Precautions
When working on or using this type of equipment, the following
precautions should be noted:
• This unit must be installed, serviced, and operated only by skilled
and qualified personnel who have the necessary knowledge and
practical experience with electrical equipment and who understand
the hazards that can arise when working on this type of equipment.
• The equipment could be powered by multiple ac inputs. Ensure that
the appropriate circuit protection device for each ac input being
serviced is disconnected before servicing the equipment.
• Batteries may be connected in parallel with the output of the
rectifiers. Turning off the rectifiers will not necessarily remove
power from the bus. Make sure the battery power is also
disconnected and/or follow safety procedures while working on any
equipment that contains hazardous energy/voltage.
• Hazardous energy and voltages are present in the unit and on the
interface cables that can shock or cause serious injury. Follow all
safety warnings and practices when servicing this equipment. When
equipped with certain DC/DC modules and ringer modules,
hazardous voltages will be present on the secondary distribution
board and connector J14. The ES613 plug-in distribution also
contains hazardous ringer voltages.
• In addition to proper job training and safety procedures, the
following are some basic precautions that should always be used:
– Use only properly insulated tools.
– Remove all metallic objects (key chains, glasses, rings,
watches, or other jewelry).
– Wear safety glasses. Fuses can produce sparks. High energy
levels on buses and distribution components can produce severe
arcing.
– Test circuits before touching.
– Lock out and tag circuit breakers/fuses when possible to
prevent accidental turn on.
– Be aware of potential hazards before servicing equipment.
– Identify exposed hazardous electrical potentials on connectors,
wiring, etc. (note the condition of these circuits, especially
wiring).
– Use care when removing or replacing covers; avoid contacting
circuits.
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