GE Industrial Solutions BDCBB H569-445 - Manual (Page 8)

Secondary DC Power Distribution Bay H569-445
Issue 3 June 2012 8
Precautions
Read and follow these precautions.
• General precautions:
• Use only properly insulated tools.
• Remove all metallic objects (key chains, glasses, rings, watches, other jewelry, etc.).
• Wear safety glasses.
• 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.
• Use a personal ESD strap when accessing or removing electronic components.
• The equipment must be installed, serviced, and operated only by skilled, 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.
• Exercise care and follow all safety warnings and practices when servicing this equipment. Hazardous
energy and voltages are present in the unit and on the interface cables that can shock or cause
serious injury.
• 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.
• Electricity produces magnetic fields that can affect implanted medical electronic devices, such as
pacemakers. The strength of the magnetic field depends on the amount of current in the circuit, as
well as other conditions (such as number of conductors, placement, and distance from the
conductor). DC power and distribution systems, including batteries, can operate at high current
levels. Personnel with electronic medical devices need to be aware of their restrictions when
working around electricity.