GE Industrial Solutions Galaxy Power Systems - Manual (Page 32)

Installation Guide for Galaxy Power Systems
2 - 8 Safety Issue 12 August 2012
Precautions, continued
• 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 the batteries, that are typically used in
telecommunications utility rooms can operate at high current levels.
Personnel with electronic medical devices need to be aware of their
restrictions when working around electricity.
• In addition to proper job training and safety procedures, the
following are some basic precautions that should always be used:
– 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.
– Use only properly insulated tools.
– Remove all metallic objects (key chains, glasses, rings, watches,
or any other jewelry).
– Wear safety glasses.
– Test circuits before touching.
– Lock out and tag any 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 any
wiring).
– Use care when removing or replacing any covers; avoid
contacting any circuits.
Note: Refer to Section 15, Power Up and Installation Completion, for
precautions and proper methods for handling rectifiers and converters.