common ground terminal, if an insulated fault References:
happens, there appears the high potential on David. P, Michael N. “Design and Development
the metal cover surface of the equipment 1 so a of Medical Electronic Instrumentation.” John
great amount of
Wiley & Sons, Inc., Hoboken, New Jersey.2005.
(97-102)
John Wiley and Sons, Inc. 111 River Street,
Hoboken, NJ 07030-5774. 2010. (638-673).
Webster
J.
G.
“Medical
Instrumentation
Application and Design.” Fourth Edition.
Random Quiz:
Fig 13
Question 1: What is the main reason to follow
current flows from equipment 1 throughout to
the equip-potential point, and then to the
common
ground
terminal,
as
the
ground
conductor has 2Ω and a great amount of current
is flowing, a potential of 1V appears on the
metal cover of equipment 1, the ground
conductor connected from the equipment to the
equip-potential point is short, so may be
considered an ideal conductor, so electrically the
metal cover of equipment 1, 2 and the equippotential point at the wall is the same point and
the potential is the same, then there is no
potential difference between the metal cover of
both equipment, and for that reason there is no
current flow from equipment 1 to equipment 2,
and there is no hazard for the patient to be
exposed to ventricular fibrillation.
the electrical safety rules in hospital? ________
a. Because there are sick peoples inside.
b. Because the skin breakage make it
possible the entrance of electric current
inside the body.
c. Because the medical equipment are too
sophisticated.
d. Because of the high voltage applied for
some treatments.