
Appendix1 Terminology
A2
Equipment type (classification)
MEDICAL ELECTRI-
CAL EQUIPMENT
(ME EQUIPMENT)
electrical equipment having an APPLIED PART or transferring energy
to or from the PATIENT or detecting such energy transfer to or from the
PATIENT.
CLASS I
term referring to electrical equipment in which protection against elec-
tric shock does not rely on BASIC INSULATION only, but which
includes an additional safety precaution in that means are provided for
ACCESSIBLE PARTS of metal or internal parts of metal to be PRO-
TECTIVELY EARTHED.
CLASS II
term referring to electrical equipment in which protection against elec-
tric shock does not rely on BASIC INSULATION only, but in which addi-
tional safety precautions such as DOUBLE INSULATION or
REINFORCED INSULATION are provided, there being no provision for
protective earthing or reliance upon installation conditions.
NOTE:CLASS II equipment can be provided with a FUNCTIONAL
EARTH TERMINAL or a FUNCTIONAL EARTH CONDUCTOR.
INTERNALLY
POWERED equipment
term referring to electrical equipment that is able to operate from an
INTERNAL ELECTRICAL POWER SOURCE.
MOBILE equipment
term referring to TRANSPORTABLE equipment intended to be moved
from one location to another while supported by its own wheels or
equivalent means.
PERMANENTLY
INSTALLED
term meaning electrically connected to the SUPPLY MAINS by means
of a permanent connection that can only be detached by the use of a
TOOL.
Others
BASIC INSULATION
insulation providing basic protection against electric shock
NOTE:BASIC INSULATION provides one MEANS OF PROTECTION.
DOUBLE INSULATION
insulation comprising both BASIC INSULATION and SUPPLEMEN-
TARY INSULATION
NOTE:DOUBLE INSULATION provides two MEANS OF PROTEC-
TION.
REINFORCED
INSULATION
single insulation system that provides two MEANS OF PROTECTION.
SUPPLEMENTARY
INSULATION
independent insulation applied in addition to BASIC INSULATION in
order to provide protection against electric shock in the event of a fail-
ure of BASIC INSULATION
NOTE:SUPPLEMENTARY INSULATION provides one MEANS OF
PROTECTION.
PROTECTIVE EARTH
CONDUCTOR
conductor to be connected between the PROTECTIVE EARTH TERMI-
NAL and an external protective earthing system.
PROTECTIVE EARTH
TERMINAL
terminal connected to conductive parts of CLASS I equipment for safety
purposes. This terminal is intended to be connected to an external pro-
tective earthing system by a PROTECTIVE EARTH CONDUCTOR.
Summary of Contents for ST5540
Page 2: ......
Page 6: ...Contents iv Index i ...
Page 29: ...23 2 Chapter 2 Instrument Labels and Screens Instrument Labels and Screens Chapter 2 ...
Page 80: ...4 8 Changing the Measurement Method Auto Manual 74 ...
Page 121: ...115 8 9 7 Chapter 7 Instrument System Settings Instrument System Settings Chapter 7 ...
Page 144: ...7 14 Setting the Backlight 138 ...
Page 284: ...10 14 Measurement Networks 278 ...
Page 290: ...11 4 Instrument Disposal 284 ...
Page 320: ...Appendix4 External Dimensions A30 ...
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