Introduction
12
elite
TM
1.2.6
Earth
(Ground)
Symbol
Definition:
Earth
(ground)
The
“earth
(ground)”
symbol
(reference
IEC
Publication
417,
Symbol
No.
5017)
is
used
to
identify
equipment
earth
(ground)
terminal(s)
in
cases
where
the
“noiseless
(clean)
earth
(ground)”
symbol
(reference
IEC
Publication
417,
Symbol
No.
5018)
and
the
“protective
earth
(ground)”
symbol
(reference
IEC
Publication
417,
Symbol
No.
5019)
are
not
explicitly
required.
1.2.7
Protective
Earth
(Ground)
Symbol
Definition:
Protective
earth
(ground)
The
“protective
earth
(ground)”
symbol
(reference
IEC
Publication
417,
Symbol
No.
5019)
is
used
to
identify
equipment
terminal(s)
which
are
intended
for
connection
to
an
external
protective
conductor
for
protection
against
electric
shock
in
case
of
a
fault
or
to
identify
the
terminal
of
a
protective
earth
(ground)
electrode.
1.2.8
Frame
or
Chassis
Symbol
Definition:
Frame
or
chassis
The
“frame
or
chassis”
symbol
(reference
IEC
Publication
417,
Symbol
No.
5020)
is
used
to
identify
equipment
frame
or
chassis
terminal(s).
