5
M731400M00
Symbols and Terms in The Manual
Symbols :
: Caution, Risk of Danger.
Warning :
Identifies hazardous conditions and actions
that could cause
BODILY HARM
or
DEATH
Caution :
Identifies conditions and actions that could
DAMAGE
the meter or equipment under test.
:
Fuse.
Terms :
CAT
Level
:
Over Voltage Category Level, indicates measure-
ment can be performed at which measuring circuit level. The
different level measuring circuit has different high transient
stresses voltage.
PER IEC 1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY
Ⅰ
Equipment of
OVERVOLTAGE CATEGORY
Ⅰ
is equipment
for connection to circuits in which measurements are taken to
limit the transient overvoltage to an appropriate low level.
Note
examples include protected electronic circuits.
OVERVOLTAGE CATEGORY
Ⅱ
Equipment of
OVERVOLTAGE CATEGORY
Ⅱ
is energy
consuming equipment to be supplied from this fixed installation.
OVERVOLTAGE CATEGORY
Ⅲ
Equipment of
OVERVOLTAGE CATEGORY
Ⅲ
is equipment
in fixed installations. Note examples include switches in this
fixed installation and some equipment for industrial use with
permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY
Ⅳ
Equipment of
OVERVOLTAGE CATRGORY
Ⅳ
is for use at
the origin of the installations. Note examples include electricity
meters and primary over-current protection equipment.
