1.8
1.8
1 - 9
1 - 9
1.8
1.8 Connection
Connection of
of Power
Power Cord
Cord and
and Grounding
Grounding Wire
Wire
WARNING
WARNING
Contact with the power supply voltage (100 V) may cause
Contact with the power supply voltage (100 V) may cause
an electric shock, resulting in fatal or serious injury.
an electric shock, resulting in fatal or serious injury.
Make sure the power switch is OFF, and connect the
Make sure the power switch is OFF, and connect the
power cord of the
power cord of the spectrophotome
spectrophotometer main unit
ter main unit after all
after all
other connections.
other connections.
(1)
(1) Plug
Plug the po
the power c
wer cord se
ord securely
curely into
into the con
the connector
nector of the
of the main
main
unit.
unit.
(2)
(2) When
When using
using a pl
a plug ad
ug adapter
apter or tabl
or table tap,
e tap, securely
securely connect
connect
its grounding wire to the
its grounding wire to the grounding terminal.
grounding terminal.
Fig.
Fig. 1-5
1-5 Grounding
Grounding Connection
Connection
GROUND
GROUND
Power outlet
Power outlet
Grounding
Grounding
terminal
terminal
Grounding resistance:
Grounding resistance:
100
100
Ω
Ω
or less
or less
Spectrophotometer
Spectrophotometer
Grounding wire
Grounding wire
(green)
(green)
Underground
Underground
75 cm or more
75 cm or more
underground
underground
Copper plate
Copper plate
10 mm
10 mm
2 mm
2 mm
3
3
0
0
0
0
m
m
m
m
Power cord
Power cord
COMMON
COMMON
W
W
HOT
HOT
S
S
COMMON
COMMON
(WHITE)
(WHITE)
GROUND
GROUND
(GREEN)
(GREEN)
HOT
HOT
(BLACK)
(BLACK)
COMMON
COMMON
HOT
HOT
S
S
GROUND
GROUND