Hioki 3169-20 - Usage Notes and Handling Guidelines

Power Measurement
11
1
2
3
4
5
6
7
8
9
10
11
4. Connect the Voltage cord to the voltage input terminals of
the 3169.
• Connect the voltage cords to the instrument first, and then
to the active lines to be measured.
Observe the following to avoid electric shock and short cir-
cuits.
• Voltage cord should only be connected to the secondary
side of a
breaker, so the breaker can prevent an accident if
a short circuit occurs. Connections should never be made
to the primary side of a breaker, because unrestricted cur-
rent flow could cause a serious accident if a short circuit
occu
rs.
• Do not allow the voltage cord clips to touch two wires at the
same t
ime.
Never touch the edge of the metal clips.
• Voltage input terminals U
1
, U
2
, and U
3
are common to the N
terminal and are not insulated. To avoid the risk of electric
shock, do not touch the terminals.
• To prevent an electric shock accident, confirm that the
w
hite or red portion (insulation layer) inside the cable of
voltage cord is not exposed. If a color inside the cable is
exposed, do not use the cable.
For safety reasons, when taking measurements, only use the
L9438-53 Voltage Cord provided with the instrument.
Insert plugs all the way in.
Voltage input terminals
NU
1
U
2
Black Red Yellow