2
.Installation and connection
17
2-4 Connecting the AC input
When installation and connection are complete, connect the unit’s AC input to a commercial power
source.
This product is designed to be connected to a commercial power with
transient overvoltages of 2500 Vpeak or less.
●
When the transient overvoltages of commercial power exceed 2500 Vpeak, additional surge
protection devices shall be provided external to the equipment to limit the transient overvoltages
less than 2500 Vpeak.
Make sure to connect the AC input of the unit into a commercial power
with rated input voltage (200/208/220/230/240VAC).
●
Connecting to a commercial power of a different rated voltage may result in fire.
●
The unit may fail.
Caution
Caution
(for installation and connection)
2-4-1. Connecting to the input terminal block
When connecting the AC input directly from a power switchboard, make
sure that the wiring work is performed by a qualified electrical engineer
(with Type II certification or higher).
●
To use the BU1002RW with up to 1000VA/800W, a wiring capacity of 7A or required.
Make sure to properly match the AC input terminal. Turn off the external
breaker when performing work on the unit's AC input terminals. Be sure
to attach the terminal block cover.
●
Failure to do so may result in electric shock or ground fault.
Include a breaker (double pole) between the unit and the commercial
power, and install the breaker where it is easy to operate.
Connection procedure
(1) Remove the terminal block cover.
(2) Run the wires through the terminal block cover (with cable clamp).
(3) Connect the L1 line to L1. Connect the L2 line to L2, and connect the ground wire to
.
Connections to the terminal block shall comply with the standards in Table 1.
(4) Fix the terminal block cover with the screws, and then turn the clamp to stabilize the wires.
Table 1
Connectable wire type
Flexible cord
Cord diameter
8.8 to 11 mm
Connectable wire size
2 to 4 mm
2
(AWG14 to AWG12)
Recommended cable size
2 mm
2
(AWG14)
L1, L2
Amount of stripped wire
6 to 8 mm
Tightening torque
0.8 N•m (7 lb-in)
, FG
Tightening torque
1.5 N•m (13 lb-in)
Summary of Contents for BU1002RW
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