2
.Installation and connection
19
Caution
(for installation and connection)
2-4-2. Connecting to the input terminal block (BU2002RWL/BU3002RWL/BU5002RWL)
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 BU2002RWL with up to 2000VA/1400W, a wiring capacity of 11A or required.
●
To use the BU3002RWL with up to 3000VA/2100W, a wiring capacity of 16A or required.
●
To use the BU5002RWL with up to 5000VA/3500W, a wiring capacity of 27A or required.
Make sure to properly match the AC input terminal with the appropriate
wire color. Turn off the external breaker when performing work on the
unit's AC input terminals. Be sure to attach the AC input 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-cover of the AC input terminal block.
(2) Run the wires through the terminal block cover (with cable clamp).
(3) Connect the ground wire to the G terminal. Use a flat head screwdriver to loosen the terminal
block screw, insert the wire, and then retighten the screw.
(4) Connect the neutral line to L2, and connect the line to L1.
Connections to the terminal block shall comply with the standards in Table 1.
(5) Fix the terminal block cover with the screws, and then turn the clamp to stabilize the wires.
Table 1
BU2002RWL
BU3002RWL
BU5002RWL
Connectable wire size
0.5 to 4mm
2
1.5 to 6mm
2
Amount of stripped wire
6 to 8mm
9 to 11mm
Tightening torque
0.49N•m
1.18N•m
Recommended cable size 2mm
2
(AWG14)
3.5mm
2
(AWG12)
Summary of Contents for BU2002RWL
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