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⑥ Connect the ground to the "
⑦ Connect the utility power supply to the "INPUT L and N" input terminals.
⑧ Connect the customer's load devices to the "OUPUT L and N" output terminals.*
*Note
A breaker for a branch circuit protection of output is needed between the UPS and the customer's load.
The breaker should be compliant with UL489 and proper for the customer's load and wiring.
The breaker capacity should be 35A.
See the table below, and connect wires of the specified sizes.
Terminal Type
Label
Input terminals
INPUT L,N
Ground terminal
Output terminals
OUTPUT L,N
L
N
⑦
⑥
Connect the
Connect
utility power
the
supply
ground
Notes on wiring terminal block
Terminal Connection Procedure
1. Strip about 16mm(0.63in.) of insulation each wire. Insert the wire into the terminals.
2. Tighten the screw hole in the upper of the terminal block with the specified tightening torque
(3 N･m) by using a flat-bladed screwdriver.
When disconnecting wires, disconnect the ground last.
Be careful with regards to the polarity of the input power when performing wiring work.
Make sure you connect the ground phase to the N terminal.
⑨ When you have finished the wiring, check that the connections are not loose.
⑩ Attach the upper cover of terminal block cover with four screws removed in step 3.
Unsuitable load devices
Do not connect the following types of load device to the UPS.
Load Devices
Laser printers, plain paper fax
machines, copy machines, overhead
projectors, vacuum cleaners, dryers,
etc.
Medical instruments, control devices
for elevators, computer systems
upon which public infrastructure
depends
" terminal of the terminal block. Use D class grounding for the ground.
Wire Size
Torque
mm
2
3 N･m
8
3 N･m
5.5
3 N･m
8
L
N
⑧
Connect the
INPUT wires
load device
Ground wire
Since such devices are subject to high transient current
surges, the UPS will detect current surges and the battery
backup operation will become no longer possible when a
power outage occurs. There is also the danger of the UPS
malfunctioning.
Special considerations need to be given to operation,
maintenance, and management, such as system
redundancy and the installation of emergency power
generation facilities.
AWG
8
10
⑩ Attach the upper cover of
8
terminal block cover using
four screws removed in
step 3.
OUTPUT wires
Reason
Installation and Wiring
Tighten the screw
hole from upper side
to connect the wires
using a flat-bladed
screwdriver.
20
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