INSTALLATION AND WIRING
45
2.3.6 Instructions for compliance with U.S and Canadian Electrical
Codes
(Standard to comply with: UL 508C)
(
1
)
Installation
The above types of inverter have been approved as products for use in enclosure and
approval tests were conducted under the following conditions. For enclosure design,
refer to these conditions so that the ambient temperature of the inverter is 50
°
C
(122
°
F) or less.
"
""
"
200V class, 100V class
Inverter
Type
Cabinet
enclosure
Size (Unit: mm
(inches))
Vent Hole Area Cooling Fan
FR-E520 -
3.7K-NA
W H D
255
×
192
×
218
(10.04
×
7.56
×
8.58)
•
55% of both the side of
the Cabinet
•
Width of each slit:
3.2mm (0.12 inches)
•
To be provided on each
of the u
er side areas.
Installed at the enclosure to
to suck air from inside the
enclosure to the outside.
Fan air flow: 2
×
0.59m
/min
or more)
"
""
"
400V class
Design the enclosure so that the ambient temperature, humidity and ambience of the
inverter will satisfy the above specifications. (Refer to page 195)
(2) Branch
circuit protection
For installation in United States, branch circuit protection must be provided, in
accordance with the National Electrical Code and any applicable local codes.
For installation in Canada, branch circuit protection must be provided in accordance
with the Canada Electrical Code and any applicable provincial codes.
(3) Short circuit ratings
Suitable For Use In A Circuit Capable of Delivering Not More Than 5kA rms
Symmetrical Amperes.
(
4
)
Wiring of the power supply and motor
Use the UL-listed cables (rated at 75
°
C (167
°
F)) and round crimping terminals to wire
the input (R (L
1
), S (L
2
), T (L
3
)) and output (U, V, W) terminals of the inverter. Crimp the
terminals with the crimping tool recommended by the terminal manufacturer.
2
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