INSTALLATION AND WIRING
44
2.3.6 Instructions for compliance with U.S. and Canadian Electrical
Codes
(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 or less.
Inverter Type
Cabinet
(enclosure)
Size (Unit: mm)
Vent Hole Area Cooling Fan
FR-E520 -3.7KN
W H D
255
×
192
×
218
•
55% of both the side of
the Cabinet
•
Width of each slit:
3.2mm
•
To be provided on
each of the upper side
areas.
Installed at the enclosure top
to suck air from inside the
enclosure to the outside.
(Fan air flow: 2
×
0.59m
3
/min
or more)
(2) Wiring of the power supply and motor
Use the UL-listed cables (rated at 75
°
C) and round crimping terminals to wire the input
(R, S, T) <L
1
, L
2
, L
3
> and output (U, V, W) terminals of the inverter. Crimp the terminals
with the crimping tool recommended by the terminal manufacturer.
(3) Fuse
The fuse used on the input side should be any of the UL Class K5 fuses having the
ratings as listed below:
Applicable Inverter Type Rated Voltage (V) Rated Current (A)
FR-E520-0.1KN 4
FR-E520-0.2KN 6
FR-E520-0.4KN 12
FR-E520-0.75KN 20
FR-E520-1.5KN 35
FR-E520-2.2KN 45
FR-E520-3.7KN 70
FR-E520-5.5KN 90
FR-E520-7.5KN
250
125
(4) Short circuit ratings
Suitable For Use In A Circuit Capable Of Delivering Not More Than 5 kA rms
Symmetrical Amperes.
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