Appendix 3 Instructions for UL and cUL compliance
(Conforming standard UL 508C, CSA C22.2 No.14)
(1) Installation
This inverter is a UL / cUL Listed, enclosed type device with a suitably rated enclosure.
Design an enclosure so that the inverter surrounding air temperature, humidity and atmosphere satisfy the
specifications.
(Refer to page 152.)
Precaution
The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power OFF, wait for more
than 10 minutes, and check for residual voltage between terminal P/+ and N/- with a meter etc., to avoid a hazard of
electrical shock.
Wiring protection
For installation in the United States, Class RK5, Class J, Class CC, Class L, Class T or any faster acting fuses or UL
489 Molded Case Circuit Breaker (MCCB) must be provided, in accordance with the National Electrical Code and any
applicable local codes.
For installation in Canada, Class RK5, Class J, Class CC, Class L, Class T or any faster acting fuses or UL 489 Molded
Case Circuit Breaker (MCCB) must be provided, in accordance with the Canada Electrical Code and any applicable
provincial codes.
FR-F720P-
K
Rated fuse voltage(V)
Fuse
Without power factor
improving reactor
maximum
allowable
With power factor
improving reactor
rating (A)*
Molded case circuit breaker
(MCCB)
Maximum allowable rating (A)*
FR-F720P-
K
Rated fuse voltage(V)
Fuse
Without power factor
improving reactor
maximum
allowable
With power factor
improving reactor
rating (A)*
Molded case circuit breaker
(MCCB)
Maximum allowable rating (A)*
FR-F740P-
K
Rated fuse voltage(V)
Fuse
Without power factor
improving reactor
maximum
allowable
With power factor
improving reactor
rating (A)*
Molded case circuit breaker
(MCCB)
Maximum allowable rating (A)*
FR-F740P-
K
Rated fuse voltage(V)
Fuse
Without power factor
improving reactor
maximum
allowable
With power factor
improving reactor
rating (A)*
Molded case circuit breaker
(MCCB)
Maximum allowable rating (A)*
* Maximum allowable rating by US National Electrical Code.
Exact size must be chosen for each installation.
0.75
1.5
2.2
3.7
15
20
30
40
15
20
20
30
15
15
20
35
75
90
110
240V or more
⎯
⎯
⎯
500
600
700
700
800
1000
0.75
1.5
2.2
3.7
6
10
15
20
6
10
10
15
15
15
15
15
75
90
110
132
⎯
⎯
⎯
⎯
250
300
350
400
350
450
500
650
5.5
7.5
11
15
240V or more
60
80
150
175
50
70
125
150
50
70
100
125
5.5
7.5
11
15
480V or more
30
40
70
80
25
35
60
70
25
40
50
70
160
185
220
250
500V or more
⎯
⎯
⎯
⎯
500
600
700
800
800
800
1000 1200 1200 1200 1600 1600 2000 2000 2500
18.5
22
30
37
200
225
300
350
200
200
250
300
175
200
250
350
18.5
22
30
37
90
110
150
175
90
100
125
150
80
100
125
175
280
315
355
400
⎯
⎯
⎯
⎯
900
1000 1100 1200 1350 1500 1800
45
55
400
500
350
400
400
500
45
55
200
250
175
200
200
250
450
500
560
⎯
⎯
⎯
169