Instruction manual

22
(Standard to comply with: UL 508C, CSA C22.2 No. 14)
1. General 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.
2. Installation
The below types of inverter have been approved as products for use in enclosure and approval tests were conducted under the
following conditions. Design the enclosure so that the ambient temperature, humidity and ambience of the inverter will satisfy the
above specifications.
Wiring protection
For installation in the United States, branch circuit protection must be provided in accordance with the National Electrical Code and
any applicable provincial codes.
For installation in Canada, branch circuit protection must be provided in accordance with the Canadian Electrical Code and any
applicable provincial codes.
Provide the appropriate UL and cUL listed Class T type fuse that is suitable for branch circuit protection in accordance with the table
below.
∗ Maximum allowable rating by US National Electrical Code.Exact size must be chosen for each installation.
3. Short circuit ratings
• 200V class
Suitable For Use in A Circuit Capable of Delivering Not More Than 100 kA rms Symmetrical Amperes, 264 V Maximum.
• 400V class
Suitable For Use in A Circuit Capable of Delivering Not More Than 100 kA rms Symmetrical Amperes, 528 V Maximum.
4. Wiring
⋅ The cables used should be 75°C (167°F) copper cables.
⋅ Tighten the terminal screws to the specified torques.
Undertightening can cause a short or misoperation.
Overtightening can cause the screws and unit to be damaged, resulting in a short or misoperation.
⋅ Use the UL approved round crimping terminals. Crimp the terminals with the crimping tool recommended by the terminal
manufacturer.
Appendix 2 Instructions for UL and cUL
FR-E720--NA (C) 008 015 030 050 080 110 175 240 330 470 600
Rated fuse voltage(V) 240V or more
Fuse Maximum
allowable rating
(A)∗
Without power factor
improving reactor
15 15 15 20 30 40 60 70 80 150 175
With power factor
improving reactor
15 15 15 20 20 30 50 60 70 125 150
FR-E740--NA (C) 016 026 040 60 095 120 170 230 300
Rated fuse voltage(V) 480V or more
Fuse Maximum
allowable rating
(A)∗
Without power factor
improving reactor
6 1015203040708090
With power factor
improving reactor
6 1010152535607090
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