Mitsubishi Electric FR-E700 Installation Manuallines page 25

A.2 Instructions for UL and cUL
(UL 508C, CSA C22.2 No.14)
A.2.1 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.
A.2.2 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 an enclosure so that the inverter ambient temperature, humidity and atmosphere satisfy the specifications. (Refer to
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 Canada Electrical Code and
any applicable provincial codes.
Provide the appropriate UL and cUL listed class T type fuse that are suitable for branch circuit protection in accordance
with the table below.
FR-E740- -EC (C)
Rated voltage [V]
Without power factor
Fuse maximum
improving reactor
allowable
With power factor
rating [A] *
improving reactor
* Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
A.2.3 Short circuit ratings
400V class
Suitable For Use in A Circuit Capable of Delivering Not More Than 100kA rms Symmetrical Amperes, 528V Maximum.
A.2.4 Wiring
The cables used should be 75°C 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.
016 026 040
6 10 15
6 10 10
060 095 120
480V or more
20 30 40
15 25 35
APPENDIX
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page 2
170 230 300
70 80 90
60 70 90
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