Mitsubishi Electric FR-F840-00023 Installation Manuallines page 61

A.2 Instructions for UL and cUL
(Conforming standard UL 508C, CSA C22.2 No.14)
A.2.1 General precautions
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
These 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 surrounding air temperature, humidity and atmosphere satisfy the specifications.
(Refer to page 2.)
Wiring protection (FR-F820/F840 inverters)
For installation in the United States, Class T, Class J, Class CC, or Class L fuse, UL 489 Molded Case Circuit Breaker
(MCCB), or Type E combination motor controller must be provided in accordance with the National Electrical Code and
any applicable provincial codes (refer to the tables on page 54 and below).
For installation in Canada, Class T, Class J, Class CC, or Class L fuse, or UL 489 Molded Case Circuit Breaker (MCCB), or
Type E combination motor controller must be provided in accordance with the Canada Electrical Code and any applicable
provincial codes (refer to the tables on page 54 and below).
For the FR-F820 series, Class T, Class J, or Class CC fuse, UL 489 Molded Case Circuit Breaker (MCCB), or Type E com-
bination motor controller must be provided (refer to the tables on page 54 and below).
FR-F820-
Type E combination motor
*1
controller
FR-F840-
Type E combination motor
*1
controller
*1
For UL/cUL certification, use the following product:
Model
MMP-T32
*2
Suitable for use in a circuit capable of delivering not more than 50 or 25 kA rms symmetrical amperes, 480Y/277 volts maximum when
protected by the type E combination motor controllers indicated in the above table.
Wiring protection (FR-F842 inverters)
For wiring protection of the converter unit (FR-CC2) refer to the FR-CC2 Instruction Manual.
A.2.3 Wiring of the power supply and motor
For wiring the input (R/L1, S/L2, T/L3) and output (U, V, W) terminals of the inverter, use the UL-listed copper wires (rated
at 75°C) and round crimping terminals. Crimp the crimping terminals with the crimping tool recommended by the terminal
maker.
A.2.4 Short circuit ratings
200V class
Suitable for use in a circuit capable of delivering not more than 100kA rms symmetrical amperes, 240V maximum.
400V class
Suitable for use in a circuit capable of delivering not more than 100kA rms symmetrical amperes, 500V maximum.
WARNING
Maximum current rating [A]
*2
Maximum SCCR [kA]
Maximum current rating [A]
*2
Maximum SCCR [kA]
Manufacturer
Mitsubishi Electric Corp.
00046 00077 00105 00167
(0.75K) (1.5K) (2.2K) (3.7K)
8 13 18
50 50 50
00023 00038 00052 00083
(0.75K) (1.5K) (2.2K) (3.7K)
4 6.3 8
50 50 50
Rated voltage, V AC
480Y/277
APPENDIX
00340
00250 (7.5K)
(5.5K) or
higher
25 32 —
25 25 —
00126 00170 00250
(5.5K) (7.5K) (11K)
13 18 25 32
50 50 25 25
00310
(15K)
or
higher
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