Instructions For Ul And Cul; Wiring Of The Power Supply And Motor - Mitsubishi Electric FR-A800 Installation Manuallines

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
FR-A820/A840/A842 inverters
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.)
FR-A846 inverters (IP55 compatible model)
These types of inverter have been approved as products for a UL type12 enclosure that is suitable for Installation in a
Compartment Handling Conditioned Air (Plenum).
Install the inverter so that the inverter surrounding air temperature, humidity and atmosphere satisfy the specifications.
(Refer to page 2.)
The drive must be installed in clean air according to enclosure classification.
Cooling air must be clean, free from corrosive materials and electrically conductive dust regarding the UL Type 12 enclo-
sure.
This enclosure provides protection from airborne dust and light sprays or splashing water from all directions.
Wiring protection
For installation in the United States, Class T, Class J, or Class CC fuse or UL 489 Molded Case Circuit Breaker (MCCB)
must be provided in accordance with the National Electrical Code and any applicable provincial codes (refer to the tables
on page 58).
For installation in Canada, Class T, Class J, or Class CC fuse or UL 489 Molded Case Circuit Breaker (MCCB) must be
provided in accordance with the Canada Electrical Code and any applicable provincial codes (refer to the tables on page
58).
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, 264V maximum.
400V class
Suitable for use in a circuit capable of delivering not more than 100kA rms symmetrical amperes, 550V or 600V
maximum.
WARNING
APPENDIX
59