Conformity to the Low Voltage Directive in the EU (Continued)
*1 Use this inverter at the following IT system.
Non-earthed (isolated from earth) IT
system
IT system which earthed neutral
by an impedance
Can be used.
In this case the insulation between the control
interface and the main circuit of the inverter is
basic insulation.
Thus do not connect SELV circuit from external
controller directly (make connection using a
supplementary insulation.).
Use an earth fault detector able to disconnect
the power within 5s after the earth fault occurs.
Corner earthed / Phase-earthed IT
system by an impedance
Can not be used
*2 Cannot apply to Corner earthed / Phase-earthed TT system of 400V type.
11.5 Compliance with UL Standards and Canadian Standards (cUL certification)
11.5.1 General
Originally, the UL standards were established by Underwriters Laboratories, Inc. as private criteria
for inspections/investigations pertaining to fire/accident insurance in the USA. Later, these standards
were authorized as the official standards to protect operators, service personnel and the general
populace from fires and other accidents in the USA.
cUL certification means that UL has given certification for products to clear CSA Standards. cUL
certified products are equivalent to those compliant with CSA Standards.
11.5.2 Considerations when using FRENIC-Mini in systems to be certified by UL and cUL
To use the FRENIC-Mini series of inverters as a part of UL Standards or CSA Standards (cUL certi-
fied) certified product, refer to the guidelines given below.
Conformity to UL standards and Canadian standards
cUL certification
If installed according to the guidelines given below, inverters marked with UL/cUL are considered as
compliant with the UL and CSA (cUL certified) standards.
Integral solid state short circuit protection does not provide branch circuit protection. Branch
circuit protection must be provided in accordance with the National Electrical Code and any
additional local codes.
1. Solid state motor overload protection (motor protection by electronic thermal overload relay)
is provided in each model.
Adjust function codes F10 to F12 and H89 to set the protection level.
2. Connect the power supply satisfying the characteristics shown in the table below as an input
power supply of the inverter. (Short circuit rating)
3. Use 75
Cu wire only.
4. Use Class 1 wire only for control circuits.
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