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Conformity to the Low Voltage Directive in the EU
If installed according to the guidelines given below, inverters marked with CE or TÜV are considered
as compliant with the Low Voltage Directive 73/23/EEC.
1. The ground terminal G should always be connected to the ground. Do not use only a
residual-current-operated protective device (RCD)/a ground fault circuit interrupter (GFCI)*
as the sole method of electric shock protection. Be sure to use ground wires whose size is
greater than power supply lines.
*
With overcurrent protection.
2. When used with the inverter, a molded case circuit breaker (MCCB), residual-
current-operated protective device (RCD)/a ground fault circuit interrupter (GFCI) or
magnetic contactor (MC) should conform to the EN or IEC standards.
3. When you use a residual-current-operated protective device (RCD)/a ground fault circuit
interrupter (GFCI) for protection from electric shock in direct or indirect contact power lines
or nodes, be sure to install type B of RCD/GFCI on the input (primary) of the inverter if the
power supply is three-phase 230/460 V. For single-phase 230 V power supply, use type A.
When you use no RCD/GFCI, take any other protective measure that isolates the electric
equipment from other equipment on the same power supply line using double or reinforced
insulation or that isolates the power supply lines connected to the electric equipment using
an isolation transformer.
4. The inverter should be used in an environment that does not exceed Pollution Degree 2
requirements. If the environment conforms to Pollution Degree 3 or 4, install the inverter in
an enclosure of IP54 or higher.
5. Install the inverter, AC or DC reactor, input or output filter in an enclosure with minimum
degree of protection of IP2X (Top surface of enclosure shall be minimum IP4X when it can
be easily accessed), to prevent human body from touching directly to live parts of these
equipment.
6. To make an inverter with no integrated EMC filter conform to the EMC directive, it is
necessary to connect an external EMC filter to the inverter and install them properly so that
the entire equipment including the inverter conforms to the EMC directive.
7. Do not connect any copper wire directly to grounding terminals. Use crimp terminals with tin
or equivalent plating to connect them.
8. To connect the three-phase or single-phase 230 V class series of inverters to the power
supply in Overvoltage Category III or to connect the three-phase 460 V class series of
inverters to the power supply in Overvoltage Category II or III, a supplementary insulation is
required for the control circuitry.
9. When you use an inverter at an altitude of more than 6600ft (2000 m), you should apply
basic insulation for the control circuits of the inverter. The inverter cannot be used at
altitudes of more than 9800ft (3000 m).
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