English
INSTALLATION AND CONNECTION
3.3 INSTALLATION
ACCORDING
TO
THE
EUROPEAN
DIRECTIVE
OF
ELECTROMAGNETIC COMPATIBILITY
Inverters with suffix C3 have an internal RFI filter to reduce electromagnetic interference. These inverters, when
installed in accordance with the instructions contained in this manual, meet the requirements of the electromagnetic
compatibility directive “EMC Directive 2004/108/EC”.
The CFW900 inverter series has been designed only for industrial applications. Therefore, the emission limits of
harmonic currents defined by the standards EN 61000-3-2 and EN 61000-3-2/A 14.
!
WARNING!
For the CFW900 line operating in IT networks (ungrounded neutral or grounding by a high ohmic
value resistor) or delta corner earthed networks, it is necessary to disconnect the grounding screws,
as explained in
for internal damage to the inverter will occur. In these cases, the inverter
falls into category C4 according to IEC/EN 61800-3.
3.3.1 Standard Definitions
Definitions of IEC/EN 61800-3 Standard: ”Adjustable Speed Electrical Power Drives Systems”
Environment:
First Environment
: includes domestic premises. It also includes establishments directly connected without
intermediate transformer to a low-voltage power supply network which supplies buildings used for domestic
purposes.
Second Environment
: includes all establishments other than those directly connected to a low-voltage power
supply which supplies buildings used for domestic purposes.
Categories:
Category C1:
inverters with a voltage rating less than 1000 V and intended for use in the First Environment.
Category C2:
inverters with a voltage rating less than 1000 V, intended for use in the First Environment, not provided
with a plug connector or a movable installations, and installed and commissioned by a professional.
Category C3:
inverters with a voltage rating less than 1000 V and intended for use in the Second Environment
only (not designed for use in the First Environment).
Category C4:
inverters with a voltage rating equal to or greater than 1000 V, or with a current rating equal toor
greater than 400 Amps, or intended for use in complex systems in the Second Environment.
Definitions of EN 55011 Standard: ”Threshold values and measuring methods for radio interference from
industrial, scientific and medical (ISM) high-frequency equipment”
Class B:
equipment intended for use in the low voltage power supply (condominiums, commerce and light industry).
Class A1:
equipment intended for use in the low voltage power supply. Restricted distribution.
Note: it must be installed and commissioned by a professional when applied in low voltage power supply.
Class A2:
equipment intended for use in industrial environments.
✓
NOTE!
A professional is a person or organization familiar with the installation and/or commissioning of
inverters, including their EMC aspects.
CFW900 | 45
Summary of Contents for CFW900
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