WEG CFW-11 User Manual - page 71
Installation and Connection
3
CFW-11 | 3-45
Keep the separation distance to the other cables according to the
Table 3.6 on page 3-27
indication refer
to
Item 3.2.3 Power Connections on page 3-19
, for more information.
Maximum motor cable length and conduced and radiated emission levels according to the
Table 3.14 on
page 3-46
.
If a lower conducted emission level category is wished, then an external RFI filter must be used at the inverter
input. For more information (RFI filter commercial reference, motor cable length and emission levels) refer
to the
Table 3.14 on page 3-46
.
2. Shielded control cables, keeping the separation distance to other cables according to the
Item 3.2.5 Control
Connections on page 3-29
.
3. Inverter grounding according to the
Item 3.2.4 Grounding Connections on page 3-28
.
3.4.2 Standard Definitions
IEC/EN 61800-3: "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.
Example: houses, apartments, commercial installations, or offices located in residential buildings.
Second Environment: includes all establishments other than those directly connected to a low-voltage power
supply network which supplies buildings used for domestic purposes.
Example: industrial area, technical area of any building supplied by a dedicated transformer.
- 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.
Note: a professional is a person or organization familiar with the installation and/or commissioning of inverters,
including the EMC aspects.
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 to
or greater than 400 Amps, or intended for use in complex systems in the Second Environment.
EN 55011: "Threshold values and measuring methods for radio interference from industrial, scientific
and medical (ISM) high-frequency equipment"