Kruger Ecowatt K320 Series Operation Manual page 346

Ecowatt Drive K320 series
®
Note: The EMC standard IEC/EN 61800-3 no longer restricts the power distribution of VFDs, but
it specifies their use, installation, and commissioning. Specialized personnel or organizations
must have the necessary skills (including the EMC-related knowledge) for installing and/or
performing commissioning on the electrical drive systems.
C3: Rated voltage lower than 1000 V, applied to environments of Category II. They cannot be
applied to environments of Category I.
C4: Rated voltage higher than 1000 V, or rated current higher or equal to 400 A, applied to
complex systems in environments of Category II.
B.6.1 VFD category of C2
The induction disturbance limit meets the following stipulations:
1. Select an optional EMC filter according to "Optional peripheral accessories" and install it
following the description in the EMC filter manual.
2. Select the motor and control cables according to the description in the manual.
3. Install the VFD according to the description in the manual.
Currently in environments in China, the VFD may generate radio

interference, you need to take measures to reduce the interference.
B.6.2 VFD category of C3
The anti-interference performance of the VFD meets the requirements of environments
Category II in the IEC/EN 61800-3 standard.
The induction disturbance limit meets the following stipulations:
1. Select an optional EMC filter according to "Optional peripheral accessories" and install it
following the description in the EMC filter manual.
2. Select the motor and control cables according to the description in the manual.
3. Install the VFD according to the description in the manual.
VFDs of C3 category cannot be applied to civilian low-voltage common

grids. When applied to such grids, the VFDs may generate radio frequency
electromagnetic interference.
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Technical data