WARNING!
Do not install a drive equipped with the Cat 2 EMC filtering on IT (ungrounded)
systems. The supply network becomes connected to ground potential through the
EMC filter capacitors which may cause danger or damage the unit.
￭ Category C3
The drive complies with the C3 category with these provisions:
1. The supply unit is C3-compliant:
• Cabinet-installed multidrive: Supply unit is equipped with the filter option +E210.
• Multidrive modules: Supply modules have the C3-compliant filtering installed as
standard.
2. The motor and control cables are selected, and routed according to the electrical planning
guidelines of the drive. The EMC recommendations are obeyed.
3. The drive is installed according to its installation instructions. The EMC recommendations
are obeyed.
4. Motor cable length (for any inverter unit) does not exceed 100 meters (328 ft).
WARNING!
A drive of category C3 is not intended to be used on a low-voltage public network
which supplies domestic premises. Radio frequency interference is expected if
the drive is used on such a network.
￭ Category C4
The drive complies with the C4 category with these provisions:
1. It is ensured that no excessive emission is propagated to neighboring low-voltage
networks. In some cases, the natural suppression in transformers and cables is sufficient.
If in doubt, the supply transformer with static screening between the primary and
secondary windings can be used.
Medium voltage network1
Neighboring network2
Point of measurement3
Low voltage4
Standards and markings 45
To Next Page
Loading...
