EMC
MD380 User Manual
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Chapter 7 EMC
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1) EMC
Electromagnetic compatibility (EMC) describes the ability of electronic and electrical
devices or systems to work properly in the electromagnetic environment and not to
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In other words, EMC includes two aspects: The electromagnetic interference generated
by a device or system must be restricted within a certain limit; the device or system
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2) First environment
Environment that includes domestic premises, it also includes establishments directly
connected without intermediate transformers to a low-voltage power supply network
which supplies buildings used for domestic purposes
3) Second environment
Environment that includes all establishments other than those directly connected to a
low-voltage power supply network which supplies buildings used for domestic purposes
4) Category C1 AC drive
Power Drive System (PDS) of rated voltage less than 1 000 V, intended for use in the
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5) Category C2 AC drive
PDS of rated voltage less than 1 000 V, which is neither a plug in device nor a movable
device and, when used in the first environment, is intended to be installed and
commissioned only by a professional
6) Category C3 AC drive
PDS of rated voltage less than 1 000 V, intended for use in the second environment
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7) Category C4 AC drive
PDS of rated voltage equal to or above 1 000 V, or rated current equal to or above 400
A, or intended for use in complex systems in the second environment
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