Compliance
C-8
AC30V series Variable Speed Drive
Radiated Emissions Profile
EN61800-3 - Limits for electromagnetic radiation disturbance in the frequency band 30 MHz to 1000 MHz
Frequency band
MHz
Category C1
Category C2
Electric field strength component
Quasi-peak dB(
V/m)
Electric field strength component
Quasi-peak dB(
V/m)
30
f
230
30
40
230
f
1 000
37
47
NOTE: Measurement distance 10 m.
For category C1, if the field strength measurement at 10 m cannot be made because of high ambient noise levels or for other reasons, measurement may be
made at 3 m. If the 3 m distance is used, the measurement result obtained shall be normalised to 10 m by subtracting 10 dB from the result. In this case, care
should be taken to avoid near field effects, particularly when the PDS (Power Drive System) is not of an appropriately small size, and at frequencies near 30
MHz.
When multiple drives are used 3dB attenuation per drive needs to be added.
