Quin Q-drive - EMC Compliance; Figure 1: EMC Filtering

Issue 1.5 Q-Drive Installation Manual
Copyright © 1996 Quin Systems Ltd. Page 3
1.2 EMC Compliance
The Q-Drive amplifier has been tested to and complies with BSEN 50081-1 and BSEN
50081-2 for radiated emissions. The Q-Drive also complies with mains borne
interference tests when used with a suitable three phase filter and when both the Q-
Drive and the filter are securely mounted and earth bonded to a conductive panel. If the
auxiliary supply is used then this too must be filtered. Both filters must provide at least
55dB attenuation at 1MHz. The cable between the filters and the Q-Drive should
preferably be screened and be kept as short as possible. Figure 1. below shows a typical
arrangement between the filter and Q-Drive,
Figure 1. EMC filtering
3 ø M
C
B
E T R S
Drive
Contactor
2 ø M
C
B
1 ø line
filter
1 ø isolating
transformer
Q-Drive
R'
T
S'
R
S
E
E
E
U
V
W
3 ø line
filter
3 ø A
uto-
transformer