Circutor AFQm, Instruction Manual, Page: 149 / 230

149
Instruction Manual
AFQm
ENGLISH
3.8.- PARALLEL CONNECTION OF 2 TO 100 ACTIVE FILTERS
The
AFQm
devices can be arranged in parallel to increase the available filtering power.
Up to 100 devices can be arranged in parallel, either of the
30A, 60A, 70A
or
100A
models.
In the case of installations with devices in parallel, a device must be defined as the “
master
”, while all
others will have “
slave
” devices functions.
The “
master
” will be responsible for measuring the network parameters, so only the current transform-
ers will be connected to it. This allows low-power transformers to be used in these installations, since
an individual transformer does not have to be connected to each device.
Master
1
2 100
...
Figure 28: Connection of 2 to 100 filters in parallel (Transformers on the mains side).
Master
1
2 100
...
Figure 29: Connection of 2 to 100 filters in parallel (Transformers on the load side).
New device can be connected to existing devices without having to shut down or disconnect them. This
ensures filtering capacity can be increased or degraded device in critical installations can be replaced
without affecting the installation, allowing connection without shutting down the device and also mak-
ing it possible to achieve 0 MTD (Maximum Tolerable Downtime).
In the event of failure of the “ master ” device, the front connection of the current transformers allows
connection to be changed to a “ slave ” device, reconfigured as the “ master ”, meaning the system re-
sumes operation quickly with minimum downtime.