Circutor AFQm IP54, Instruction Manual

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111
Instruction Manual
AFQm IP54
ENGLISH
3.8.- PARALLEL CONNECTION OF 2 TO 100 ACTIVE FILTERS
The
AFQm IP54
devices can be arranged in parallel to increase the available filtering power.
Expandable by up to 100 parallel devices of the
70A
and
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 17: Connection of 2 to 100 filters in parallel (Transformers on the mains side).
Master
1
2 100
...
Figure 18: 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.
Note: The 200A ( AFQm-xxx-200C ), 300A ( AFQm-xxx-300C ) and 400A ( AFQm-xxx-400C ) cabinets
are made up of 2, 3 and 4 100A devices in parallel. The 140A ( AFQm-xxx-140C ), 210A ( AFQm-xxx-210C )