Comar Condensatori QSR6 Bedienungshandbuch Seite 34

The C.T. has to be connected to the line, upstream the load and the P.F.
Regulator: the C.T., can then measure the current demanded by the load,
inductive and capacitive. Possible capacitors for fixed P.F.Regulation will
be mounted downstream of the C.T., as they aren't used and dimensioned
for the P.F. Regulation of transformers that feed the load.
It's important to check that the phase, where the C.T. is connected, is the
same that will be connected to terminals of the main switch, inside the
equipment, signed with the letter "L1".
Before doing any work on the C.T. circuit, be sure that the C.T. is short-
circuited, otherwise dangerous voltages can rise, add bringing to breakdown
the C.T.
P.F. correcting two or more lines (transformers in parallel), you need to use
two or more C.T (.../5) of which the secondary circuits will be supplied a
add transformer with 5Amps at secondary: connect the current transformers
at the same phase.
If two or more C.T. 's are used with an additional transformer, the value of
the primary current is the sum of each C.T. Example: n°3 C.T. 's 500/5 =
n°1 C.T. 1500/5.
Connecting two or more cables (for load and P.F.Regulator) on the same
terminal - phase "L1" - from the general main switch, It needs to pass
through the hole of the C.T. all the derived cables.
Note. QSR regulators are able to detect automatically the current phasing
of the CT. It is not necessary to ensure correct polarity connections as with
other Power Factor Regulators.
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