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The illustrations corresponding to models in cabinet are shown with direct connection over the
maneuvering mechanism as a mere example. Models with no terminals, the connection order
will not differ from the one stated unless the labelling of the equipment states it
Connect the power supply cables to input terminals (P) and (N) in single phase equipment’s or
(R), (Y), (B) and (N) in three phase equipment’s
In three phase stabilizers consisting of three single phase cabinets, in case it was requested to
have one single point to connect the neutral, joint the neutral rod of the three equipment’s by
means of the two extensions copper rods. Otherwise connect the suitable cross cable section
to the three terminals corresponding to the neutral of each equipment. When it is not a
conditioning (only one conductor), it is able to connect a suitable cross cable s ection to the
input neutral terminal of each equipment.
In case of discrepancies between the labelling and the instructions of this manual, the labelling
will always prevail.
5.2.8 Connection of output terminals
As this is an equipment with class I protection against electrical shocks, it is essential to
install the protection earth conductor (connect earth
). Connect this conductor, before supplying
voltage to the input terminals.
Depending on the model of stabilizer, the load or loads connections are directly done to the
terminals or to the own rods of the manual switch option, if it is included.
The illustrations corresponding to models in cabinet, are shown with direct connection over the
manual bypass maneuvering mechanism as a mere example. For those models without this option,
there will always be a terminal strip. Models with no terminals, the connection order will not differ
from the one stated unless the labelling of the equipment states it.
Connect the cables to supply the loads or loads to the output terminals and in single phase
equipment’s or (R), (Y), (B) and (N) in three phase equipment’s, Pay attention to the neutral
connection in a three phase unit with star configuration, because if the line is connected instead of
the neutral, the load will suffer a high over voltage that can destroy it. In three phase equipment’s
with delta output, the neutral terminal (N) is not available.
In three phase stabilizers consisting of three single phase cabinets, in case it was requested to have
one single point to connect the neutral, joint the neutral rod of the three equipment’s by means of
the two extensions copper rods, otherwise connect the suitable cross cable section to the three
terminals corresponding to the neutral of each equipment. When it is not a conditioning (only one
conductor), it is able to connect a suitable cross cable section to the output neutral terminal (N) of
each equipment.
In case of discrepancies between the labelling and the instructions of this manual, the labelling
will always prevail.
With respect to the protection that must be placed at the output of the stabilizer, we recommend
that the output power should be distributed in four lines, at least. Each one of them should have a
circuit breaker protection switch of a quarter of the nominal power. This type of output power
distribution will allow, in the event of a breakdown in any of the machines connected to the
equipment that causes a short-circuit, will only affect to the line that is faulty. The rest of the
connected loads will have their continuity assured due to the tripping of the protection of the line
