WEGeuro - Indústria Eléctrica, S.A. Português - English
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If the insulation resistance values are lower than the values of the table above check if
the winding is affected by dust and moisture problem. In this case the winding must be
cleaned from dust and shall be oven dried carefully at a temperature lower than
100ºC.
If these measures are not sufficient, expert help shall be requested.
The test voltage for space heaters, thermal protectors and other accessories is 500
VCC.
6.2 Ensure that the motor nameplate voltage is the same as the mains supply. The
connection diagrams supplied inside the motor terminal box shall always be respected
in function of available supply voltage and/or required speeds (2 speed motors).
See the most common connection diagrams at the end of this instruction manual.
6.3 All motors are supplied with clockwise rotation, viewed from shaft end, when the
alphabetical sequence of the terminal letters (U, V, W), corresponds with the time
sequence or the phases (L1, L2, L3). To change the rotation of direction of the motor it
is necessary to exchange 2 of the 3 supply cables.
Motors having unidirectional fan, have assembled an arrow label to indicate the
direction of rotation of the motor.
6.4 If motors are equipped with “Ex eb” terminal boxes, the bushing insulators must be
fitted with clamps or locking plates in such a way that the conductors cannot move out
from the location fixed during their tightening.
6.5 As standard, “Ex eb” terminal boxes are equipped with bushing insulators with locking
plate, maintaining the current fault rate level (I
cc
) characteristics.
The bushing insulators with locking plate must be aligned with terminal lug in a way
that allows the right connection of the cables, as represented in the following images:
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