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Technical Description
Three Phase Universal Motors
72/140 Dual Stage Rotary Vane Pumps User Manual/ 87-900-937-01(L)
Electrical Connections of Three-Phase World Wide
Motors
To connect the motor to the three-phase mains, follow the wiring
diagram on the motor plate or on the inside of the terminal strip.
Install a multipolar switch on the power line, with contact spacing of
at least 3 mm. A magneto-thermal switch must be installed
downstream of this switch, tripping at 130-140 % of the nominal
current.
Tab. 7
CONNECTION FREQ.
[HZ]
NOMINAL
VOLTAGES [V]
POWER
[KW]
START UP
CURRENT [A]
CURRENT
[A]
MAX FUSE
RATING [A]
STAR 50 380 to 415 0.75 15 2.6 4
STAR 60 460 0.90 14 2.4 4
DELTA 50 200 to 240 0.75 26 4.4 6
DELTA 60 200 to 230 0.90 21 4.8 6
CAUTION!
It is recommended to connect the pump to the power supply through a dedicated
switch on the main electrical panel of the installation, or in proximity of the
power supply connection point.
Before starting the pump, give a short activation to the power switch,
in order to check that the motor turns in the direction indicated by
the arrow on the motor body. Should it rotate in the opposite
direction, invert the connection of any two phases on the motor
terminals.
One of the most effective method to verify the rotational way of the
motor, it is to start the pump with a sheet of paper on the pump inlet.
If the paper is sucked by the pump then the motor runs in the right
way.
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