Vogt N Series, Руководство по обслуживанию, Страница: 19 / 31

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Start-up
It is important to check before the first start-up that the technical specifications of the motor, which come on the nameplate,
correspond to the technical characteristics required by the pump and those of the place where the motor is going to operate.
Verify that:
• The characteristics of the mains supply, voltage, number of phases, frequency, and amperage match those of the
motor.
• The electrical panel must be suitable for the type of motor drive, direct start or star-delta.
• The degree of insulation and protection of the motor must correspond to the conditions in which it will operate.
Before final start-up, it is necessary to check the direction of rotation to prevent damage to the thrust assembly. The
direction of rotation of the motor is correct when it coincides with the direction indicated by the arrow cast on the pump
casing (counterclockwise when looking at the motor facing the shaft), see section, 6.5.2.- Checking the Direction of
Rotation.
Start-up
6.5 Engine Considerations !
CAUTION
6.5.1 Instructions for the Connection of Three Phase Electric Motors
To make a delta connection, the bridges are placed in the electric motor box connecting: U with Z, V with X, W with Y. The
wires from the electric panel to the motor junction box connect the terminals: U to U, V to V, W to W, (see fig. No. 18-a).
To make the star connection connect together the three terminals: X-Y-Z of the junction box and connect the terminals U-V-
W with the corresponding terminals U-V-W on the electric panel. The power supply terminals R-S-T must be connected to
the power supply busbars or terminals on the electrical panel (fig. No. 18-b).
Figur e 18 a
Figur e 18 b
Figur e 18 c
Electrical
Panel
Electrical
Panel
Electrical
Panel