Start-Up; Electrical Connection - Lowara SSV 30 Serie Instrucciones De Instalacion Y Uso

en

6. Start-up

The noise generated by a properly installed pump operating within the specified range is as shown in the
following table:
2-POLE MOTOR POWER
POWER
Up to 3 kW
4 kW
From 5.5 to 7.5 kW
From 11 to 22 kW
* Measured equivalent (A) continuous acoustic pressure level at a distance of one meter from the pump in an open field.

6.1 Electrical connection

N.B.: The SSV pumps use three-phase motors sized and powered according to European standards.
DANGER
DANGER
RISK OF
ELECTRIC SHOCK
6.2 Overload protections
Three-phase motors
WARNING
DANGER
RISK OF
ELECTRIC SHOCK
6.3 Priming
WARNING
20
4-POLE MOTOR
POWER
Up to 3 kW
–
4 kW
–
–
The motor must be connected by a qualified electrician in compliance with current
electrical regulations. Ensure that the mains voltage corresponds to the voltage
specified on the motor rating plate. To facilitate the connection, the terminal board
can be positioned in one of the 4 positions at 90°. To obtain the best position for the
connection of the supply cables, remove the 4 motor/adapter fastening screws and
rotate the motor to the required position. Then re-install and tighten the 4 screws.
Remove the connection box cover and connect as shown on the back of the cover
and in fig. 4.
The motor must be grounded prior to carrying out any other operations.
Delta connection
Three-phase line
Lower voltage
The motors must be protected from overloads by a suitable remote overload
cutout to protect them from phase failure and excessive voltage fluctuations.
The thermal relay must be set to the rated current or working current if the motor
is not uses at full load.
We recommend the use of a high-sensitivity differential switch (0.03 A) as extra
protection against electrical shock in case of inefficient grounding.
For priming, the pump and suction piping must be filled with liquid before start-
up, as per sections 6.4 and 6.5.
ACOUSTIC PRESSURE
LEVEL (*)
Less than 70 dB(A)
71 dB(A)±2 dB(A)
72 dB(A)±2 dB(A)
75 dB(A)±2 dB(A)
80 dB(A)±2 dB(A)
FIG.4
THREE-PHASE MOTORS
Star connection
Three-phase line
Upper voltage
ACOUSTIC POWER
LEVEL
81 dB(A)±2 dB(A)
82 dB(A)±2 dB(A)
85 dB(A)±2 dB(A)
90 dB(A)±2 dB(A)