Motor Connections; Operating With Variable Frequency Drive - HYDROO VDROO Serie Manual De Instrucciones De Instalación Y Operación

6.8. Motor connections

ATTENTION:
The motor must be connected through a quick and efficient starter to
avoid damage because of phase lacking, unstable voltage or overload.
The motor must be connected to the mains by means of the suitable
power leads according to its power (check the table with the
recommended values for electric connections and safety elements).
380 V (50/60 Hz)
Motor power Lead
No Current [A]
[kW] connection
1 0.37 Y 1
2 0.55 Y 1,4
3 0.75 Y 1,8
4 1.1 Y 2,6
6 1.5 Y 3,5
8 2.2 Y 4,9
11 3 Y 6,3
13 4 Δ 8,2
15 5.5 Δ 11
16 7.5 Δ 15
17 11 Δ 21
18 15 Δ 29
19 18.5 Δ 35
20 22 Δ 41
21 30 Δ 55
22 37 Δ 68
23 45 Δ 82
25 55 Δ 100
26 75 Δ 134
27 90 Δ 160
28 110 Δ 197
84
Lead
Breaker Thermal
specifications
[A] protection [A]
[mm 2 ]
0.75 5 1.2
0.75 5 1.7
0.75 5 2.2
1 5 3.1
1 10 4.2
1.5 10 5.9
1.5 10 7.6
2.5 20 9.8
2.5 20 13.2
4 20 18
4 25 25.2
6 32 34.8
10 40 42
16 60 49.2
16 60 66
25 80 81.6
35 100 98.4
70 160 120
70 160 160.8
90 200 192
90 250 231

6.9. Operating with variable frequency drive

All three phase motors supplied by Hydroo can be connected to a variable frequency
drive.
All motors working with a variable frequency drive should be protected against voltage
peaks over 1200V to 2000V µsec.
ATTENTION:
Depending on the variable frequency drive motor noise may increase. It
may also expose the motor to undesirable voltage peaks.
The above problems, noise increment and voltage peaks can be reduced
or eliminated by adjusting the LC filter between the variable frequency
drive and the motor.
For additional information, contact the distributor of the variable
frequency drive or the one of the motor.
85