Vacon NXI FI10 series, Руководство пользователя

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cabling and connections vacon 55
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6
6.1.3 Cable installation and the UL standards
To meet the UL ( Underwriters Laboratories ) regulations, a UL-approved copper cable with a
minimum heat-resistance of +60/75

C must be used.
Use Class 1 wire only.
The tightening torques of the terminals are given below in Table 6
-
8.
Type Enclosu
re size
DC terminals
Tightening torque [Nm]
AC terminals
Tightening torque [Nm]
Bolt Ø Min Nom Max Bolt Ø Min Nom Max
NXI_0168 - 0300 5
NXI_0125
–0208 6
FI9
M10 35
40 45
M10
35 40 45
NXI_0385 - 0520 5
NXI_0261 - 0416 6
FI10
M12 65
70 75
M10
35 40 45
NXI_0590 - 1030 5
NXI_0460 - 0820 6
FI12
M10 35
40 45
2 x M10
35 40 45
NXI_1150 - 1450 5
NXI_0920 - 1180 6
FI13 M12 65 70 75 3 x M12 65 70 75
NXI_1770 - 2700 5
NXI_1500 - 2250 6
FI14 M12 65 70 75 6 x M12 65 70 75
Table 6
-
8. Tightening torques of terminals
6.1.4 Cable and motor insulation checks
1.
Motor cable insulation checks
Disconnect the motor cable from terminals U, V, and W of the inverter and from the motor.
Measure the insulation resistance of the motor cable between each phase conductor as well as
between each phase conductor and the protective ground conductor.
The insulation resistance must be >1M

.
2.
DC supply cable insulation checks
Disconnect the DC supply cable from terminals DC- and DC+ of the inverter and from DC supply.
Measure the insulation resistance between each conductor and ground.
The insulation resistance must be >1M

.
3.
Motor insulation checks
Disconnect the motor cable from the motor and open the bridging connections in the motor
connection box. Measure the insulation resistance of each motor winding. The measurement
voltage must equal at least the motor nominal voltage but not exceed 1,000 V.
The insulation resistance must be >1M

.