Nord Drivesystems SK 510P - Electrical Connection of Power Unit; Table 14: Tools; Table 15: Connection Data

2 Assembly and installation
BU 0600 en-2319 39
2.5.3 Electrical connection of power unit
The following information relates to all power connections to the frequency inverter. This includes:
• Mains cable connection X1 (L1, L2/N, L3, PE)
• Motor cable connection X2 (U, V, W, PE)
• Braking resistor connection X3 (B+, B-)
• Link circuit connection (B+, DC-)
When the device is being connected, please note the following:
1. Ensure that the mains supply provides the correct voltage and is suitable for the current required
( Section 7 "Technical data").
2. Ensure that suitable electrical fuses with the specified nominal current range are installed between
the voltage source and the device.
3. Mains cable connection: to terminals L1-L2/N-L3 and PE (depending on device)
4. Motor connection: to terminals U-V-W and PE
5. The cable screening of a shielded motor cable must also be connected to a large area of the
metallic screening bracket of the EMC Kit, however, at least to the electrically conducting mounting
surface of the control cabinet.
The use of wire end rings is recommended for connecting to PE.
Information
Connection cables
Only use copper cables with temperature class 80 °C or equivalent for co
nnection. Higher
temperature classes are permissible.
When using wiring sleeves, the maximum connection cross-section can be reduced.
All power terminals up to Size 2 are plug-in versions.
To connect the power unit, the following tools must be used:
Frequency
inverter
Tool Type
Size 1 … 3
Screwdriver
SL / PZ1; SL / PH1
Table 14: Tools
Frequency inverter Cable Ø [mm²] AWG Tightening torque
Size rigid flexible [Nm] [lb-in]
1 … 3 0.2 … 6 0.2 … 4 24-10 0.5 … 0.6 4.42 … 5.31
Table 15: Connection data