Electrical Connections

1 General information on the electrical installation

• Make sure that motor cables are not clamped onto the insulation. Otherwise this will lead to bad contact, high current and melting of the terminals.

File:Cable terminal insulation correct.png Correct! Good contact between cable and terminal.

File:Cable terminal insulation wrong.png Wrong! Cable is clamped onto the insulation.

• Protectors should be used at sharp edges, in order to protect the cables against physical damage.
• Unused holes should be sealed according to IP55 IP Rating.

2 Cabinet Copper Bars

• Check every bus bar connection with a torque wrench and mark it.
• After completion cover up all bus bars with protective plastic, to make sure that nobody can touch energized parts.

File:Electrical Connection Bus Bar Marked.jpg

Marked bus bar connection.

3 Screw Terminals

• Check all screws with a torque wrench and mark them as shown on the pictures.

• Checked and marked grounding connection
  Checked and marked grounding connection
• Checked and marked cabinet connection
  Checked and marked cabinet connection
• Checked and marked S120 connection
  Checked and marked S120 connection
• Checked and marked S120 connection
  Checked and marked S120 connection

4 Spring terminals

• For wires < 0.75mm² cable sleeves should be used, in order to avoid clamping onto the isolation.
• There should be no bare copper outside of the clamp.

• Connection correct
  Connection correct
• Isolation removed too much
  Isolation removed too much
• Clamped on isolation
  Clamped on isolation

5 General Screw Torques

Screw	M4	M5	M6	M8	M10	M12	M16
Torque	1,5 Nm	2,5 Nm	4,5 Nm	10 Nm	20 Nm	40 Nm	80 Nm