ABB ACS 800 Series, Cabinet Installation And Operating Instruction

Page: 116 / 162

Checking the installation
116
3 Busbars
3.1 The types (Al/Cu) and cross-sections of busbars are correct.
3.2 Busbars are intact and joint surfaces are clean. There are no metal scraps on the busbars that could
cause a short-circuit.
3.3 The placement and mounting of busbars is correct.
3.4 The electrical connection of busbars. Check that the surfaces in electrical connections of aluminium
and uncoated busbars are rubbed. Check that anti-oxidant joint compound is used in electrical
connections of aluminium busbars. Check that the number of washers and the sizes of bolts are
correct.
3.5 Busbar supports and lead-in insulators are visually intact and degreased, and placed and mounted
correctly.
3.6 The electrical connections on the main circuit are tightened to required torque and marked with a
green marking.
4 Cabling and wiring
4.1 Wiring of the main circuit. Check
• AC supply input
• AC output
• supply for brake resistor (if used).
4.2 Wiring of the 230 VAC circuit. Check
• terminal strips and relays
• supply of cabinet fans (if used)
• 24 VDC auxiliary voltage circuit (optional module supply)
• supply for cooling fan of the braking resistor(s) (if used).
4.3 Wiring of the converter module circuit. Check
• RDCU module (RMIO board) connections
• control cable connections
• control panel cable connections.
4.4 Cable types, cross-sections, colours and optional markings are correct.
4.5 Check the cabling for circuits susceptible to interference. Check the twisting of cables and cable
routes.
4.6 Check that cables without short-circuit protection
• can carry the load current
• are shorter than 3 m (10 ft)
• are assembled separate to other cables
• are protected by an enclosure or duct.
4.7 Cable connectors and fibre optic cables are intact and according to instructions. Check the termination
of cables (e.g. AMP connectors), the crimping of cable lugs and ferrules. Check that the connectors
are suitable for the cables and the correct crimping tool has been used.
Check that
• insulation of the cable is not underneath the connector
• all strands of the cable are inside the connector
• connector is not broken
• cable is deep enough in its connector.
Step Check item