Instrumentation, Busbars And Cabling - ABB ACS800-U4 Hardware Manual

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Instrumentation, busbars and cabling

Checks for instrumentation, busbars, cabling, clearances and creepage distances
are listed below.
Step Check item
2 Instrumentation
2.1 Type and number of option modules and other equipment is correct. Option modules and other
equipment are not damaged.
2.2 Option modules and terminals are labelled correctly.
2.3 The placement of option modules and other equipment inside the cabinet and on the cabinet door
is correct.
2.4 The mounting of option modules and other equipment is correct.
3 Busbars
3.1 The types (Al/Cu) and cross-sections of busbars are correct.
3.2 Busbar bendings are unbroken and joint surfaces are clean. There are no metal scraps on the
busbars that could cause short circuit.
3.3 The placement and the 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 is correct and the
sizes of bolts are correct.
3.5 Busbar supports and lead-in insulators are visually intact and ungreased, 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
• control cable connections
• control panel cable connection.
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.
Checking the installation
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