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6.3.4
Connecting aluminum conductors
If you are using aluminum conductors, then comply with the following:
● Use only cable lugs that are suitable for connecting aluminum conductors.
● Immediately before inserting the aluminum conductor, remove the oxide layer from the
contact areas on the conductor and/or the mating piece. Do this using a brush or file.
● Then grease the contact areas immediately using neutral Vaseline. This prevents a new
oxide layer from forming.
NOTICE
Aluminum flow due to contact pressure
Aluminum flows following installation due to the contact pressure. The connection using
clamping nuts can loosen as a result. The contact resistance increases, obstructing the
current from being conducted. This can result in fire and material damage to the machine
– or even in total failure, as well as material damage to the plant or system due to machine
failure.
● Retighten the clamping nuts after approximately 24 hours and then again after
approximately four weeks. Make sure that the terminals are de-energized before you
tighten the nuts.
See also
6.3.5
Internal equipotential bonding
The equipotential bonding between the ground terminal in the terminal box and the motor frame
is established via the terminal box fixing bolts and via defined equipotential bonding surfaces.
The contact points for the equipotential bonding connection underneath the bolt heads are
bare metal and protected against corrosion.
The standard cover fixing screws are sufficient as equipotential bonding between the terminal
box cover and terminal box enclosure.
6.3.6
Stepless mating face for sealing in the terminal box cover
The sealing face of the terminal box cover is formed by the terminal box enclosure and the
cable entry element. Therefore make sure these parts are correctly aligned, so as to ensure
the seal and hence the degree of protection.
Align the cable entry support and the cable entry plate to the terminal box enclosure so that
the sealing surface between the terminal box and the terminal box cover form a flat face. There
must be no steps in the sealing area.
Electrical connection
6.3 Inserting and routing the cables
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
Operating Instructions 06/2018
63
Summary of Contents for 1NB1402-2AA84-4CA0-Z
Page 2: ...26 06 2018 15 34 V3 00 ...
Page 10: ...Table of contents SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 10 Operating Instructions 06 2018 ...
Page 22: ...Description SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 22 Operating Instructions 06 2018 ...
Page 84: ...Operation 8 9 Faults SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 84 Operating Instructions 06 2018 ...
Page 112: ...Service and Support SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 112 Operating Instructions 06 2018 ...
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Page 150: ...Additional documents SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 150 Operating Instructions 06 2018 ...
Page 154: ...Index SIMOTICS HV C 1NB1402 2AA84 4CA0 Z 154 Operating Instructions 06 2018 ...
Page 155: ...AF Einbauerklärung Loher LDX U157 AJ EC Declaration of Conformity U161 ...