Nord Drivesystems SK 180E Series, User Manual

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2 Assembly and installation
BU 0180 en-4118 31
2 Assembly and installation
2.1 Installation SK 1x0E
The devices are available in various sizes depending on their output. They can be mounted on the
terminal box of a motor or in its immediate vicinity.
Motor-mounted version Wall-mounted version
When a complete drive unit (gear unit + motor + SK 1x0E) is delivered, the device is always fully
installed and tested.
Information
Device version IP6x
IP6x-compliant devices must be installed by NORD, since special measures have to be implemented. IP6x
components that are retrofitted on site cannot ensure that this protection class is provided.
When delivered separately, the device includes the following components:
• SK 1x0E
• Screws and contact washers for mounting the motor terminal box
• Pre-fabricated cable for motor and PTC connections
Information
Power derating
The equipment requires
sufficient ventilation
to protect against overheating. If this cannot be guaranteed, this
results in power reduction (derating) of the frequency inverter. The ventilation is influenced by the type of
installation (motor-mounting, wall-mounting) and/or with motor-mounting: the air flow of the motor fan (continuous
slow speed

lack of cooling).
Insufficient cooling can result in power reduction of 1 - 2 power stages during S1 operation, for example, which
can only be compensated for by using a nominally bigger device.
Details concerning output reduction and possible ambient temperatures, and other details (

Section 7
"Technical data").