NORD Drivesystems BU0750 - Manual (Page 12)

NORDAC SK 750E Manual
12 Subject to technical amendments BU 0750 GB-3311
1.7 Version with protection class IP54 / IP65
TheNORDAC SK 750E frequency inverter can be ordered in any size and therefore any power stage with the
protection classes IP54 (air cooling) or IP65 (water cooling). These versions can be differentiated by the type
designation. The water cooled version has a "-W"
(→ Water cooling) at the end of the type designation.
The protection classes IP54 or IP65 must always be stated when ordering!
The protection classes are determined by the type of cooling. With the air cooled device, the integrated fans
determine the protection class IP54; with the IP65 devices this is determined by the flange to the water cooling.
With the technology units, customer interfaces and special extensions there are no restrictions of functionality
between the IP54 and IP65 versions.
IP54 version:
The protection class IP54 applies for the air cooled SK 750E. Both versions (motor-integrated, close to motor)
are available. The standard modules of the SK 300E (SK TU2-
…) and SK 700E (SK CU1-…, SK XU1-…) can
be inserted.
IP65 version:
The water cooled IP65 version has an additional "-W"
(→ Water cooling). Both versions (motor-integrated,
close to motor) are also available. In addition, for IP65 devices the technology units (SK TU2- …-C) of the
SK 300E, have an additional "-C" (C oated → lacquered PCBs) in their type designation. As with the IP54
devices, the same standard modules of the SK 700E are inserted as customer interfaces (SK CU1-...) and
special extensions (SK XU1-...).
Note
The IP65 components and IP66 options (technology units) for the water cooled IP65 version have an
additional "-C" and are modified with the special measures listed below!
Special measures:

Coated circuit boards
Note
With the the IP65 version it must be ensured that the cable lines and cable connections are carefully
matched so that no leaks occur in the SK 750E or any other problems occur that could affect the
maintenance of the IP65 protection class!