Unidrive M / HS Frame 7 to 10 Power Installation Guide 39
Safety information Product information
Mechanical installation
Electrical installation Technical data UL listing information
3.8 Enclosing standard drive for high environmental protection
An explanation of environmental protection rating is provided in section 5.1.9 IP / UL Rating on
page 102.
The standard drive is rated to IP20 pollution degree 2 (dry, non-conductive contamination only)
(NEMA 1). However, it is possible to configure the drive to achieve IP65 rating (size 7 and 8) or IP55
(size 9 and 10) (NEMA 12) at the rear of the heatsink for through-panel mounting.
This allows the front of the drive, along with various switchgear, to be housed in a high IP enclosure
with the heatsink protruding through the panel to the external environment. Thus, the majority of the
heat generated by the drive is dissipated outside the enclosure maintaining a reduced temperature
inside the enclosure. This also relies on a good seal being made between the heatsink and the rear
of the enclosure using the gasket and securing brackets provided.
The main gasket should be installed as shown in Figure 3-13.
Figure 3-13 Installing the gasket
Drive
Gasket
Enclosure
rear wall
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