
Unidrive M / HS Frame 7 to 10 Power Installation Guide
35
Issue Number: 5
Safety i
P
Me
ch
an
ic
E
Te
UL
li
3.8
Enclosing standard drive for high environmental protection
An explanation of environmental protection rating is provided in section 5.1.9
page 98.
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
Gas
k
et
Enc
l
osure
rear wa
ll
Unidrive M frame7 to 10 Power Installation Guide issue5.book Page 35 Tuesday, May 24, 2016 11:52 AM