Sigmatek FDD Sizes 7 to 9 Power Installation Guide
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5.1.9 IP / UL Rating
The 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 (sizes 7 and 8) or IP55 rating
(size 9) (NEMA 12) at the rear of the heatsink for through-panel mounting .
The IP rating of a product is a measure of protection against ingress and contact to foreign bodies
and water. It is stated as IP XX, where the two digits (XX) indicate the degree of protection provided
as shown in Table 5-7.
Table 5-7 IP Rating degrees of protection
Table 5-8 UL enclosure ratings
5.1.10 Corrosive gasses
Concentrations of corrosive gases must not exceed the levels given in:
•
Table A2 of EN 50178:1998
•
Class 3C2 of IEC 60721-3-3
This corresponds to the levels typical of urban areas with industrial activities and/or heavy traffic, but
not in the immediate neighborhood of industrial sources with chemical emissions.
Concentrations of corrosive gases must not exceed the levels given in:
•
Table A2 of EN 50178:1998
Printed Circuit Board & Component Solder technology are conformal coated to survive environments
as described by IEC60721-3-3 3C3 and EN60068-2-60 Meth. 4. This corresponds to the levels
typical of urban areas with industrial activities and/or heavy traffic and in the immediate
neighborhood of industrial sources with chemical emissions.
First digit
Second digit
Protection against foreign bodies and access to
hazardous parts
Protection against ingress of water
0
Non-protected
0
Non-protected
1
Protected against solid foreign objects of 50
mm
and greater
(back of a hand)
1
Protected against vertically falling water drops
2
Protected against solid foreign objects of
12.5mm
and greater
(finger)
2
Protected against vertically falling water drops
when enclosure tilted up to 15 °
3
Protected against solid foreign objects of 2.5
mm
and greater (tool)
3
Protected against spraying water
4
Protected against solid foreign objects of
1.0mm
and greater (wire)
4
Protected against splashing water
5
Dust-protected (wire)
5
Protected against water jets
6
Dust-tight (wire)
6
Protected against powerful water jets
7
-
7
Protected against the effects of temporary
immersion in water
8
-
8
Protected against the effects of continuous
immersion in water
UL rating
Description
Type 1
Enclosures are intended for indoor use, primarily to provide a degree
of protection against limited amounts of falling dirt.
Type 12
Enclosures are intended for indoor use, primarily to provide a degree
of protection against dust, falling dirt and dripping non-corrosive
liquids.
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