ABB ACS550 - Degrees of Protection; Ambient Conditions

ACS550 User’s Manual 289
Technical data
Degrees of protection
Available enclosures:
• IP21 / UL type 1 enclosure. The site must be free of airborne dust, corrosive
gases or liquids, and conductive contaminants such as condensation, carbon
dust and metallic particles.
• IP54 / UL type 12 enclosure. This enclosure provides protection from airborne
dust and light sprays or splashing water from all directions.
Compared to the IP21 / UL type 1 enclosure, the IP54 / UL type 12 enclosure has:
• the same internal plastic shell as the IP21 enclosure
• a different outer plastic cover
• an additional internal fan to improve cooling
• larger dimensions
• the same rating (does not require a derating).
Ambient conditions
The following table lists the ACS550 environmental requirements.
Ambient environment requirements
Installation site
Storage and transportation in the
protective package
Altitude
• 0…1000 m (0…3 300 ft)
• 1000…2000 m (3 300…6 600 ft) if
P
N
and I
2N
derated 1% every 100 m
above 1000 m (300 ft above 3 300 ft)
Ambient
temperature
• Min. -15 °C (5 °F) – no frost allowed
• Max. (fsw = 1 or 4) 40 °C (104 °F);
50 °C (122 °F) if
P
N
and I
2N
derated to 90%
• Max. (fsw = 8) 40 °C (104 °F) if
P
N
and I
2N
derated to 80%
• Max. (fsw = 12) 30 °C (86 °F) if
P
N
and I
2N
derated to 65% (to 50%
for 600 V, R4 frame sizes, that is for
ACS550-U1-032A-6 … ACS550-U1-
062A-6)
-40…70 °C (-40…158 °F)
Relative
humidity
< 95% (non-condensing)
Contamination
levels
(IEC 721-3-3)
• No conductive dust allowed.
• The ACS550 should be installed in
clean air according to enclosure
classification.
• Cooling air must be clean, free from
corrosive materials and free from
electrically conductive dust.
• Chemical gases: Class 3C2
• Solid particles: Class 3S2
Storage
• No conductive dust allowed.
• Chemical gases: Class 1C2
• Solid particles: Class 1S2
Transportation
• No conductive dust allowed.
• Chemical gases: Class 2C2
• Solid particles: Class 2S2