Degrees Of Protection; Ambient Conditions - ABB ACQ550-x1-06A6-2 User Manual

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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.
Note: UL type 12 enclosure is not available for type ACQ550-01-290A-4.
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 ACQ550 environmental requirements.
Ambient
temperature
humidity
Technical data
• 0...1000 m (0...3 300 ft)
• 1000...2000 m (3 300...6 600 ft) if
Altitude
P and I
N
above 1000 m (300 ft above 3 300 ft)
• Min. -15 °C (5 °F) – no frost allowed
• Max. (fsw = 1 or 4) 40 °C (104 °F);
50 °C (122 °F) if
P and I
N
• Max. (fsw = 8) 40 °C (104 °F) if
P and I
N
• Max. (fsw = 12) 30 °C (86 °F) if
P and I
N
for 600 V, R4 frame sizes, that is for
ACQ550-U1-032A-6 ... ACQ550-
U1-062A-6)
Relative 5...95%, no condensation allowed
Ambient environment requirements
Installation site
derated 1% every 100 m
2N
derated to 90%
2N
derated to 80%
2N
derated to 65% (to 50%
2N
ACQ550-U1 User's Manual
Storage and transportation in the
protective package
-40...70 °C (-40...158 °F)