ABB ACS880-77CC, Hardware Manual

Page: 92 / 128

Efficiency
96.5% at nominal load with power factor 1.0 at 690 V.
Degree of protection
The converter is labeled as IP21, IP2x with cubicle doors open.
Environmental and corrosion classification
The expected lifetime for the converter cabinet enclosure is considered to be at least 20 years
under the following environmental classifications and corrosion class.
Environmental classifications in accordance with IEC60721-3-3
3K5
1)
• Climatic conditions
3Z11
2)
• Special climatic conditions
3C2
• Chemically active substances
3S2
• Mechanically active substances
3M1
• Mechanical conditions
Corrosion class in accordance with 12944-1
C3L
3)
• Corrosion class for the cabinet enclosure (painted surfaces, pre-treatment
FeP, polyester powder paint thickness 80 µm)
1) Condensation and/or formation of ice inside the converter cabinet is not allowed in any operational circumstances.
2) ABB additional extension to ambient surrounding temperature, outside the cabinet, -30 °C…55 °C (-22 °F…131 °F). See
also the instructions for ambient temperature derating.
3) L denotes service life >15 years.
Disclaimer
The customer shall ensure that the environmental conditions inside the wind turbine is maintained in order to
fulfill the environmental classifications and/or corrosion class, as herein stated. If the operational condition is
out of any environmental classifications and/or corrosion class, the expected lifetime of the converter may be
risked and the ABB converter warranty is terminated. If the customer is unsure about the environmental con-
ditions and/or corrosion class inside the wind turbine, the customer is responsible for contacting ABB before
the converter installation, and get an approval from ABB to use the converter in such an environmental condition
and/or corrosive class.
92 Technical data