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112 Technical data
Generator connection data
Generator types
Voltage (U
)
2
Output frequency (f
)
2
Switching frequency
Frequency resolution
Current
Field weakening point
BCU control unit
See chapter
Control units of the
Efficiency
96.5% at nominal load with power factor 1.0 at 690 V.
Degree of protection
The converter is labeled as IP54, IP2x with cubicle doors open.
Some customer variants may be different, eg, the LCL filter cubicle, converter module
cubicles and auxiliary control cubicle: IP54. Main breaker cubicle: IP21. In this case, the
converter is labeled as IP21.
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
• Climatic conditions
• Special climatic conditions
• Chemically active substances
• Mechanically active substances
• Mechanical conditions
Corrosion class in accordance with 12944-1
• Corrosion class for the cabinet enclosure (painted surfaces,
pre-treatment FeP, polyester powder paint thickness 80 µm)
Notes:
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 section
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
AC induction generators, permanent magnet generators
0 ... 110% U
, 3-phase symmetrical, U
1
8...200 Hz
2 kHz (average)
0.01 Hz
See section
Ratings
on page
8 ... 300 Hz
converter.
Temperature derating
750 V
max
107.
1)
3K5
2)
3Z11
3C2
3S2
3M1
3)
C3L
on page 108.
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