du/dt Filters Installation Guide
7
• NOCH0xxx-6x filters are designed to cool by natural convection, thus the
following free space requirements apply:
Wall-mounted filter units:
300 mm on each free side. Exception: 500 mm above the filter if installed below
the drive.
Floor-mounted filter units:
300 mm on each free side. Exception: 50 mm between single-phase filters on
the same transmission line. Exception: 500 mm above the filter if installed
below the drive.
Technical data
Nominal voltage: 380 … 690 V ± 10%.
Rated short-time withstand current: 50 kA 1 s.
Applicable standards and markings: EN 60204-1, EN 60529, EN 61800-3,
EN 50178, CE marking, UL approval.
Ambient conditions, operation
Ambient operating conditions refer to the conditions du/dt filters are subjected to
when installed for stationary use.
Air temperature: -15 to +50
°C. At temperatures from +40 °C to +50 °C, the rated
output current is decreased by 1% for every additional 1
°C. The output current is
calculated by multiplying the current given in the rating table by the derating factor.
Relative humidity: 5% to 95%, no condensation allowed. Maximum allowed relative
humidity is 60% in the presence of corrosive gases.
Installation site altitude: 0 to 4000 m. At altitudes from 1000 to 4000 m above the
sea level, the rated output current is decreased by 1% for every 100 m.
Vibration:
AOCH0xxx-70: Max 1 mm (5 to 13.2 Hz), max 7 m/s
2
(13.2 to 100 Hz) sinusoidal
(IEC 60068-2)
NOCH0xxx-6x: Max 0.3 mm (2 to 9 Hz), max 1 m/s
2
(9 to 200 Hz) sinusoidal
(IEC60068-2)
Shock: Max 70 m/s
2
, 22 ms (IEC 60068-2-27)
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