Unidrive
LV
model sizes 1 to 3 Installation Guide
Issue code: uliu1
Data C-3
AC supply requirements
Voltage: 200V ~ 240V ±10%
No. of phases: 3
Maximum supply imbalance:
2% negative phase sequence (equivalent to 3%
voltage imbalance between phases)
Frequency range: 48 to 62 Hz
Line reactors
Line reactors reduce the risk of damage to the Drive
that could result from severe phase unbalance or
disturbances on the supply network. As a result of
the following, for example...
• Power factor correction equipment
connected close to the Drive
• Large
DC Drives having no or ineffective line
reactors connected to the supply
• Direct-on-line started motor(s) connected
to the supply. When any of these motors
are started, a dip is produced in excess of
20% of the actual
AC supply voltage
...excessive peak current may flow in the input
power circuit of the Drive. Such disturbances may
cause nuisance tripping or in extreme cases, failure
of the Drive.
When any of the following model sizes...
UNI1201
UNI1202
UNI1203
UNI1204
UNI1205
...are used on an
AC supply where one of the
conditions described above exists, OR the
AC supply
is rated at more than ten times the current rating of
the Drive, it is strongly recommended that a line
reactor of 2% reactance is included between the
AC supply and the Drive. Model sizes 1205 and larger
have an internal
DC-bus choke; these models do not
require a line reactor except under extreme supply
conditions.
Caution
RFI filters (for EMC purpose)
do not give adequate
protection against these
conditions.
For three-phase Drives, three individual reactors, or
a single three-phase reactor should be used. Each
Drive must have its own reactor(s).
Current ratings
Continuous: Not less than the continuous current
rating of the Drive
Repetitive peak: Not less than twice the continuous
current of the Drive.
Motor requirements
Number of phases: 3
Voltage: 200V ~ 240V ±10%
Temperature, humidity
and cooling method
Ambient temperature range:
0°C to 50°C (32°F to 122°F). Output current
de-rating must be applied at ambient temperatures
between 40°C (104°F) and 50°C (122°F) (absolute
maximum).
Minimum temperature at power-up: –10°C (14°F)
Cooling method: Forced convection
Maximum humidity:
95% non-condensing at 40°C (104°F)
Storage temperature range:
–40°C to 50°C (–40°F to 122°F)
Maximum storage time: After each 12 months, the
capacitors will need re-forming; refer to the supplier
of the Drive.
Altitude
Altitude range: 0 to 4000m (13000 ft), subject to
the following conditions:
1000m to 4000m (3300 ft to 13000 ft) above
sea level: De-rate the maximum output current
from the specified figure by 1% per 100m
(330 ft)
Vibration
Tested to ≤0.5g as specified in IEC 68–2–34
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