Danfoss VLT 3000 Series User Manual

12 MG.30.A7.02 - VLT
®
is a registered Danfoss trademark
Choice of frequency
converter size
The frequency converter must be chosen
on the basis of the actual motor current I
M
at maximum load of the plant.
The rated continuous output current I
VLT,N
must be equal to or higher than the
required motor current.
Sizing
Example:
In a heating plant (quadratic load) the
pump motor is a 7.5 kW, 3 x 380 V, which
at max. load takes up 14 A.
Choose a VLT
®
3008 which can supply
16 A (I
VLT,N
) continuously.
Mains: 3 x 200/220/230 V and 3 x 220/230/240 V (see technical data)
Which one
to choose?
The VLT
®
types larger
than 3004 (3008 at 500 V) have
a higher output when using
quadratic load,
referred to as VT load
(variable torque).
Some technical specifications
might change from
CT to VT mode (e.g. the max.
motor cable length
decreases).
: Intermittent operation
: In continuous operation some specifications might change
CT VT CT VT CT VT
Typical shaft Constant output Constant output
VLT
®
type output current I
VLT.N
power at 230 V
[kW] [A] [kVA]
3002 1.1 5.4 2.1
3003 1.5 7.8 3.1
3004 2.2 10.5 4.2
3006 4.0 5.5 19 25 7.6 10.0
3008 5.5 7.5 25 32 10.0 12.7
3011 7.5 11 32 46 12.7 18.3
3016 11 15 46 61 18.3 24.3
3022 15 22 61 88 24.3 35.1
3032 22 30 80 104 31.9 41.4
3042 30 37 104 130 41.4 51.8
3052 37 45 130 154 51.8 61.3
CT: Constant torque
VT: Variable torque (quadratic load)
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Danfoss VLT 3000 Series Specifications

General

Brand	Danfoss
Model	VLT 3000 Series
Category	Media Converter
Language	English