1.7 Selecting the Correct Frequency Converter
1.7.1 Introduction
This section explains how to specify and order a VLT 2800.
The frequency converter must be selected on the basis of the present motor current at maximum loading of the unit. The
frequency converter's rated output current I
INV.
must be equal to or greater than the required motor current.
Mains Voltage
VLT 2800 is available for 2 mains voltage ranges:
•
200-240 V and
•
380-480 V.
Select whether the frequency converter is connected to a mains voltage of:
•
1x220-240 V single-phase AC voltage
•
3x200-240 V 3-phase AC voltage
•
3x380-480 V 3-phase AC voltage
Typical shaft output
P
INV.
Maximum constant output current I
INV.
Maximum constant output power at
230 V S
INV.
Type
[kW]
[HP]
[A]
[kVA]
2803
0.37
0.5
2.2
0.9
2805
0.55
0.75
3.2
1.3
2807
0.75
1.0
4.2
1.7
2811
1.1
1.5
6.0
2.4
2815
1.5
2.0
6.8
2.7
2822
2.2
3.0
9.6
3.8
2840
3.7
5.0
16
6.4
Table 1.1 1x220-240 V Mains Voltage
Typical shaft output
P
INV.
Maximum constant output current I
INV.
Maximum constant output power at
230 V S
INV.
Type
[kW]
[HP]
[A]
[kVA]
2803
0.37
0.5
2.2
0.9
2805
0.55
0.75
3.2
1.3
2807
0.75
1.0
4.2
1.7
2811
1.1
1.5
6.0
2.4
2815
1.5
2.0
6.8
2.7
2822
2.2
3.0
9.6
3.8
2840
3.7
5.0
16.0
6.4
Table 1.2 3x200-240 V Mains Voltage
Introduction to VLT 2800
Design Guide
MG27E402
Danfoss A/S © Rev. May/2014 All rights reserved.
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