Danfoss vlt aqua Design Guide

2.7.7 Star/delta starter or soft-starter not required
When larger motors are started, it is necessary in many countries to use equipment that limits the start-up current. In more traditional systems, a star/
delta starter or soft-starter is widely used. Such motor starters are not required if an adjustable frequency drive is used.
As illustrated in the figure below, an adjustable frequency drive does not consume more than rated current.
1 = VLT AQUA Drive
2 = Star/delta starter
3 = Soft-starter
4 = Start directly on line power
2 Introduction to the VLT AQUA Drive VLT
®
AQUA Drive Design Guide
2-10 MG.20.N5.22 - VLT
®
is a registered Danfoss trademark
2

Danfoss vlt aqua Specifications

General

Supply Voltage	200-240V, 380-500V, 525-600V
Enclosure	IP20
Features	Energy optimization
Approvals	CE, UL, cUL
Input Voltage Range	200-240V, 380-500V, 525-600V
Output Voltage Range	0 to supply voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Ground fault
Communication Interfaces	PROFIBUS
Cooling Method	Air-cooled