Control Product Index

LV AC DRIVES

F7

G7

V7

J7

V1000

J1000

A1000

E7

LnTAC690

LnTAC-HP

MV AC DRIVE

LnTMAC

Applications Notes

CLASSIFICATION OF DRIVES ON RATINGS

Compact LV upto 415 Volts, 300 KW

Modular LV upto 415 Volts, 800 KW

MV drives upto 6.6 KV, 5000 KW

MV drives from 3.3 - 11 KW using slipring motor (rotor side control)

Definition

1. An AC drive or inverter is an electrical or electro-mechanical device that converts direct current (DC) to alternating current (AC); the resulting AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Static Inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries. The electrical inverter is a high-power electronic oscillator. It is so named because early mechanical AC to DC converters were made to work in reverse, and thus were "inverted", to convert DC to AC. The inverter performs the opposite function of a rectifier.

2. A variable-frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive.
Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives, microdrives or inverter drives. Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.