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Schneider Altivar 71: The best choice for heavy duty industry


29.09.2022

In industry and the domestic sphere, in almost any technical system, a combination of an asynchronous motor and a frequency converter is used. Despite the obvious advantages of an asynchronous motor over a DC motor, its weakness was the difficulty in regulating the rotation speed. This problem has now been fixed thanks to variable speed drives.Schneider Altivar

The variable speed drive or frequency converter is designed to transfer alternating current from one frequency to another, that is, to change its voltage by rectifying the mains and converting it into a three-phase one.

In industry and the domestic sphere, in almost any technical system, a combination of an asynchronous motor and a frequency converter is used. Despite the obvious advantages of an asynchronous motor over a DC motor, its weakness was the difficulty in regulating the rotation speed. This problem has now been fixed thanks to variable speed drives.

The variable speed drive or frequency converter is designed to transfer alternating current from one frequency to another, that is, to change its voltage by rectifying the mains and converting it into a three-phase one.

Today we will look at the Schneider Altivar 71 variable speed drive line.

What is Altivar 71?

Altivar 71 (ATV 71) is a variable speed drive for 3-phase asynchronous electric motors with Schneider Altivar 71 motor overload protection.

Altivar 71 frequency converters are designed for motors from 0.37 to 630 kW with four types of mains supply:

  1. Single-phase, 200 - 240 V, from 0.37 to 5.5 kW.
  2. Three-phase, 200 - 240 V, from 0.37 to 75 kW.
  3. Three-phase, 380 - 480 V, from 0.75 to 500 kW.
  4. Three-phase, 500 - 690 V, from 1.5 to 630 kW.


This series of variable speed drives allows you to control, using the flux vector control (CVF) algorithm, asynchronous motors in open and closed loop speed control systems and synchronous motors with sinusoidal EMF in an open system.Schneider ATV71

With the main supply of 200 - 240 V and a 380 - 480 V, a functional range of frequency converters is offered, which allows you to control synchronous motors with a sinusoidal E.D.S. in a closed loop speed control system.

Options of Schneider Altivar 71

The Schneider Electric Altivar 71 series of converters are offered in various designs.

IP 54 options for harsh environments:

  • Inverter with the degree of protection UL type 12/IP 54, at a 380 - 480 V from 0.75 to 75 kW (ATV 71W···N4).
  • Converter with the degree of protection UL type 12/IP 54 with Vario disconnector, at 380 - 480 V from 0.75 to 75 kW (ATV 71E5···N4).
  • Complete converter cabinet version with the degree of protection IP 54, at 380 - 415 V from 90 to 500 kW (ATV 71EXS5 N4), at 500 V and 600 - 690 V from 90 to 630 kW (ATV 71EXS5 N and ATV 71EXS5···Y).
  • The complete cabinet provides a certified solution for IP 54 cabinets, this simple and economical solution allows you to order all the necessary mechanical accessories for the implementation of an IP 54 cabinet (VW3 A9 541 - VW3 A9 551) under one catalog number. This offer is for Altivar 71 UL type 1/IP 20 drives from 90 to 500 kW 380 - 480 V (ATV 71HD90N4 - HC50N4).
  • The offer for the ATV 71EXS5···N4, ATV 71EXS5···N, and ATV 71EXS5···Y drives are designed to facilitate commissioning in very dirty environments and in particular to guarantee good cabinet ventilation thanks to separate power and control part of the converter.

Variants of compact cabinets for industrial and infrastructure applications (tunnels, waterworks, etc.):
The complete converter is in compact cabinets IP 23 or IP 54.

  • at a 380 - 415 V from 90 to 500 kW (ATV 71EXC····N4);
  • at a 500 V from 90 to 630 kW (ATV 71EXC····N);
  • at a 600 - 690 V from 90 to 630 kW (ATV 71EXC····Y).

Variant for non-ventilated environments:

  • Platform converter, at 380 - 480 V from 0.75 to 11 kW (ATV 71P···N4Z).

Altivar 71 Drive

The Altivar 71 frequency converter meets the most stringent application requirements by using a variety of motor control laws and numerous functionalities. It is adapted to solve the most difficult electric drive tasks - torque and increased accuracy when operating at very low speed and improved:Altivar 71

  • Dynamic performance with flux vector control algorithms in open-loop or closed-loop drive systems;
  • The extended output frequency range for high-speed motors;
  • Parallel connection of motors and special drives using a scalar control law;
  • Accuracy of keeping speed and energy saving for an open-loop drive with synchronous motor;
  • Smooth, shock-free control of unbalanced mechanisms using the Energy Adaptation System (ENA).

With the extension of the main power supply to ~690V, the versatility of the Altivar 71 increases the productivity and flexibility of the machines for numerous applications:

  • Handling equipment.
  • Loading and unloading operations.
  • Filling and packaging equipment.
  • Textile machines.
  • Woodworking machines.
  • Technological equipment.
  • Elevators.

If you need to get the best altivar 71 price just contact Eltra Trade managers. We offer full range of Schneider Altivar products