Product category:
Motors and Variable speed drives
News Release from: ABB Automation Tech (Drives and Motors) | Subject: ACS800-37
Edited by the Processingtalk Editorial
Team on 25 October 2005
ABB drive offers built-in harmonic
protection
ABB has launched an AC drive aimed at applications where reduced harmonics are a priority, because many drive rectifiers can damage delicate equipment running on the same electrical network
ABB has launched an AC drive aimed at applications where reduced harmonics are a priority The harmonic currents produced by many drive rectifiers can damage delicate equipment running on the same electrical network
This article was originally published on Processingtalk on 6 Aug 2003 at 8.00am (UK)
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The ABB industrial drive ACS800-37 comes with a built-in solution that removes the need for external filters or other protection.
The drive eliminates low-order harmonics using an active rectifier which uses DTC control and high-order harmonics with a line filter.
The exceptionally low harmonic content this solution delivers to the network exceeds the requirements of stringent harmonic standards such as IEEE519 and G5/4, even in the weakest network.
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A significant additional benefit is that these drives always operate with unity power factor.
Eliminating the need for external mitigation measures, such as a dedicated multi-pulse transformer, means less cabling is needed, making the ACS800-37 more compact than alternative drives.
The harmonic performance is superior to 12- or 18-pulse solutions.
Covering a power range from 55 - 2,500 kW and voltages of 380 - 415, 380 - 500 and 575 - 690 V, the low harmonic drives are built in robust cabinets designed for heavy industrial applications.
Protection classes up to IP54 can be supplied.
A wide selection of features and accessories can be accommodated within the drive.
Standard features include the programmable I/O and alphanumeric, multilingual control panel, as well as ABB Start-up Assistant, which provides menu-driven help with parameter setting.
Optional accessories include EMC filters and extension modules for additional I/O and fieldbus adapters.
Harmonic distortion is an increasing cause for concern among drive users and power utilities.
It can disturb power supplies and sensitive equipment, and cause power losses in distribution lines.
Power companies have responded by imposing rigorous power quality standards, leading to a growing demand among end-users for easy-to-apply solutions to mitigate harmonics.
The active rectifier DTC control is based on a software model of the ideal electric properties and actively modulates the output to emulate the ideal condition.
The filter removes high frequency noise due to the converter switching.
The new drives belong to the ABB industrial drives range, which offers a wide variety of standardised configurations to suit different application requirements.
The drives are designed to make specification, installation and commissioning as straightforward as possible.
ABB low harmonic drives can be used in a wide range of motor control applications where improved network power quality is essential.
They are ideal for controlling pumps, fans, compressors and conveyors in sectors such as water and wastewater, HVAC, building automation, mining, gas, oil and chemicals, and marine.
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