Category: Drives

What are the benefits for and against the use of Low Voltage Variable Speed Drives versus Medium Voltage Variable Speed Drives?

Answer: Very good question. It is actually dependant on application details but be wary of some manufacturers who will lead you towards what ever product range they have to sell rather than the best fit for your application. Download the below file for best explanation of the pros and cons of both LV and MV …

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Quantum Controls Launches Their New Generation of Multi-Functional and Modular Multi Power Variable Speed Drive Hire Panels

In this new generation of Hire Panels, we have utilised the latest Variable Speed Drive (VSD) technology from Schneider Electrical as the only authorised Altivar Process Modular (APM) panel builder in the UK. These new Hire Panels are completely weather proof for outdoor use and suitable for indoor too, up to 500KW/880A rating at 400V. …

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Variable Speed Drive Applications

Probably the first question that should be asked is what type of application you are considering for a VSD. There are basically three types: constant torque, variable torque and constant kW applications. It must be pointed out that constant and variable torque loads are the dominate two types of applications. A constant torque load is …

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How to select the right Drive Supplier

Not all variable speed drives suppliers are the same. To help you identify the best supplier for your drives, here are the eight critical things you need, you should expect – even demand. The supplier should employ a team of fully qualified drive experts. Your supplier should be able to take the details of your …

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The True Cost of Neglecting Maintenance

It’s well documented that equipment is getting more complicated, in an effort to help engineers achieve more, with fewer assets, so it is more important than ever to maintain the equipment properly, and sticking to a manufacturers maintenance schedule will undoubtedly extend an assets lifecycle. It is also a fact that the national average cost …

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The correct commissioning of VSDs

The main purpose of commissioning VSDs is to ensure that: The AC converter and motor have been correctly installed and meet the wiring and safety standards such as IEC 60364 The power and motor cables are correctly sized, installed and terminated. All power cable shields have been correctly earthed at both ends, to the PE …

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What cable should I use when installing Variable Speed Drives?

Four-core cables Many installers prefer using four-core cable, as this is the traditional way for many installations and also because it provides an element of convenience, with the earth lead already included within the cable sheath. However, when earthing a drive system, two aspects need to be considered – personal protection and EMC. The protective …

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How can I stop Bearing Current Failures?

How to deal with persistent bearing currents On rare occasions, operators in the process industry may note that their low voltage motors experience a current flowing through the motor bearings, especially when they are used with a variable speed drive (VSD). Left unchecked, these bearing currents will inevitably result in premature failure. Two new approaches can eliminate …

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Your Industrial Emergency Service

You will be all too aware of how disastrous it can be when your site suffers a drive breakdown, this affects the bottom line of your business and your engineering department budget and in extreme cases threatens life itself. So, what do you do when this happens to your site? Do you have a trustworthy …

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Bearing Currents

Some new drive installations can have their bearings fail only a few months after start-up. Failure can be caused by high frequency currents, which flow through the motor bearings. While bearing currents have been around since the advent of electric motors, the incidence of damage they cause has increased during the last few years. This …

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