Dobrina Koleva

Marketing Assistant

Author's posts

Did you know that 16% of motor failures are due to external factors?

Here are the reasons why: 1. Motor operating temperature The industry standard for LV motor insulation systems is class F, with a limit on temperature rise of class B. Other insulation systems offering higher levels of protection are available. Tips: Ensure that the cooling systems of the motor are suitably maintained. Broken fans, clogged vents …

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Did you know that 16% of motor breakdowns are caused by a stator winding failure?

Here are the reasons why: 1. Over Heating The cooler the motor operates, the longer its expected life… A 10°C reduction in operating temperature typically doubles the motors lifetime. Excessive starts are a major cause of over-heating. During a non-VSD start-up a motor typically sees between 6 to 8 times its rated current. This increases …

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Bearing Failure – The Facts

Motors don’t fail just because of age or operating hours. 51% of failures are bearing related. And here are the reasons why: 1. Insufficient lubrication Re-greasable bearings need regular maintenance… don’t fit and forget. For example: TECHNICAL – Insufficient Lubrication Refer to the manufacturer operation and maintenance annual for specific re-lubrication intervals for your motor. …

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How to correctly set up a VSD?

A Variable Speed Drive controls motor speed and torque by varying the motor input voltage and frequency. A very close match between motor speed and the output requirements of the machine it is driving may therefore be achieved. Variable Speed Drives offer the user a number of advantages including: Energy savings Elimination of expensive mechanical …

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Power failure: What does a drive do when power dips?

Public electricity supplies are generally reliable, but they do suffer disturbances. Obviously a total loss of supply results in all electrical equipment stopping, unless it has a backup supply such as a UPS and/or backup generator connected. When the power returns the equipment re-starts from the off state in the way it was designed to …

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Four-core cables – Why these should be avoided in drive installations?

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 earth exists …

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Seven Steps that Save Engineers Lives

The pressure on Todays Busy Engineers has never been higher to continuously improve process performance and reduce costly downtime due to equipment failure. Delivery on KPI’s is vital but nothing is more important than understanding how to work safely, here are the 7 easy steps to always apply.   As an example of electrical safety …

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Quantum wins prestigious ‘Best ABB Drive Service Provider’ from Global 100 of 2018

We are delighted to win this award, our constant drive to always exceed our customers’ expectations in every aspect of our business has led to our growth and success. Winning awards like this is important for our staff and our clients, it enables them to feel assured they are working for and contributing to a …

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Prepare yourself and your machines for the winter conditions!

Cold weather can affect outdoor work in a variety of ways, but the work needs to get done regardless of the elements. Without the right personal protective equipment, working outside in the cold can be uncomfortable or even hazardous. In addition to proper training and safe working conditions, the proper protective equipment can help your …

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What happens when the problem goes beyond the drive application?

Last month we had a callout to a utility customer who had an ABB low harmonic 315kw VSD fail on short circuit failure, this was in the early hours of a Sunday morning and the failure was beyond an onsite repair due to the extent of the damage. So we were on site and installing a hire …

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