Lighting, switchgear, drives ...

Electric motor performance testing and reliability assessment Part 1

This article explores how the cost of condition monitoring can be optimised through examination of the value of each test performed. Treating every motor on...

Medium voltage industrial variable speed drives: Part 2

This article considers the technologies and topologies of MV drives, their advantages, disadvantages, and their impact on the quality of energy on the mains...

IE3-IE4 motors: selecting the right control and protection components

Worldwide demand for energy is expected to double by 2050. At the same time, governments must halve their countries’ CO2 emissions to halt climate...

Surge protection in low-voltage switchgear assemblies

IEC standards now recommend that surge protective devices be installed at the supply point of the facility. The publication of the installation standards IEC 60364-4-44...

Softstarters, variable-speed drives or both?

Which is more cost-effective in reducing energy consumption and providing the most satisfactory payback time in pump applications, frequency converters or soft starter technologies? In...

The advantages of the small permanent magnet motor

With an estimated 2-billion units installed, small motors (<750 W) are reported to account for 90% of the global electric motor population . Small electric...

Choosing a variable frequency drive or soft starter for your needs

A closer look at soft starters and VFDs, their advantages, disadvantages and applications. A large starting current may be required (typically 5 – 7 x...

Medium voltage industrial variable speed drives

This article considers the technologies and topologies of MV drives, their advantages disadvantages and their impact on the quality of energy on the mains...

Bearing damage in AC motors operating from PWM variable-frequency drives

Motor manufacturers are reporting an increase in damage to bearings and connected equipment caused by electrical current flow. The failure rate of bearings and connected...

Low-voltage air circuit breakers: the case for preventive maintenance

Equipment damage, arc flash hazards and unplanned outages are greatly reduced when overcurrent protection devices are operated and maintained properly. Business owners and facility management...
Cart Item Removed. Undo
  • No products in the cart.