When a motor is driven by its mechanical load, such as in the case of a decelerating flywheel, the motor acts as a generator and the kinetic energy is converted into electrical energy. Often this surplus electrical energy, if it cannot be regenerated, is unwanted and it can be harmful to the electrical motor drive system.
There are internationally and nationally recognized ones while others are imposed individually by merchants and retailers. They embrace every stage of a fabric's life, right from the yarn through to the finished product and cover such characteristics as strength, color fastness and pilling & abrasion.
REO, manufacturer of high quality power equipment, including electronic controllers, wound components and electrical regulators has just published a new web site with the intention of helping visitors find information and solutions quicker and more efficiently.
Frequency inverters, which normally have switching frequencies from 2 to 20kHz, produce considerable common-mode (asymmetrical) noise. The fast switching of the DC voltage causes voltage peaks in motor cables and the longer the length of cable the higher the amplitude of the voltage peaks.
It is the latest addition to the company's extensive reference library of handbooks that is available via its web site, www.reo.co.uk.
With an increase in frequency drive applications that demand more power whilst operating in reduced space envelopes and the need for systems to work in high ambient conditions beyond the bounds of forced air-cooled designs, REO is now offering drive system components suitable for water-cooled installation.
A new range of medical isolation transformers called PROMED, with power ratings of up to 8 kVA (1 and 3-phase), has been introduced by REO.
A new range of braking resistors designed for applications such as lifts, elevators, cranes and high inertia loads, particularly where space is limited, has been introduced by REO UK Ltd. They are ideally suited to absorbing surplus energy generated by traction motors when loads are being lowered.
With a focus on alternative and renewable energy increasing globally, REO (UK) has launched a transformer that allows solar power to be fed back onto the public supply network.
To help you get to grips with the new Directive, REO UK has published a new handbook which is available as a free download or can be ordered in hard copy via the company's web site.