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Can High Efficiency direct drive motors replace Conventional Transmissions?

The focus is on saving energy, but how to save energy, over the life of the product, is not easily identified.

Electric motor gearbox transmissions are prevalent in the manufacturing industry; this type of transmission has losses in the motor, gearbox and regular maintenance costs, resulting in a high cost of ownership and energy efficiency.

With the adoption of the motor efficiency regulations in the UK and the USA, carbon credits and ever increasing cost of energy, manufactures are under pressure to improve the overall energy usage.

For new systems, higher efficiency motors have to be specified, but what is to be done about the current installed base of motors and drive systems?

Each application is different, adding a variable speed drive is the starting point and depending on the age of the installation, total replacement should be a consideration.

If a replacement is decided upon, most would look at a like for like replacement, but is this the best option for all electric motor/gearbox transmission systems?  Alldrives & Controls, a specialist drives and controls supplier, thinks not.

Direct drive, new technology for Power transmission systems.

Starting from basic principles, Magnetic identified a number of key problems associated with motor gearbox systems, efficiency, system size, overload capacity, sealing protection, maintenance, electrical and Mechanical reliability.

Now fully developed, the new high efficiency IP54 HTQ drive technology, available in a range of powers and drive torques, simplify transmission systems, increase reliability, increase efficiency and avoid gearbox issues. Based on permanent magnets synchronous motor technology, the HTQ motor has high drive torque, is able to operate in the stall condition with a high overload capacity so stopping shaft breakages under fault conditions or gear box stripping.

Covering a wide range of applications requiring high starting/run torques at low speeds, peristaltic pumps, rolling mills, Injection moulding, lifts, etc. the HTQ has stall torques (Tn0) from 52Nm, with 200Nm (Tp) Peak run torque in a 750 watts frame, to 1750Nm (Tn0) & 3300Nm (Tp) in a 50Kw frame with specials available over 15,000Nm, to replace motor gearbox systems.

Electrical Reliability

The HTQ series use multi-pole rare earth neodymium iron boron magnets fitted into the rotor in a propriety method and completely enclosed in an epoxy protection coating. The mechanical and magnetic circuits are defined, controlled, and stable under all operating conditions.

The series use propriety insulated winding wire with class H, high frequency permittivity/dielectric isolation characteristics to maximise the Inverter/Motor conversion efficiency.

High frequency current/voltage pulses used in modern Inverters create high dv/dt voltages, high amplitude, frequency and   harmonics in the stator windings, and in normal enamels these conditions can electrically breakdown the enamel coating, leading to premature electrical failure. The motors have high resistance to transient spikes, high frequencies, short rise time pulses and are electrically reliable in real world applications.

Light weight aluminium construction, hollow and shaft versions are available. If you need further technical information to find a suitable HTQ motor for your application contact:

Alldrives & Controls the UK representative for Magnetics please get in contact.


High Efficacy and cool looks, the new Eta-Plus range from WEG

Württembergische Elektromotoren GmbH, or WEG for short, who AllDrives & Controls is proud to represent in the United Kingdom, manufactures precision drive solutions between 40 watts and 1100 watts. WEG performance, matched to the application demand, results in the greatest energy savings.

In keeping with WEG`s Corporate environmental philosophy WEG has taken the avant-garde step to develop and launched high efficiency 4 pole motors in the 50 W to 370 W power range.

This high efficiency range has been achieved by optimising the motor design and is believed to be the first sub-750 watt energy-saving motors to comply with the Premium-Efficiency IE3 standard.

Although not required to comply with the IE3 regulations below 750 watt, which come into force in January 2017, WEG`s customers and suppliers value and support the fact that WEG`s use of precious resources, striking a good balance between costs and the environment, is an integral part of WEG`s corporate philosophy.

The Eta-Plus range of drives will reassure design and system integrator engineers that their applications are not only system efficient, but fully fit for the future and use minimal resources.

WEG has two series under the name “Eta-Plus”. The SD range without fans for 50 to 250 W and the VD range with fans for 90 to 370 W.

Compared with standard motors of the same output power in the market, the Eta-Plus motors are 33% more efficient, require up to 25 % less electrical power enabling users to enjoy lower operating costs, resulting in greater efficiency paybacks after a short operating period.

WEG Eta Plus Motors C02 Efficient

In addition to the financial rewards from using WEG Eta Plus motors, the investment can attract carbon credits by producing less CO2.

All “Eta-Plus” 4 pole three-phase motors can be combined with the wide range of WEG gear units of various designs and ratios to produce tailored drive solutions.

The fresh, dynamic blue livery and smooth external shape, thanks to the optimised motor layout, distinguishes them from the well-known WEG drives.

The Eta Plus motors feature a temperature monitor integrated in the stator coil so that thermal management can be maintained during operation.

With no need for cooling fins, annoying edges or protrusions, the Eta Plus range are perfect for applications in clean area industries.

The smooth housing surface without any troublesome edges and the IP protection class, make it difficult for dirt and bacteria to build up. As a result, the energy-saving motors can easily be cleaned with the rest of the equipment. The three-phase asynchronous motors provide the ideal solutions in all application areas where cleaning is done using water and detergents. This applies to all Clean Industries: beverages, bio-chemicals, pharmaceuticals, cosmetics, photo-voltaic, electronics, medical, and are suitable for use in applications with stringent hygiene and cleanliness requirements.


WEG motors are manufactured and tested according to the VDE 0530 Part 1 standard. This corresponds to the European standard EN 60034-1 and the international standard IEC 60034-1.

For more information please contact us.