The Zest WEG Group has introduced the WEG range of RW_E electronic motor protection overload relays to complement its range of smart relays. These are highly reliable devices intended to protect motors, controllers and branch circuit conductors against phase failures and overloads that can result in overheating. They play a vital role in overall system performance and efficiency and are designed to protect three phase and single phase AC motors.
They have increased reliability in terms of the protection of low voltage three phase motors in sinusoidal 50/60 Hz networks where reliability, low power dissipation and ease of maintenance are critical requirements. They have been developed in accordance with the IEC 60947-4-1 and UL 60947-4-1A (UL 508) international standards.
They have no power contacts and therefore cannot disconnect the motor by itself. Instead, motor overloads or phase failures increase the motor current, which in turn trips the mechanism and switches the auxiliary contacts. When wired properly in series with the coil of the contactor, these auxiliary contacts will de-energise the contactor in the event of an overload. This means the contactor itself disconnects the power supply to the motor, halting its operation. Another handy feature is that, once tripped, the relay will only reset once the motor has cooled down, preventing costly damage. The WEG RW_E electronic overload relays are temperature compensated, which means that the trip point is not affected by temperature and it performs consistently at the same current value.
Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...R200 part saves recycler millions igus
Other technologies
A simple switch to a polymer bearing, in place of stainless steel, has saved lead acid battery recycler, Frys Metals, tens of thousands of rands in maintenance costs, and much more in preventing lost production time.
Read more...Lube tip: thermal failure in lubricants WearCheck, a division of Synerlytic Services
Other technologies
One of the most common causes of thermal failure in hydraulic fluids and some lubricating oils relates to aeration.
Read more...WEG partners with Panaco in the DRC Zest WEG Group Africa
Editor's Choice News & events
The strengthened presence of WEG in the Democratic Republic of Congo (DRC), through its strategic alliance with ts value-added reseller (VAR) Panaco, has proved to be highly successful.
Read more...Superior lubrication capability
Other technologies
Superior lubrication slashes electricity consumption, reduces vibration, and increases protection through dramatically lower friction.
Read more...Approaches to wire rope lubrication
Other technologies
The approaches to wire rope lubrication have shifted in recent years, largely due to important technological advances to improve the application and performance of lubrication products for wire ropes. Locally, Lubrication Engineers has been at the forefront of these advancements.
Read more...Powering Kipushi’s new dawn Zest WEG Group Africa
Electrical switching & drive systems & components
As part of Ivanhoe Mines’ refurbishment of the historic Kipushi Zinc-Copper Mine in the Democratic Republic of Congo, Zest WEG will be supplying a range of electrical and energy solutions.
Read more...Megatrends shaping the auto industry
Other technologies
The automotive industry is in the midst of a technology-driven revolution that will not only advance the safety and sustainability of transportation, but also transform how consumers interact with their vehicles and the OEM brands behind them.