NewElec's N Series motor protection relays offer the user a choice of protection features, mounting options, and a choice of appropriate motor thermal curves with five models to choose from. When used with their own integrated current transformers, which incorporate an earth leakage core balance C.T. in the same housing, and the inclusion of a 4 to 20 mA loop for monitoring motor loads, significant space and cost savings are achieved.
The relays are reliable and provide overload protection with user-adjustable cold and hot thermal curves linked to a comprehensive thermal memory. The user has the ability of selecting the appropriate thermal curve for the power rating of the protected motor. This allows the motor to work hard but within its designed thermal envelope. Excessive jogging of the motor will not be tolerated, and the cooling time after an overload trip is never compromised.
Earth leakage protection with a 250 mA sensitivity and a 100 ms trip delay including harmonic filtering enables D.O.L. starting of high-powered motors without accompanied nuisance trips on start up. These relays also recognise the potential danger of opening the main contactor on potentially high-energy faults and provide co-ordination so that either the trip is blocked if the earth fault current exceeds a safe level, or use is made of a dedicated earth fault trip contact designed to operate the back-up circuit breaker on detection of such faults.
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Motion Control & Drives
Osterwalder Technology has launched the MPneo 480, a 480 kN fully electric multi-plate powder press with up to six cross-pressing modules. Designed for hard metals, ceramics and advanced engineered materials, the press supports complex geometries and offers optional
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KHK USA has announced its ground helical rack series, engineered for smooth operation, high torque transmission and long-lasting performance in precision motion systems. The racks are designed for demanding environments such as machine tools, high-speed automation equipment and precision positioning systems.
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SpinDrive has launched the Magma X100, a new active magnetic bearing controller platform for applications up to 150 kW. The platform brings oil-free, frictionless bearing technology to mobile machinery, semiconductor equipment and other high-speed rotating equipment at a cost comparable to conventional bearing solutions.
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SKF Cooper sealed split spherical roller bearings combine a split design with premium engineering to enable rapid installation and simplified maintenance, reducing mean time to repair by up to 70% and keeping operations running in sectors from mining to food and beverage.
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Motion Control & Drives
Construction of the Giant Magellan Telescope, set to become the world’s largest Gregorian optical infrared telescope, is well underway. While its scientific mission is to transform astronomy, its performance depends heavily on advanced mechanical, hydraulic and pneumatic engineering.
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Motion Control & Drives
Rockwell Automation’s PowerFlex 755TS variable frequency drives are delivering energy reductions of 10 to 30% in Africa’s industrial operations, with adaptive control and predictive maintenance features that cut downtime by up to 50%.
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Motion Control & Drives
As automation spreads deeper into processing, handling and transport operations, motors are increasingly required to operate in spaces that sit on the edge of hazardous zones.
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No turbine is immune from wear and tear. Unexpected downtime or poor performance can quickly degrade its value and lifespan, but strategically maintained turbines can deliver decades of performance.
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