Next generation WEG contactors save energy
August 2015
Electrical Power & Protection
The next generation of WEG contactors has been engineered to facilitate energy savings as well as the optimisation of space within electric panels. These environmentally friendly devices use only non-toxic and eco-friendly materials.
Designed using in-house software modelling programmes, the WEG CWB range of contactors has been engineered to accommodate surge suppressors directly in the device. This is not only a space saving feature, but also allows easy access for maintenance or replacement. Another important feature is that coil replacement can be accomplished without the need for any tools making this a simple and time saving task.
Energy savings are achieved through the low consumption of the coils used in the contactors, which also allow direct switching from PLCs without the need for interface relays. This facilitates both space and cost savings for the end-user.
Developed by WEG’s R&D department in Brazil, all devices in the WEG CWB contactor range meet the IEC 60947 and UL 508 international specifications. The range has been specifically designed to accommodate electric motors up to 18,5 kW at 380/415 VAC.
These contactors are ideal for applications where the majority of the motor starters in an electrical panel are direct online, forward reverse, or star delta. The seamless integration between the contactors, overload relays and motor protection circuit breakers allows fast and easy assembly of compact starters and protection sets for low voltage motors. These modular devices offer a wide variety of combinations allowing greater flexibility.
The WEG CWB range of contactors affords customers a high level of flexibility owing to the modular design, which is complemented by a full range of accessories including auxiliary contacts, spare coils and wiring kits.
For more information contact Kirsten Larkan, Zest WEG Group, +27 (0)11 723 6000, [email protected], www.zest.co.za
Further reading:
High-efficiency half-brick DC-DC converters
Vepac Electronics
Electrical Power & Protection
The Supreme series half-brick DC-DC converters from Vepac Electronics use synchronous rectification for high conversion efficiency, in a six-sided metal case built to withstand harsh industrial and transportation environments.
Read more...
Zinc-based batteries power a more sustainable energy future
Electrical Power & Protection
Zinc-based batteries are gaining ground as a safe, recyclable and cost-effective energy storage option, from consumer electronics to grid-scale systems. The International Zinc Association’s Simon Norton explains why zinc is well placed to support the clean energy transition.
Read more...
Energas introduces lower-cost German gas genset for South African market
Electrical Power & Protection
Energas Technologies will supply R Schmitt Enertec’s new Energy Line genset to the South African market, offering German-engineered gas-to-power generation of 400 to 500 kW at a lower entry cost through focused standardisation and a simpler standalone architecture.
Read more...
ACTOM plays key role in large transmission substation project in Swellendam
ACTOM Electrical Machines
Electrical Power & Protection
ACTOM has been appointed to engineer, procure, construct and commission the 1000 MVA main transmission substation for the Overberg Wind Farm in Swellendam, one of the largest substations of its kind in South Africa.
Read more...
Reliable power conversion from high-voltage DC buses
Conical Technologies
Electrical Power & Protection
The MEAN WELL DDRH-240 from Conical Technologies is a high-reliability DIN-rail DC-DC converter with a wide 250 to 1500 V DC input range, deriving stable low-voltage power directly from high-voltage DC buses in renewable energy, storage, charging, railway and industrial installations.
Read more...
AES maintains a strong value and safety stance on boiler retrofits
Electrical Power & Protection
AES Commercial Director Dennis Williams explains when a boiler retrofit makes more sense than replacement, outlines the range of efficiency and emissions upgrades available, and draws the line at safety: a boiler not legally signed off is shut down, no exceptions.
Read more...
The grid needs to become more intelligent
Schneider Electric South Africa
Electrical Power & Protection
South Africa’s power grid is becoming bidirectional and far more dynamic as distributed energy resources proliferate. Schneider Electric’s Nishandra Bajinath explains why digitalisation, DERMS and aggregation are essential to keep this increasingly complex grid stable and efficient.
Read more...
ACTOM’s integrated electrical solutions reduce project risk and accelerate delivery
Electrical Power & Protection
ACTOM has secured multiple orders across four divisions for the Naos-1 hybrid solar and battery project in the Free State, demonstrating its integrated model for supplying the full electrical chain from high-voltage equipment to distribution transformers.
Read more...
Smarter energy management starts with intelligent electrification
ABB South Africa ABB Electrification Products
Electrical Power & Protection
ABB Electrification specialists Adeline Maleka and Nokulunga Dube explain how the convergence of electrification, digitalisation and automation is helping South African industries gain real-time visibility, reduce energy waste and build operational resilience.
Read more...
Electricity security is a strategic imperative for Africa’s growth and industrial future
Electrical Power & Protection
Grid resilience has become as strategic a priority as generation capacity. Africa needs robust transmission and distribution networks, skilled engineers and resilient supply chains to power its energy transition.
Read more...
printer friendly version