Rotating machines are particularly vulnerable to incorrect phase sequence. Three-phase motors can rotate in the wrong direction, potentially leading to physical damage or the risk of injury to personnel, yet voltage and current readings may appear normal.
It is often important to ensure that machinery does not rotate in the incorrect direction, and the inclusion of phase rotation protection within a motor protection relay makes good sense. NewElec offers a range of motor protection relays that offer this protection by measuring the incoming phase voltage and making it impossible to start the motor should the incoming phases be reversed.
Some NewElec motor protection relays do, however, permit software settings that allow the motor to start by reversing the phase measurement settings. This enhancement avoids the need for an electrician to physically reverse the phase measurement inputs of the relay.
Compact, high density power protection system for AI, data centre and large-scale electrical workloads Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric has launched its new Galaxy VXL – a highly efficient, compact, modular, scalable and redundant 500-1250 kW (400 V) 3-phase uninterruptible power supply (UPS), complete with enhanced cybersecurity, software and safety features.
Read more...Taking the pain out of panel building Omron Electronics
Electrical Power & Protection
Panel building stands as a cornerstone of industrial automation, shaping the efficiency and reliability of automated systems across different and diverse industries, from manufacturing to infrastructure. Omron leverages over 80 years of experience to furnish OEMs and builders with cutting-edge control panel solutions.
Read more...Powerless is not an option
Electrical Power & Protection
When the power goes out it is important for commercial and tertiary facilities to be able to keep essential electrical equipment running. UPS systems are critical for transitioning and emergency backup power.
Read more...Securing the power supply
Electrical Power & Protection
Grid management systems are the linchpin of modern transmission and distribution networks. To understand the intricacies of grid management, it is necessary to unpack its core components: scada systems, energy management systems, outage management systems and wide area management systems.
Read more...Powering sustainable mining operations in Africa
Electrical Power & Protection
Africa’s mining sector is at a crossroads and, as the industry grapples with mounting pressure to drive operational efficiency within the boundaries of sustainability, natural gas is emerging as a compelling solution.
Read more...Multimeters: the perfect entry-level choice Comtest
Electrical Power & Protection
Experience the precision, durability and safety of professional-grade test tools with the entry level Fluke 15B+ and 17B+ digital multimeters.
Read more...ABB technology powers three substations in Uganda ABB South Africa
Electrical Power & Protection
ABB delivered solutions for three substations run by Uganda’s leading utility, Umeme Limited, which manages and operates the state-owned leased electricity distribution network assets.
Read more...A snapshot of South Africa’s electricity market over the next six years
Electrical Power & Protection
At the beginning of the year, the Electricity Regulation Amendment Act came into effect, promising to facilitate “an open market platform that allows for competitive electricity trading.” This article focuses on providing a roadmap for the competitive, multi-market electricity trading platform that the ERAA intends to establish.
Read more...Empowering businesses to prosper as prosumers Schneider Electric South Africa
Electrical Power & Protection
As more businesses adopt renewable energy solutions like rooftop solar and energy storage they become prosumers – both consumers and producers of energy – a trend that presents organisations with a significant opportunity to engage in the bi-directional flow of energy through distributed energy resources.
printer friendly version