Earth fault loop impedance testing – Key concepts
Earth Fault Loop Impedance Testing is a process in which the impedance between the live conductor and the earth path in an electrical circuit is measured. Two principal tests are included: the first, namely the External Impedance Test, Ze; the second is System Loop...
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Understanding RCDs and RCBOs – Electrical Safety
The RCDs are classified depending on the kind of leakage currents they can detect. Classifications determine the device suitable for an application. Type AC RCDs are intended to detect sinusoidal residual currents and are well suited for resistive, capacitive, and inductive loads. However, they...
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Wind loading key updates as per AS/NZS 1170.2:2021
Wind loading is a critical factor in ensuring the durability and safety of PV systems on rooftops or ground mounts. Under Clause 2.2.5 of AS/NZS 5033, all rooftop PV systems must meet the requirements of AS/NZS 1170.2 to withstand site-specific wind pressure loading. While...
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How To Install Surge Protective Devices As Per AS/NZS 3000
This article gives information on how to install Surge Protective Devices (SPDs) in order to protect against transients overvoltages generated by powerline disturbances and natural phenomena such as lightning striking near exposed conductors, according to Clause 2.7.3. SPDs are not intended to protect against...
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Difference Between Cascading And Selectivity In Power System
Cascading and selectivity are two important concepts in designing power system protection and back-up. The principles of cascading and selectivity ensure systems’ reliability, protection, and cost-effectiveness while operating under a variety of fault conditions. Selectivity (Discrimination) Selectivity, or discrimination, is essential to ensure the...
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IP Ratings For Enclosures – Testing for Dust IP56 and IP66
In today’s world, different environmental conditions make many products vulnerable to certain intrusions, especially on how to deal with water and dust. Electrical enclosures, among other products, depend on IP Ratings, a standard measuring tool in determining the amount of protection an enclosure affords...
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Jemena’s Emergency Backstop For Stable Grid Integration
In modern electrical grids, having emergency response systems becomes more critical to maintain stability and ensure uninterrupted, safe operation of power supplies. For power generation facilities, especially those connected to the grid during emergency conditions, an effective emergency backstop mechanism is vital in preventing...
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V2G To Build A Smart Grid – Enhancing Energy Resilience
With V2G technology, EVs can communicate with the power grid and exchange power when needed. This adaptability greatly enhances energy resilience and decarbonization. One new smart grid technology that allows bidirectional power flow is the V2G unit, a power inverter that routes power to...
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How to Secure Engineering Internships in Australia?
Engineering internships in Australia are an excellent way for students and recent graduates to gain hands-on experience, develop professional skills, and prepare for a competitive job market. Work experience should always be relevant and meaningful to your discipline and area of study. Integrating with...
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VEECs (Victorian Energy Efficiency Certificates) Explained
The VEECs (Victorian Energy Efficiency Certificates) is a critical resource for individuals, businesses, and Accredited Providers looking to realize energy-saving opportunities and capture them through the Australian Government’s Victorian Energy Efficiency Certificates (VEECs) program. What is a VEECs? Victorian Energy Efficiency Certificates (VEECs) are...
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