Surge Diverters for Medium & High-Voltage Applications
The surge diverter is a protective device that protects the system by limiting transient overvoltages through the diversion of surge energy into the earth. Under normal operating conditions, the surge diverter is not electrically involved and has extremely high impedance. However, when a transient...
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Large Circuit Breakers – MCCB, ACB, VCB
The Molded Case Circuit Breaker, or MCCB, is a very popular variety of high-capacity low-voltage circuit breakers. It is a compact device intended for the protection of circuits that conduct moderate to heavy currents. All current-carrying parts and protection functions of the MCCB are...
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Comparing Star-Delta Starters, Soft Starters, and VSDs
The star delta starter is one of the oldest techniques used for starting a three-phase induction motor. During the initial starting process, the windings of the motor are connected in a star configuration. This causes the voltage applied to the windings to be reduced...
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What is Power Quality Analysis? Key Aspects & Benefits Overview
Power quality analysis is a systematic investigation of electrical supply and load behaviour to identify deviations from ideal performance, quantify them, and determine their causes and impacts. This entails the measurement, recording, analysis, and reporting of significant electrical variables over time. In Australia, there...
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Power Factor – Maximizing Electrical Efficiency
Power factor, in relation to electrical systems, defines the overall efficiency and economy of your consumed energy. From a commercial facility or industrial operation to the house owner who simply wants to know how he can make his house’s energy usage more efficient, understanding...
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Export Limit and Export Control on a Solar Installation
Export limit — the maximum power (usually given in kW) a site is allowed to put onto the distribution network. It’s normally set by the local Distribution Network Service Provider (DNSP) in the connection agreement. Export control — the technical method used on-site (inverter...
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Battery Manufacturers in Australia – Energy Renaissance & PowerPlus Energy
Australia’s effort to build a home-grown battery industry has felt like a rollercoaster: big ambitions, policy momentum, fast-growing consumer demand — and a reminder that making battery cells at scale is very hard. In this article, I’ll walk through two firms that have been...
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Discrimination & Selectivity Studies
Discrimination & Selectivity Studies What is a discrimination study? A discrimination study in an electrical system is an analysis aimed at ensuring that protective devices (such as circuit breakers, fuses, and protection relays) operate in a coordinated manner. The main objective of this engineering...
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ASP Levels for Ausgrid Connections – What does it mean?
An Accredited Service Provider (ASP) is a qualified and authorised electrical contractor that’s been approved to perform contestable works on or related to the electricity distribution network. In simple terms, contestable works are the parts of a connection project that can legally be carried...
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Single-Phase vs. Three-Phase Power: What’s the Difference?
Electricity in Australia is delivered as alternating current (AC), meaning the flow of electrons reverses direction 50 times per second — or 50 hertz (Hz). This alternating nature allows power to travel efficiently over long distances. The term “phase” describes the waveform of this...
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