Fault types: Open-Circuit and Short-Circuit
Fault types, specifically open-circuit and short-circuit faults, are crucial in understanding electrical issues in power systems. An open-circuit fault occurs when there is a break or disconnection in the electrical path, making it impossible for current to flow through the intended circuit. A short-circuit...
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Surge Diverters in LV Applications – Lightning Arresters
Surge diverters, or surge protection devices (SPDs), are intended to protect electrical systems from surges by safely diverting them to earth. Under normal conditions, these devices are dormant, acting as high-impedance components that do not affect the electrical system in any way. When a...
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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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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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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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Understanding Forms Of Segregation In Switchboards
Imagine this, an engineer is working on switchboard maintenance, and accidentally, he touches a live part. Well, in such a scenario, we can experience the worst condition — maybe even the loss of life. This can be prevented with the help of Forms of...
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AS/NZS 60529 – The Standard for Enclosure IP Rating
The full title of the standard is “Degrees of protection provided by enclosures (IP Code)”. It’s the Australian and New Zealand adoption of the international IEC 60529 standard, which defines a classification system for how enclosures protect electrical and electronic equipment. The standard sets...
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How does a 3-phase distribution board work?
A distribution board (often called a switchboard or panelboard) is an assembly that receives power from the main supply and distributes it to subsidiary circuits. It also provides protection against overloads, short circuits, and earth faults using circuit breakers and protective devices. A 3-phase...
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