AS3000 Electrical Room Requirements
Metroid provides AS3000 Electrical Switchrooms. Proper design and layout of electrical rooms and switchboard spaces are essential for safety, access, and ongoing maintenance.
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2025 Grants for Waste Water Projects
2025 Grants for waste water projects, recycling, renewables and more across Australia are part of the national funding opportunities.
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What’s the difference between DOL start, star-delta, soft starter and a variable speed drive?
DOL starting, Star-delta starting, Soft starting, Variable speed drives. It’s important to select the best starting method to achieve a functional yet cost-effective control system
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What’s the difference between a digital and analog signal?
Always wondered what the difference is between a digital and analog signal? A digital signal is very simple – it’s either on or off.
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Remote Access – you’re wasting time and money without it
With a remote access gateway fitted to a compatible PLC/HMI control system, you can not only view and control your system from anywhere, but tweaks and changes to the PLC and HMI software can be remotely uploaded and tested.
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What does IP Rating mean again?
Ever wondered what IP54 means, and how it differs from IP66? Read on for a crash course on the varying types of IP ratings and how it will effect you switchboard
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How To Cut Costs On Your Electrical Scope
Are you frustrated by rising electrical costs as a proportion of total project cost? Here are a few things that can reduce your costs on your Electrical Scope.
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Hazardous area ratings for electrical controls
Some industrial process environments carry a risk of fire or explosion due to the presence of flammable gas, vapour or dust; these are known as hazardous area ratings.
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Analog signal types: 0-10V versus 4-20mA
The two most common analog signal types in modern industrial automation are 4-20mA and 0-10V. Let’s take a look at the difference between the two and which one you should choose.
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Thermal overload relays & motor protection circuit breakers
What’s the difference between thermal overload relays & motor protection circuit breakers? What’s an electronic motor protection relay? Read on to find out more.
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Switchboards – Fatal electric shock: what voltage causes death?
How much current does it take to kill someone? A current of as little as 0.007 amps (7mA) across the heart for three seconds is enough to have a Fatal Electric Shock
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What is Harmonic Filtering?
To understand the purpose of harmonic filtering, it helps to understand what harmonics are.
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How to calculate voltage drop
Voltage drop is the known phenomenon where the voltage at the end of a run of cable is lower than at the start. Here's how to calculate in your switchboard
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Understanding Forms of Segregation
Form 3b? Form 4aih? Ever wondered what your consultant is referring to when they talk about forms of segregation and don’t want to look stupid?
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Earth leakage protection and the difference between an RCD and an RCBO
Earth leakage protection is a technology which works by monitoring the current flowing through the conductors.
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PLC versus PC based controls
PC control systems tend to be more flexible and powerful than a PLC system, and are particularly effective when interfacing with existing PC-based infrastructure such as databases and company ERP systems.
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What is shielded cable and why use it?
What is a shielded cable? A shielded cable is an electrical cable which features an outside layer or ‘shield’ of conductive material around the internal conductors, which is connected to earth.
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The difference between Type 1 and Type 2 Coordination
Type 1 and Type 2 coordination is a definition that applies to motor starters, set out in the IEC standard 60947-4-1.
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How to use a multimeter
A multimeter can be an intimidating piece of a equipment to the uninitiated. But it’s not as difficult to use as it looks – here’s some simple steps to follow for most common situations.
Read articleSurge protection – when should I use it?
Surge protection is the protection of electrical equipment from dangerously high voltage spikes or surges. The most common cause of voltage surges is lightning strikes.
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The dangers of imported controls
Design and construction of LV Switchboards and Switchrooms for critical infrastructure projects.
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Remote radio links
Some situations may be impractical to run a physical cable between an instrument and the control system due to distance or existing infrastructure. In these cases remote radio links can be used.
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Fibre versus copper over long distances
There are two main advantages of fibre versus copper cables: higher bandwidth and greater signal carrying distance.
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Should I separate power distribution from control?
It’s relatively common in low voltage industrial controls to physically separate power distribution from control equipment, whether it’s via separate cubicles or just physical separation (known as segregation).
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What is power factor correction?
Power factor correction is essentially a measure of the proportion of power an electrical load can actually put to use.
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Control Methods: PLC vs Relay Logic
Let’s take a look at some of the advantages and disadvantages of PLC controls vs relay logic.
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VSD, VFD, VVVF? What’s The Difference?
One of the more common confusions is the VSD/VFD/VVVF question. What is the difference between a VSD, a VFD and a VVVF? Or are they all the same thing?
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XLPE? SDI? Untangling those cable acronyms
Here’s a brief overview of some of the most common cable acronyms and what they refer to.
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What is a soft starter?
A soft starter is an electronic device which controls the acceleration of an electric motor.
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Mounting VSD’s inside or outside a switchboard
There’s a huge range of drives available for a myriad of applications including IP20 models for mounting VSD’s inside a switchboard and IP54/66 models for mounting externally.
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Protocol Series: What is Profinet?
We’re talking about a communications protocol, which is a common ‘language’ which allows connected devices to ‘talk’ to and understand each other. An
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Protocol Series: What is Profibus?
We’re talking about a communications protocol, which is a common ‘language’ which allows connected devices to ‘talk’ to and understand each other. An
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Protocol Series: What is Lonworks?
We’re talking about a communications protocol, which is a common ‘language’ which allows connected devices to ‘talk’ to and understand each other. A building
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Protocol Series: What is BACnet?
BACnet (Building Automation and Control NETworks) is a network communications protocol commonly used in building automation and building management systems.
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Protocol Series: What is Ethernet/IP?
We’re talking about a communications protocol, which is a common ‘language’ which allows connected devices to ‘talk’ to and understand each other. An
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Protocol Series: What is Modbus?
Modbus is a common network communications protocol used in industrial control systems. There are two common variants of Modbus: Modbus TCP and Modbus RTU.
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VSDs and IP ratings: what are the trade-offs?
The use of variable speed drives (VSDs) for controlling motors is becoming more common, particularly because of their ability to generate energy savings
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