The requirements for DC overcurrent protection seem to have changed a lot in the AS/NZS 5033:2021 update upon first glance. But most of these changes are just rearrangement and new notation. This article will explain the old and new requirements. Skip to: AS/NZS 5033:2014 requirements AS/NZS 5033:2021 requirements Comparison of AS/NZS 5033:2014 and AS/NZS 5033:2021 […]
Category: Technical Articles
To maintain our position as the preferred knowledge network for the industry and commerce of renewable energy innovation & technology, GSES communicates factual, up-to-date and evidence based information for publication. These include information on the issues surrounding DC circuit breakers, earthing fundamentals, how to sell solar, and information on isolator enclosures.
How To Use Chapters 5 And 5A From NER For Large Scale Embedded Generators
This article outlines the scopes of Chapter 5A, defines the systems it applies to, and provides a brief introduction to what you can expect should you start your connection application.
Deep dive on the new AS/NZS 5033:2021 Updates
AS/NZS 5033:2021 Update – What You Need to Know As part of the solar industry, you’re probably accustomed to the 2014 version of the standard, which had two amendments published in 2018. In November 2021, this standard was updated to reflect the rapid growth of this industry and provide updated safety practices. Knowledge is power, […]
Vehicle To Grid Implications In Australia
Vehicle To Grid Australia What is Vehicle-to-Grid? Electric vehicles (EVs) are becoming increasingly popular and it is forecasted that by 2030, one third of cars sold will be electric [1]. This increase in electric vehicles poses a challenge to the National Energy Market (NEM) on how to best manage the charging of these EVs without […]
AS/NZS 4777.2 2020 Updates – What You Need to Know
The 2020 updates to the inverter Standard AS/NZS 4777.2 Grid connection of energy systems via inverters, Part 2: Inverter Requirements is now available. If you’re a solar professional, you’re probably familiar with the 2015 version of the Standard. In December 2020, the Standard was updated to reflect changing conditions in the industry. These changes could […]
How do half-cut solar cells work while shaded? New Video!
Watch this short video to learn!
Specialised Cable Sizing of Complex Electrical Circuits
Cable sizing and derating are critical elements in any electrical project, not just solar power installations. Most electricians rely on Australian/New Zealand Standards AS/NZS 3008.1.1 and AS/NZS 3000 to provide the answers necessary to adequately size and derate cables for a given load in any situation. In some scenarios, a specific site or installation may […]
DC Cable Sizing using AS/NZS 3008; and Limitations
This article will give you an overview and examples of DC cable sizing using the standard AS/NZS 3008. Cable sizing is one of the most crucial engineering problems in PV system design. It has major implications on the overall cost, performance, and safety in design of PV systems. Correct cable selection also ensures compliance with Australian […]
Why do we need to derate electrical cables?
This article will look at the physics behind why it is necessary to derate electrical cables. It is the first in a series of articles covering cable sizing and deratings, so stay tuned for more on different methods to derate cables safely while maintaining cost effectiveness. Cable selection is one of the most crucial engineering problems […]
Implementing Virtual Power Plants (VPP) in Australia
Virtual power plants (VPP) have the potential to make the grid infrastructure more resilient in Australia. Currently, VPPs can reduce the pressure on the grid during times of high demand. It does this by linking small-scale independent decentralised generators like PV systems and batteries into a network, with communication and controls to allow the units […]