Eccentricity

A few 3.3kV terminations last week. ⚡️

Many people underestimate the importance of choosing the correct stress control in high harmonic installations. Here partial discharge was found on some terminations resulting from high levels of harmonic distortion and voltage stressors not being contained within a cable termination. When installations have high levels of harmonic distortion, geometric stress control options are always the best choice. If you need a contractor who knows the difference. Give us a call!

Some annual maintenance and testing last week on some power generator transformers. ⚡️

Why you should perform condition assessments on your HV Cables

When we get calls from clients regarding cable failures there is a general theme that occurs time and time again. “We didn’t realise the cable was in such bad condition” they would say after seeing the destruction caused by the failure.

High voltage cables are a common and frequent cause of outages, but how can you determine if they are in good working order?

Our latest article discusses the high-performance characteristics of healthy cabling and testing techniques useful in determining the quality of your HV cabling.

https://www.eccentricity.com.au/hv-high-voltage/why-you-should-perform-condition-assessments-on-your-hv-cables/

We have come to the completion of our Gold Coast project where we were engaged to complete cable terminations, cable testing, transformer commissioning, earth grid commissioning and protection relay commissioning. Was an excellent project to be a part of and thank you to everyone involved for a top effort resulting in a successful project.

Here we are performing a new RMU installation and pad-mount transformer in Logan last week. The works consisted of transformer commissioning, RMU commissioning, earth grid verification testing and cable terminations. Meant for a busy week for our team battling storms and hot weather but we managed to stay on top of our schedule and get the client up and running over a 14hr shutdown. ⚡️

Busy week in the heat last week assisting with some transformer repairs. Found some high resistance and worn contacts on a the offline tap changing mechanism and replaced some LV bushings before returning to service. Oil was also heated and filtered.

First job off the ranks for the 2023 year was a couple of flexible 11kV EPR trailing cables for a mining skid with an RMU.

The last of the terminations and some HV cable testing to complete our project down south.

Servicing and overhauling a 690/11,000V transformer last week. Fixed several leaking bushings and found a high contact resistance on the tap changer. People think power transformers require no maintenance as they have no moving parts however the opposite is true. Yearly inspections and testing can significantly improve their lifespan. If your power transformers are overdue for their maintenance, feel free to reach out and contact us.

How to Locate Sheath Faults on MV Cables

Maintaining healthy sheath insulation is extremely important for the safe operation and lifespan of an MV cable. If there are faults in the outer sheath you can expect ingress of moisture, debris, and premature degradation of the cables structure.

Our latest article highlights a real world sheath fault and how we were able to utilise specific test equipment enabling us to locate the fault very easily and accurately.

https://www.eccentricity.com.au/technical/how-to-locate-sheath-faults-on-mv-cables/

How to Locate Sheath Faults on MV Cables • Eccentricity Maintaining healthy sheath insulation is extremely important for the safe operation and lifespan of an MV cable. If there are faults in the outer sheath, you can expect an ingress of moisture, debris, and the premature degradation of the cables structure.

Spent a week completing some 22kV terminations in NSW last week. Some cold mornings and less than desirable weather, but that didn’t stop us getting the job done.

𝗛𝗼𝘄 𝘁𝗼 𝗔𝗰𝗰𝗲𝘀𝘀 𝗛𝗶𝗴𝗵 𝗩𝗼𝗹𝘁𝗮𝗴𝗲 𝗘𝗾𝘂𝗶𝗽𝗺𝗲𝗻𝘁 𝗦𝗮𝗳𝗲𝗹𝘆?

High voltage electrical systems can be extremely dangerous if you do not know what you're doing. Generally, high voltages are only seen in utility services, mining operations, and large industrial processing plants and therefore the dangers are not as well known as you may think.

Our latest article highlights the importance for all workers, not just electrical workers to understand the safety of working in and around high voltage areas.

https://www.eccentricity.com.au/hv-high-voltage/how-to-access-high-voltage-equipment-safely/

Oil Sampling & DGA Analysis of Power Transformers

Power transformers are one of the most important pieces of equipment when it comes to electrical distribution. They are responsible for the transformation of higher voltages from distribution to lower voltages as seen in everyday electrical equipment. In our latest article, we talk about the relationship between the common Oil filled Transformer Sampling, DGA Analysis and the importance of a healthy transformer in relation to the reliability of their power systems.

https://www.eccentricity.com.au/blog/oil-sampling-dga-analysis-of-power-transformers/

We completed some De-energized maintenance and testing for a client on their main incoming air circuit breaker last week. We recommend yearly testing and inspections on your critical assets to ensure the safety and reliability of your electrical system is maintained all year round.

Some 20kV circuit breaker inspections last week requiring a capacitor change out. Nice and tidy piece of equipment was a pleasure to work on.

A temporary joint with some terminations and testing for a client on the Gold Coast. The ring feed is now ready to re-energize as we await parts for the permanent joint in the coming weeks.

The Basics of LV Circuit Breaker Maintenance

In our latest article, we talk about the importance of understanding the construction and importance of the humble circuit breaker as they are used in nearly every installation from domestic buildings to high voltage electrical utility substations.

They are heavily relied upon to protect our electrical systems when abnormal circumstances arise. With varying shapes, styles, and sizes it is important to understand the correct methods for maintaining this equipment to ensure the safety of people and your assets is not at risk.

https://www.eccentricity.com.au/technical/the-basics-of-lv-circuit-breaker-maintenance/

The Basics of LV Circuit Breaker Maintenance • Eccentricity Understanding the construction and operation of the circuit breaker is incredibly important, as they are used in nearly every installation from domestic buildings to high voltage electrical utility substations.

We’ve had a busy week with some emergency works for a client in Woolloongabba. Some partial discharge and corona inside some cable boxes required us to replace 4 x main PILC cables on some critical 11kV feeders. Some in-line joints and new terminations to a TR/XLPE cable has sorted the issue relieving some stress for the client.

What is the purpose of the screen and Semi-conductive layer on MV Cables?

In most modern Medium Voltage cables, especially underground, cables are shielded, or screened with an earthing conductor. The screen consists of lapped copper tape or metallic foil usually less than 1mm thickness which is the interface between the conductor and the insulation (PVC, XLPE)

In our latest article we discuss the main purpose of this conductive screen and the technical specifics behind it. Find out more by checking out our latest article right on our website:

https://www.eccentricity.com.au/technical/the-purpose-of-the-screen-and-semi-conductive-layer-on-mv-cables/

Some more cable 11kV cable terminations and testing last week.

Installing the 11kV cabling on these 12 x 415V generators with Step up transformers for power generation for a client in Ravenswood QLD. Busy week but we were able to finish all terminations and testing successfully.

𝐇𝐨𝐰 𝐏𝐨𝐰𝐞𝐫 𝐅𝐚𝐜𝐭𝐨𝐫 𝐂𝐨𝐫𝐫𝐞𝐜𝐭𝐢𝐨𝐧 𝐂𝐚𝐧 𝐒𝐚𝐯𝐞 𝐘𝐨𝐮𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐌𝐨𝐧𝐞𝐲

Power factor correction (PFC) is an often-overlooked component in large electrical installations. It measures how effectively your business uses power. With the majority of businesses within heavy industry having large power costs, our article will show you how you can minimise these costs while increasing the efficiency of your electrical installation. Find out how right here:

https://www.eccentricity.com.au/technical/how-power-factor-correction-can-save-your-business-money/

A busy first half of the week on a customer shut down. Installing a second set of 630mm2 Cu cables to the Energex incoming feeder and a new 240mm2 Cu feed to a new Schnieder RMU.

𝗪𝗵𝘆 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗘𝗹𝗲𝗰𝘁𝗿𝗶𝗰𝗮𝗹 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 𝗖𝗮𝗻 𝗦𝗮𝘃𝗲 𝘆𝗼𝘂 𝗠𝗼𝗻𝗲𝘆

Unexpected downtime can be an expensive. When an electrical fault occurs, it occurs rapidly, often resulting in major damage to electrical assets. This leaves your business inoperable and vulnerable to the costs associated with downtime and loss of production. By integrating an effective electrical maintenance program, you can ensure unexpected downtime does not happen.

Checkout out our latest industry article right here: https://www.eccentricity.com.au/hv-high-voltage/why-effective-electrical-maintenance-can-save-you-money/

Workplace Health and Safety Queensland

Why Effective Electrical Maintenance Can Save you Money • Eccentricity Unexpected downtime can be an expensive. When an electrical fault occurs, it occurs rapidly, often resulting in major damage to electrical assets. This leaves

Here we are performing some thermal scanning on some electrical equipment for a client. Thermal scanning is extremely effective at detecting electrical faults early, presenting opportunities for rectification works before failure occurs. If you would like to know more visit our website for more information. https://www.eccentricity.com.au/services/thermography/

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Installed a new Power Factor Correction unit for a client in Ormeau this week. Power Factor Correction is a great way to save you money in your power bills. Give us a call today to find out how we can help save you money!

Out with the old and in with the new. 4/5 transformer replacements now completed on our job on the Gold Coast

𝗛𝗼𝘄 𝘁𝗼 𝗣𝗿𝗼𝘁𝗲𝗰𝘁 𝗛𝗩 𝗨𝗻𝗱𝗲𝗿𝗴𝗿𝗼𝘂𝗻𝗱 𝗖𝗮𝗯𝗹𝗲𝘀

Underground high voltage cables are a great innovation to the electrical distribution industry. While they make an installation look more visually pleasing than the overhead systems currently being utilized, they are often exposed to scenarios which are overlooked by electrical designers and engineers. You can find out more by checking our latest article here: https://www.eccentricity.com.au/hv-high-voltage/how-to-protect-hv-underground-cables/

How to Protect HV Underground Cables • Eccentricity Underground high voltage cables are a great innovation to the electrical distribution industry. While they make an installation look more visually pleasing

Attended a cable fault for a customer on the Gold Coast after the extreme weather event. A new cable was re-routed to some new switchgear to get the client back online.