High Voltage Services

High Voltage Services

HV Maintenance

• Transformers
• Protection relays of all generations
• High voltage and low voltage switchgear
• Circuit breakers
• Switch yards
• Thermographic imaging
• Oil sampling

Cable Jointing

We provide our clients with specialist cable jointing and switchgear installation solutions.

• LV & HV switchgear installation
• Cable jointing and terminations of XLPE, EPR rubber and Triplex cable
• Transformer and pole top terminations

HV Testing

• Current transformer and voltage transformer testing
• contact resistance testing
• primary and secondary injection testing
• VLF testing
• transformer and switchgear oil sampling and testing
• turns ratio testing
• impedance
• tan delta
• vector testing
• SFRA
• partial discharge
• transformer condition monitoring
• HiPot testing (Voltage withstand testing)
• High voltage switching

HV Construction

• substation construction
• indoor chamber substation construction
• HV circuit breaker installation and assembly
• HV ring main units
• transformer installation and assembly

Level 2 ASP

Kenshaw Electrical are specialised Level 2 ASP Electricians. We are accredited to undertake ASP works on Ausgrid and Essential Energy networks.

• Disconnect/reconnect
• underground services
• overhead services
• Metering
• 24/7 emergency services
• private pole installations
• defect notice rectification
• switchboard upgrades

What is a Level 2 Electrician?

An ASP (Authorised Service Provider) is an electrician who has further training and qualifications. They are required to refresh their training every 12 months and keep up to date with changes to the NSW Service and Installation Rules.

Disconnect/Reconnect

Electricity can be extremely dangerous, so to ensure your safety and the safety of workers on your property, you may need to disconnect your electrical supply for a short duration while undertaking work.

Temporary disconnection keeps everyone safe when working close to underground or overhead service cables and should only be requested when you will need your electricity supply to be reconnected in the near future.

Whether you are trimming trees that are growing near wires or poles, moving or upgrading your meter box, repairing overhead or underground cables or installing a power pole on your property, it is important that you make safety your primary focus. Before working on or near any electrical equipment on your property, you will need to arrange a temporary disconnection of your power supply.

If you require the power supply to be disconnected for more than 10 days, this requires a permanent disconnection.

Class 2B – Underground Services

As Level 2 Authorised Service Providers, we are able to install and maintain underground supply cables from the electricity network to your premises.

Installation of Underground Service Mains

This involves the installation of an underground service cables that connect a customer’s premise to the electricity network.

Upgrade of Existing Underground Service

Sometimes, home or business owners may find that the power supply to their property is simply not enough. This service involves upgrading a service cable from single phase to 3 phase for a larger power supply.

Permanent Disconnections

During demolition or renovation projects, power supply will need to be removed completely to a property to ensure the safety of workers.

Temporary Builders Supply

We can provide temporary power to a builder’s switchboard during construction work on a property. This enables all contracting trades to continue to work until a permanent connection can be made.

Underground to Overhead Connections (UGOH)

This type of connection involves installing underground cables from the main switchboard direct to the network pole and making a connection to the overhead electrical network.

Class 2C – Overhead Services

Installation of new overhead service mains

This involves installing an overhead cable from the network electricity pole to the Point of Attachment on the front of your premises. Generally, the main reason for a new overhead supply is upgrading from single phase to 3 phase to meet your electrical load requirements, or replacing old and damaged cables.

Permanent Disconnections

During demolition or renovation projects, power supply will need to be removed completely to a property to ensure the safety of workers.

Disconnection And Reconnection

Disconnection & Reconnection your overhead service at the network pole or at point of attachment. Generally, disconnection and reconnections are required when you are having work undertaken on your meter board or your consumer mains (the cables from the point of attachment on the front of your property, to your meter board). In some cases, you may require disconnection/reconnection if you’re having building works completed on your roof or during renovations.

Please note, if you require the power supply to be disconnected for more than 10 days, this requires a permanent disconnection.

Barge Board Replacements

A barge board is a timber block mounted at the front of a property where your overhead service attaches to. These timber blocks can fail overtime due to timber rot.

Temporary Builders Supply

We can provide temporary power to a builder’s switchboard during construction work on a property. This enables all contracting trades to continue to work until a permanent connection can be made.

Barge Fuse Replacements

Ceramic barge fuses are mounted at the point of attachment of your property. These fuses are installed between the power service line and the customers consumers mains. Fuses are installed to protect the consumer mains from power overloads and fire hazards. Over time, the electrical contact between the fuse and fuse holder can become weak. This creates a ‘hot joint’, where there is small arcing between the two surfaces which heats up and ultimately fails.

Installation of Private Poles

Private poles can be installed for many reasons. You may want to make your property more appealing and eliminate the Point of Attachment from the fascia. Private poles are also installed to gain height across a roadway to meet the minimum height requirements for vehicles. You may also need to install a private pole to rectify encroachment issues of your neighbour’s boundary. NSW Service and Installation Rules state that your overhead service cable may not cross neighbouring boundaries.

Private Pole Services

Private poles can be installed for many reasons. You may want to make your property more appealing and eliminate the Point of Attachment from the front of your house or you may need a private pole installed to gain height across a roadway to meet the minimum height requirements. You may also need to have a private pole to rectify encroachment issues of your neighbour’s boundary.

Treated Hardwood Timber

Although this option is higher in cost, timber poles usually has a lifespan of 30+ years. Although these poles have a long lifespan, they are susceptible to rotting when installed in areas with a high moisture content or are also prone to damage from termites.

Galvanised Steel

This version has a lifespan of around 15-20 years, is more cost effective, and also has its wiring ran within the pole. Steel options are more aesthetically pleasing for customers – they can even be painted to fit in with their surrounding environment! However, they do need to be inspected regularly as they are prone to rust at ground height. Height clearance can also be difficult to obtain for steel variants, so they may not always be an option suited to what you need. It is a cost-effective option with a shorter life span.

Titan Poles

These poles are rust, rot, termite and bushfire-proof, non-conducive, lighter than wood or concrete, plus they come with a lifetime warranty. Available in sizes from 7.2m-12.5m as a single piece and 14-23m as two pieces. They can be easily cut down to length and also have a hollow structure which allows for cables to be run internally providing safety and security throughout your installation. Additionally, an RFID (Radio Frequency Identification Device) is embedded in the pole during production for easier identification and maintenance. Titan systems are also UV proof, have the lowest carbon footprint and are most suitable for marine applications or saline ground conditions.

What is a Defect Notice?

A defect notice means that a part of the electricity supply to the property has become defective and requires attention to have it rectified by an electrical contractor. All connections to Ausgrid’s electricity network must comply with safety standards, including the NSW Electricity Supply Act 1995, the Electricity (Consumer Safety) Regulation 2006 and Ausgrid’s Network Standards.

Kenshaw Electrical are authorised to repair electrical installations that do not comply with safety standards and are subject to defect notices by Ausgrid. As the property owner, you are responsible for the maintenance and upkeep of all privately-owned power poles and powerlines, which is from the first point of connection on your property to the switchboard or meter board.

Defect notices are issued for faulty wiring, modifications to the original connection, trees and branches growing too close to electrical wires, rusty or broken brackets, damaged Point of Attachments, loose connection boxes, rotten fascia boards, outdated switchboards, UV-damaged mains, attachment issues and low-running overhead service cables.
Any defects that are not repaired within 21 days after notification may result in electricity supply to the property being disconnected until repairs are completed to Ausgrid’s safety and service standards.

Onsite Electrical Services

• Electric motor and Generator maintenance and breakdown services
• Motor control and protection systems
• Engineering and Design
• VF Drives
• Testing / Condition Monitoring
• Electrical Plant maintenance full time onsite and shift cover
• Generator Installations
• UPS installation and maintenance
• PFC Sales, servicing, and testing
• Emergency Power installations