Electrical Power Infrastructure
Our engineers have extensive experience in the design and construction of distribution systems
From initial design to final commissioning and testing, Powersytems offer the complete electrical distribution package. Our engineers have extensive experience in the design and construction of distribution systems from 415V up to 33kV, and this together with the knowledge of the industry ensures a solution to meet any challenge.
We provide a total electrical distribution service:
All drawings are produced on CAD packages and issued for approval prior to construction. As part of the electrical design Powersystems are able to carry out protection grading exercises, system fault level calculations, cable sizing, earthing designs, load flow and stability studies all by our in-house specialists.
Electricity substations are regularly installed across all the voltage ranges from 415v to 132kV with each substation tailored to the requirements of the site with switchgear, transformers and protection schemes selected to provide the right engineering and commercial solution.
Transformers can be supplied as free standing units or have an 11kV ring main unit or circuit breaker mounted directly onto the HV bushings. On the LV side, fused or ACB distribution cabinets can be supplied tailoring the transformer package to the individual site requirement.
At primary voltages above 11kV Powersystems can supply and install power transformers at voltage levels up to 132kV for ratings between 5 and 160MVA.
On many sites switchgear is reaching the end of its design life and Powersystems prides itself in being able to offer replacement solutions to minimise the site shutdown period.
Using our specialist cable installation teams we are able offer the complete range of cabling solutions from control and auxiliary cables, low voltage power and high voltage power cabling. Each team is fully equipped with cable winches, cable drum jacks, rollers and drum trailers to enable any installation to be completed smoothly and efficiently.
With the combination of traditional skills and modern techniques Powersystems HV cable jointers have the training and experience to joint and terminate all types of cable whether a new installation of XLPE cable or existing paper lead or PICAS cables.
We have experience across a wide range of products and regularly install terminations and joints produced by Tyco, Pfisterer, Euromold, Coopers, Prysmian & 3M.
- Over current and earth fault
- Unit protection of cables, busbars & transformers
- Trip circuit supervision
- G59/G75 Protection
- Auto reclosure
- Inter tripping
- Blocking and back tripping
Powersystems testing capability covers an extensive range of disciplines.
- 1kV and 5kV insulation tests
- DC pressure tests up to 33kV
- VLF cable testing
- HV & LV winding insulation tests
- Winding ratio checks
- Bucholz testing
- Oil sample and testing (electrical breakdown, acidity, water & PCB content, dissolved gas analysis)
- AC pressure testing
- Ductor testing
- CT’s – Ratio & flick tests, mag curves
- VT’s – Ratio & polarity checks
- Functionality checks
- Protection testing
- Primary and secondary injection
- Timing tests
- Overcurrent and earth fault relays
- Directional overcurrent and earth fault relays
- Differential transformer protection
- Translay and Solkor feeder unit protection
- Restricted and standby earth fault relays
- Generator loss of mains and G59 protection
- Neutral voltage displacement
- Transformer auto tapping relays
- Inter tripping schemes.
- Soil resistivity measurements
- Final earth electrode resistance
Underground fault location
- Digital pulse echo
Our team of engineers has the necessary industry skills and experience to allow us to deliver electrical power projects whether it’s a simple low voltage upgrade or a grid substation. In each case we provide our clients with technically and commercially well managed projects, with the client’s satisfaction at the forefront of our decision making.
With new grid connection projects we can manage the entire process from point of connection application, connection design, procurement, installation, testing, commissioning and handover. In each case Powersystems engineers manage and liaise with all stakeholders to provide a successful project conclusion.
From simple cabling installations, transformer and switchgear replacements through to complete substation design and build contracts Powersystems can provide the services you require either individually or as a total turnkey solution. With each project supervised by a dedicated engineer, knowing the abilities of his team and experienced in the area of work, quality will be at an optimum. This is the advantage that you gain when you employ Powersystems.