CABLE PROTECTION
FEATURE SPONSOR
PREVENTIVE AND PREDICTIVE MAINTENANCE PROGRAMMES
Northern Ireland based Electrical and Mechanical Engineering Company makes a considerable investment in new and innovative testing technology. Grants Electrical Services Ltd (GES Group) aims to provide the best in preventive and predictive maintenance programmes by building powerful partnerships with their clients through investment, innovation and collaboration with their key strategic partners. Working closely with their HV cable jointing partner, Avex Cable Jointing Ltd, the company are the first in Northern Ireland to use some of the most advanced HV test systems available on the market.
VLF TESTING GES Group and Avex provide VLF testing on newly installed high voltage cables on wind turbines and solar farms using the HVA60 VLF test set - the lightest, most compact instrument of its type on the market that has the highest power to weight ratio of any comparable device.
SPECIFICATIONS The HVA60 is capable of testing capacitive loads up to 1µF (approx.10,000 ft. / 3000m of cable) at 0.1Hz and 60kV peak and the
frequency of the output can also be reduced allowing even larger capacitance loads to be tested. At 0.02Hz, approx. 50,000 ft./15,000m of cable can be tested.
INVESTMENT The recent £40,000 investment also included the purchase of the MFM10 Sheath Tester and Fault Locator. Cable sheath testing is vital in preventative maintenance of electricity supply to low and high voltage cable networks.
The MFM10 incorporates pre-location to speed-up fault location on large cable runs. An intact polymeric cable sheath is a prerequisite for the avoidance of water ingress and subsequent cable faults in low and high voltage cable networks the pre-location and pinpointing of cable sheath faults prevent ageing, faults and stresses that are a consequence of water ingress.
PARTNERSHIP BENEFITS GES Group Managing Director, David Moore, said, “In the past, prior to our partnership with Avex Cable Jointing, test procedures were systematic, timely and expensive due to the traditional methods and technology used by the industry as standard. Now we can pin-point cable failures of various categories and lengths within a few hours of arriving on site. This is a major step forward for GES and for the industry. Down-time results in major costs and losses of revenue so we are very pleased that technological investment and our partnership will play a major proactive role in preventative trend analysis to many network owners, while providing confidence that we are available to react should the unfortunate occurrence of cable failures exist.”
Grants Electrical Services Ltd
EA TECHNOLOGY UNVEILS NEW SYSTEM TO IDENTIFY PARTIAL DISCHARGE IN LIVE CABLES
CableData Collector supplies intelligence without disrupting supply
An innovative new piece of equipment to detect Partial Discharge (PD) in live electrical cables before they fail has been unveiled by power engineering specialist EA Technology.
Developed by the North West-based firm, the CableData Collector will enable electrical engineers to identify PD in cables that are online, avoiding potential disruption.
PIONEERING NEW EQUIPMENT The pioneering new equipment can identify potential issues in most types of
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www.windenergynetwork.co.uk
insulated cables up to several miles by detecting high frequency pulses generated by PD events within the cable.
Portable, robust and lightweight,
the CableData Collector detects and records PD activity. Through CableData Analysis Studio software, a report can be produced to assess the condition of cables and the likelihood of failure and outages in power lines.
EASIER AND MORE COST EFFICIENT Siôn Hughes, Development Engineer at EA Technology, said: “For Network Operators, it is of the utmost importance to keep any power outages on their network to an absolute minimum; with
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