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Prysmian Group UK


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High Voltage Jointing

High Voltage Jointing

For almost 100 years Prysmian cables and systems (formally known as Pirelli Cables) has been providing and maintaining High Voltage and extra High Voltage Cable Systems throughout the UK.

When it comes to performing cable jointing services on existing or newly installed power cable systems in the UK there is no other company who can claim to have greater experience that Prysmian, the company who has been designing, manufacturing, installing and maintaining pressurised fluid filled and polymeric cable systems since their introduction into the UK.

High Voltage Cable Jointing Services

Prysmian in the UK has a large fully trained jointing work force currently comprising of 35 High Voltage Cable Jointers and 9 Fluid Mechanics. All Prysmian jointing operatives have undergone training and certification in Prysmian’s own purpose built training school. Prysmian cable jointers also undergo regular refresher training within the Prysmian jointer training school in order to ensure that Prysmian’s high standards are being maintained.

Prysmian in the UK are able to offer fully trained jointing service on fluid filled and polymeric insulated cables for operating voltages up to 400kV.

Our site jointing operatives are supported from head office by Jointing Engineers Cable Designers and Cable Accessory Designers and our logistics departments extensive holding of special jointing tooling and materials.

Our cable and accessory manufacturing resources enable Prysmian to identify and provide any materials required.

Should it become necessary, additional jointing resources can be called upon from Prysmian affiliates outside of the UK including France, Italy and the Netherlands.

Mobile High Voltage Testing Capabilities

Prysmian offer a Mobile, on-site High Voltage Testing service for new and existing power cable circuits and this testing service is performed with the same high degree of diligence whether the cable is supplied by Prysmian or from an alternative source.
High voltage tests are required on newly installed circuits or prior to returning a cable circuit into service following replacement of major components, such as cable terminations or cable joints or the diversion of an existing circuit.
Prysmian are able to perform a full range of tests on a cable circuit whether as part of fault diagnoses or routine maintenance performed in order to avoid a fault and hence a forced outage occurring in the future.

Mobile Testing Facilities Include:

High Voltage Testing

• High Voltage (HV) DC testing at voltages from 10kV to 710kV.
• High Voltage AC Testing at voltages from 50kV to 300kV
• Partial Discharge Monitoring on termination and joints while energised by the AC test equipment.
• On line partial discharge monitoring of circuits on load.

Low Voltage Testing and DC Testing up to 15kV

• DC Conductor Resistance Tests
• Sheath Resistance and Continuity Checks
• Contact Resistance Measurement
• DE PE Oversheath testing at up to 12kV
• Oversheath Fault location.
• Insulation Resistance measurement
• Cable Sheath Voltage Limiter- Tests for correct operation up to 15kV.
• Cable cross bonding verification checks
• Impedance Measurements