Earthing Services
• Provide Design and As Built Drawings
• Soil Resistivity Surveys
• Modelling and Design
• Earthing and Lightning Protection Installation
• Copper Brazing
• Exothermic Welding
• Cable and Tape Installation
• Contact Resistance Testing - all joints recorded
• Earth Fall of Potential Testing - up to 2000m.
Cabling Services
• Provide Design and As Built Drawings
• Cable Containment
• Cable Installation – up to 66kV
• Fibre Jointing
• HV and LV Jointing
• HV and LV Cable Fault Finding
• Cable Sheath Fault Finding
• Cable Spiking - explosive and nonexplosive
Cable Testing
• AC and DC Withstand Testing – Very Low Frequency (VLF)
• Insulation Resistance (IR)
• Polarisation Index (PI)
• Dielectric Absorption Ratio (DAR)
• Partial Discharge (PD), and Tan (TD) - diagnostics and analysing for cables up to 52Kv
• Online and Offline (PD) Mapping and Monitoring
• Buried Cable Location and Mapping
• Up to 52kV Cable Fault Pinpointing
• Sheath Fault Location
Substation Commission and Maintenance
• Provide Design and As Built Drawings
• Protection Study
• Setting and programming schemes
• G59, Witness and Annual Maintenance
• Protection Relay Testing
• Distance
• Differential
• Current
• Earth Fault
• Frequency
• Voltage
• G59/2-3 requirements
• Battery Impedance and Discharge Testing
• Contact Resistance
• Gap Testing
• AC Power Frequency Withstand Testing
• DC Withstand and IR Testing
• Current Transformer (CT) and Voltage Transformer (VT)
• Primary Injection Testing
• CT and VT Analysing and Calibrating
• Circuit Breaker Timing and Analysing
• Full Installation, Rewire and Retrofitting
Transformer Commission and Maintenance
• Sweep Frequency Response Analysis (SFRA)
• Transformer Turns Ratio (TTR)
• Transformer Winding Resistance
• Power Factor/Tan
• AC Power Frequency Withstand
• DC Withstand and Insulation Resistance (IR)
• Dielectric Absorption Ratio
• Short Circuit Impedance Load Loss Measurements
• No Load Losses and Current
• Magnetising Current
• Pressure Release Valves (PRV)
• Oil Thermal Indicators (TI)
• Winding Thermal Indicators (TI)
• On-load and Off-load Tap Changer Function and Analysis
• Cooling Function Test - oil pumps, fans etc.
• On site oil breakdown voltage, dissolvable gas analysis and water content.
• Design and Retrofit oil bunds for transformers
• Full onsite Transformer Paint Respray Maintenance and Monitoring Systems
• Online, non-intrusive Partial Discharge Surveys in MV/HV Systems
• Online, Non-intrusive Partial Discharge Mapping in MV/HV Systems
• Offline Partial Discharge Mapping in MV/HV Systems
• Transient Earth Voltage Survey Trend Analysis
• Battery Impedance and Discharge testing
• Power Quality Analysis
• Firm Frequency Response
• Thermography Survey Analysis Report
• Drone Thermography
• Draw Oil Samples - In accordance to BS EN 60475:2011 for onsite or offsite analysis
• Our HV Maintenance Package include Thermal Imaging (TI) and Transient Earth Voltage (TEV) - survey reports as standard
Certified SF6 Handling and Installation
• Gas Testing Analysis
• SF6 Leak Inspection
• SF6 Recovery, top Ups and Refills
• Fault Investigations
• Decontamination and Restoration Works
• SF6 Installation, Servicing and Maintenance
• Recovery, Repair or Decommission on Sulphur Hexafluoride (SF6) filled
High Voltage Electrical Switchgear in Accordance with EU Regulations
NO:517/2014 and the Fluorinated Greenhouse Gases Regulations 2015
Mobile Oil Testing and Analysis
• Water Content and Dissolvable Gas Analysis
• Oil Voltage withstand Testing