High Voltage Services

Electrical Commissioning and Field Services

At RANS Electrical we can cater to all of your commissioning and field services needs. Our experienced high voltage team have the knowledge and capability to install and test a large variety of plant and protection systems. When all testing is finalised we back them up with extensive reports on your equipment, giving you peace of mind that your electrical assets are secure and protected as per the design intended for.

Cable withstand testing:

  • VLF Testing up to 200kV
  • Partial Discharge testing (PD)
  • Tan Delta Testing (TD)
  • Cross Link Testing
  • Sheath Integrity
  • Insulation Resistance
  • Phase Identification

Protection Testing:

  • Distance protection
  • Differential protection
  • Overcurrent protection
  • Earth fault (residual) protection
  • Generator protection
  • Motor protection
  • Trip logic testing

Oil Testing:

  • Dissolved Gas Analysis
  • Oil Screen Chemical
  • Oil Screen Electrical Dielectric Strength
  • Furans, Phenols, Cresols and Passivator
  • Particle Profile
  • Dew Point
  • Polychlorinated bipenpenyls (PCB)

Low Voltage

  • Instrumentation
  • SCADA and PLC systems
  • Condition monitoring equipment
  • Wiring systems incorperating insulation resistance testing and point to point checks
  • AC and DC supply systems including backup power supplies
Broken hill earth grids


  • Insulation quality assessment
  • Circuit breakers Testing incorporation of Analysing
  • Hi Pot testing (up to 50kV)
  • Current transformers (CT)
  • Voltage transformers (VT)
  • Partial Discharge testing (PD)
  • Revenue Metering Testing
  • Primary current injection testing (Up to 800A AC)


  • Ratio
  • Winding resistance
  • Tap changer test
  • Excitation current
  • Short circuit impedance
  • Partial Discharge testing (PD)
  • Tan Delta Testing (TD)

Earthing testing and Assessments

  • Earth Resistance for Earth Grids
  • Earth Potential Rise Testing (EPR)
  • Step and Step Touch Testing

Uninterrupted Power Supplies (UPS) and Harmonic Filters

  • Comprehensive maintenance for your VRLA or flooded batteries
  • Measure of cell voltage levels
  • Total battery terminal voltages
  • Time duration with current and voltage recordings
  • Visual inspection for leaks or bad cells
  • Capacity Testing
  • Capacitor Bridge Test
  • Inspection of battery environment
electrical commissioning

For your next project, talk to the professionals.