The Erea company has extensive competences and experienced specialists.

Electrical services

Overhaul services for electrical systems and equipment along with inspections, diagnostics and electrical measurements:

• transformers and transformer stations
• generators
• electric motors
• LV and HV switchgear and switching equipment
• battery banks
• rectifiers and excitation systems
• current and voltage transformers
• LV and HV lightning arresters and switches
• lighting systems
• earthing systems
• lightning protection systems
• LV and HV cable lines

Electrical diagnostics and measurements:

• measurements for transformers: insulation resistance, winding resistance, voltage ratio determination, no-load and short-circuit tests
• measurements for generators and electric motors: insulation resistance, winding resistance
• testing: voltage tests of windings, leakage tests of cooling systems (water and gas type)
• tests: stator sheet metal stacks, vibration and temperature, rolling bearing condition and no-load operation
• voltage tests of power equipment with DC and VLF up to 45 kV
• localisation of damaged power cables
• thermal imaging tests