Electrical tests

Qualifying the performance of electrical equipment and simulating incidents encountered in revenue service

Tests objectives :

• Check the functioning of low power and high power products according to a standard or a technical specification
• Check the conformity of a product or a series
• Check that equipment functions properly
• Assess life potential of a component
• Conduct tests as required by the customer. Examples:
  – Overheating of electrical components
  – Behaviour at high voltage (120 kV – 50 Hz) and with strong direct or alternating current (100 ms window, 40 kA at 1,800 V DC)
  – Performance of electrical equipment: Rheostats, static converters, etc.
  – Short-circuit tests on specific equipment (e.g. transformers)
  – Evaluation of switchgear performance: Contactors, circuit breakers, switches, etc.
  – Measurement of harmonic currents

Tests facilities :

• DC power system: 1.5 kV/3 kV DC – 5 MVA
  
• Single-phase power system: 50Hz, 8 to 30 kV AC – 12 MVA
  
• Three-phase power system: 50Hz, 0 to 2 kV AC – 1.5 MVA
  
• High-intensity power system: 0 to 20 kA, 10 V DC
  
• High-voltage resistance equipment: 0 to 120 kV AC – 50 Hz
  
• Climatic test chamber (40°C)
  
• Switchable outdoor OCL: 25 kV/50 Hz, 1.5 kV, 3 kV
  
• Digital data acquisition and processing system
  
• Voltage and current sensors
  
• Temperature measurement with or without electric potentialue

Testing norms :

According to the customer’s technical specifications

Qualify the performance of electrical insulators and assemblies

Tests objectives :

• Assess voltage withstand of materials or
finished products
• Identify the creepage distance of an
electrical assembly or the breakdown
voltage of a component

Tests facilities :

HV generator 20 KVAC – 70 KVDC

Testing norms :

EN 50124-

EN 60060-

EN 60077-