Rectifier drawer upgrading
Breaker after refurbishing
Busbar manufacturing
25kV Switchgear
Mobile services units
Protection relay
Rectifier control card upgrading
Infrared picture
Sectionneurs 120kV
120kV Power breaker
Thyristors verification
Protection panel upgrade (After)
Switchgear design
Disjoncteur avant remise à neuf
Contact and insulation resistance mesurement
Wave quality measurements
Capacitor bank
Protection panel upgrade (Before)
6MVA Power transformer
6MVA Power Transformer
Time-current curve protection analysis
Primary injection test
46MVA Power transformer
Thermographic inspection
Power transformer
Industrial battery charger
6MVA Power Transformer

Field services - Protection relay programming and maintenance

Protection relays are the key to equipment life expectancy under all fault conditions. The protection relays primary purpose is the supervision of electrical networks and thereby ensure breaker tripping under short circuit or abnormal conditions.

Regardless of the technology, the MDL Énergie has all the necessary equipment and instruments for protection relays inspection and calibration.

  • Programming and set point adjustments
  • Relay pick-up verification
  • Verification of the time delay between two point on the protection curve
  • Tripping test through CT secondary injection
Protection relay
Protection relay