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

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