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