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

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