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

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