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24/7 emergency service

High Voltage Services in Quebec

Thanks to its team of experienced and highly qualified electricians, Queco Electric Ltd. can meet all your needs in installing and repairing high voltage equipment. Whether it's for the maintenance of a substation or installing new high-voltage equipment, you can count on our team.

High Voltage Services


  • Installation of new transformers and substations

  • Maintenance of new transformers and substations

  • Cable insulation

  • Tests on high-voltage cables

  • Maintenance and testing of PCBs in high voltage transformers

  • Tests on high-voltage transformer oils

  • Changing oil types

  • Transfer of Hydro-Québec lines

  • Preventive maintenance

  • Installation and repair of high-voltage cables

  • Hydro-Québec line transfers

  • Preventive maintenance of high and low voltage substations

  • High voltage cable and transformer testing

  • Substation start-up and commissioning

  • Power Equipment

  • High voltage equipment

  • High-voltage outdoor and indoor substations

  • High Voltage Hydro Connection

  • Internal inventory of high voltage equipment

  • Hydro low voltage connection

  • Electrical circuit analysis


With Hioki brand electricity measurement tools, we are qualified to carry out the following studies:


  • Voltage fluctuation

  • Power in kilowatts

  • Power factor

  • Harmonics

  • Current intensity

  • Kilovolt-ampere demand

  • Energy consumption

Queco Electric Ltd. has more than 51 years of experience in the field of high voltage electricity. Please contact us for more information.

Contact us

Queco Electric Ltd.
555, rue Saint-Rémi
Montreal, Quebec

H4C 3G6



Customer Service

Working Hours

24/7 emergency service


Full coverage of Quebec province


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