Electrotechnical services · Quebec

The trusted namein high voltage.

Data center commissioning, electrical maintenance, transformer assembly and testing, oil filtration and degassing.

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Saint-Jean-sur-Richelieu, Québec

Educational power transformer cutaway: HV bushings in front and LV bushings behind, insulated windings, shared magnetic core, radiators and conservator

ASSEMBLY AND SUPERVISION

ELECTRICAL TESTING

EXPLORE SET’S EXPERTISEASSEMBLY · TESTING · COMMISSIONING

OUR ROLE

Your operations depend on a reliable electrical supply.

SET

SET assembles, commissions and maintains electrical equipment for data centers and industrial facilities. Our testing and analysis help you plan maintenance and equipment upgrades.

SET’S EXPERTISE

Services for
your electrical systems.

From assembly to maintenance, explore our five main service areas.

CRITICAL POWER

Data center commissioning

SET works mainly at L1 and L2: equipment inspections, assigned electrical checks and documented results before energization.

L1: factory documentation and acceptance checks
L2: delivery, installation and electrical verification
Inspection records and follow-up of outstanding items

Let’s discuss your needs

Conceptual illustration of closed switchgear cabinets in a data center electrical distribution room

Follow the power

Power supply illustration

Servers stay powered

Utility supply. The utility powers the servers through an uninterruptible power supply (UPS).

Battery support. The UPS battery keeps the servers powered while the generator starts.

Generator supply. Once the generator is ready, the transfer switch connects it to the UPS.

This diagram illustrates the power supply, not SET’s commissioning test scope.

POWER TRANSFORMERS

Transformer assembly and testing

SET assembles power transformers, inspects the assembly and performs electrical tests before commissioning. We record the results in the equipment’s technical documentation.

Transformer assembly and site supervision
Assembly inspection, electrical testing and test witnessing
Commissioning and technical documentation

Let’s discuss your needs

Assembly supervision illustration: a harnessed technician on the transformer guides the lowering of a high-voltage bushing suspended from a crane. — Assembly supervision · Illustration

INSULATING OIL

Oil filtration, degassing and analysis

SET filters and degasses transformer oil to remove particles, water and dissolved gases. We also collect samples for laboratory analysis by our sister company, DieleXLab.

Particle filtration, vacuum dehydration and degassing
Oil sampling and laboratory analysis by DieleXLab
Engineering analysis by SET, on request

Our sister companyDieleXLab See filtration and degassing Let’s discuss your needs

ON-SITE OIL SAMPLING

Oil testingSampling jar · 1 L

Dissolved gas analysis · DGAGas-tight syringe

The 1 L jar holds the oil sample for breakdown voltage testing and other analyses.

SET sampling · DieleXLab testing

PROTECTION UPGRADES

Upgrade your electrical protection

SET replaces obsolete relays, upgrades protection systems and adapts equipment control circuits. The work includes the testing and documentation needed to return the equipment to service.

Protection upgrades, including SEL relay integration
Replacement of obsolete and electromechanical relays
Control updates, testing and recommissioning

Let’s discuss your needs

Existing cabinet with analog meters and electromechanical relays — concept illustration — SAME CABINET. NEW PROTECTION.

Same cabinet retrofitted with one SEL-751-style relay and an adapter plate covering the old openings — concept illustration — SAME CABINET. NEW PROTECTION.

INFRARED INSPECTION

Thermography

Infrared inspection identifies abnormal heating in operating electrical equipment. SET documents the findings and recommends further checks or maintenance.

Infrared inspection
Hot-spot detection
Reporting and recommendations

Let’s discuss your needs

Illustration of an electrical cabinet with three copper busbars, a circuit breaker, power cables and an auxiliary terminal block. — CoolerWarmerIllustration · Simulated temperatures

CoolerWarmerIllustration · Simulated temperatures

ADDITIONAL SERVICES

Engineering, maintenance
and training.

Power system studies, protection testing, technical documentation and training for your team.

Engineering studies

SET assesses your electrical system and provides recommendations based on its characteristics, your operating requirements and applicable standards.

Protection coordination
Short-circuit and arc flash studies
Feasibility, load, power factor and harmonic studies

Let’s discuss your needs

Electrical equipment maintenance

SET plans and performs electrical equipment maintenance around your operating constraints, including inspections, electrical tests and documented checks before return to service.

Maintenance planning and equipment inspections
Electrical tests and documented findings
Generator-transfer and power-restoration checks under the maintenance plan

Let’s discuss your needs

Relays and protection systems

SET programs and tests relays to verify the operation of your electrical protection systems. We also replace obsolete relays.

Programming and electrical testing
Protection modernization
Obsolete relay replacement

Let’s discuss your needs

Engineering documents

SET prepares drawings and technical specifications for equipment procurement, installation work and maintenance.

Single-line and three-line diagrams
Control schematics
Technical specifications and procurement

Let’s discuss your needs

Training and technical advice

SET trains your teams in electrical hazards and equipment operation, and provides advice on technical questions.

Electrical risk awareness
Arc flash and incident energy training
Equipment operation support

Let’s discuss your needs

Specialized field equipment

Oil filtration and vacuum degassing.

SET uses specialized equipment to remove water, dissolved gases and particles from transformer oil. This helps restore its insulating properties as far as its condition allows.

Follow the oil through the circuitOilWater + gases

The pump connected at the top evacuates the chamber. The pressure dial falls to 0.1 Torr before oil enters.
The priming pump draws oil from the bottom of the transformer through the inline heater. It falls onto the coalescing filters, disperses into droplets and fills the chamber to about half height.
After the vacuum chamber, oil passes through the antioxidant or sand vessel. The vessel’s isolation valves are open and its bypass is closed: oil flows through the vessel, with no flow through the bypass.
The outlet pump returns warm oil to the space above the oil level in the conservator. The exchange continues throughout degassing.

Simplified process illustration. Pressure, levels and timing illustrate the sequence; actual settings depend on the equipment and intervention.

A continuous oil circuit

Hoses connect the transformer’s bottom valve to the degassing unit. A priming pump, inline heater, vacuum chamber, additive or sand vessel with bypass valves, and outlet pump form the circuit. Warm oil returns above the oil level in the conservator throughout degassing.

SET records the work and collects samples. DieleXLab performs the laboratory analyses used to assess the oil before and after the intervention.

Plan filtration or degassing

Particle filtration: Filter elements retain suspended solid contaminants.
Vacuum dehydration: Controlled heating and vacuum extraction reduce moisture in the oil.
Degassing: The vacuum chamber extracts dissolved air and gases.

THE SET APPROACH

Plan the work.
Verify the results.

We agree on the scope with you, coordinate the work on site and record the results for your operations team.

01
Define the scope.
We review your equipment, operating constraints and objectives with you to define the scope of work.
02
Coordinate the work.
We coordinate assembly, testing or upgrades with your team, taking site constraints into account.
03
Document the results.
We provide test results and technical documentation to support commissioning or return to service and help you plan maintenance.

PLAN.CARRY OUT THE WORK.VERIFY.

IN THE FIELD

Our work,
in the field.

Explore our work in commissioning, maintenance, transformer assembly and testing, oil filtration and thermography.

Illustrative workflow

Data center commissioning, from L1 to L2

An example of how equipment checks and records support the early commissioning stages.

Conceptual illustration of electrical test equipment and an inspection clipboard beside closed switchgear cabinets. — Illustrative example; not a customer project record.

Review the equipment records.

The team reviews the equipment requirements and factory test documentation. Inspections and electrical checks are defined by SET’s assignment in the commissioning plan.

Inspect the installed equipment.

On-site checks cover equipment condition, identification, assembly and connections. The assigned electrical tests and any discrepancies are recorded before the next commissioning stages.

Hand over the findings.

Test results, inspection sheets and outstanding items are assembled for the commissioning team. Each item remains traceable to the equipment concerned.

Deliverable: equipment inspection records, electrical test results and a list of items requiring follow-up.

Read the work summary

Illustrative workflow

Review the equipment records.: The team reviews the equipment requirements and factory test documentation. Inspections and electrical checks are defined by SET’s assignment in the commissioning plan.
Inspect the installed equipment.: On-site checks cover equipment condition, identification, assembly and connections. The assigned electrical tests and any discrepancies are recorded before the next commissioning stages.
Hand over the findings.: Test results, inspection sheets and outstanding items are assembled for the commissioning team. Each item remains traceable to the equipment concerned.

Discuss a similar project

Illustrative workflow

Prepare, inspect and verify the equipment

Electrical inspections and tests scheduled around the site’s operating requirements.

Conceptual illustration of a technician inspecting a high-voltage circuit breaker in a substation, with a portable breaker analyzer nearby. — Illustrative example; not a customer project record.

Define the maintenance scope.

SET reviews the equipment history, operating constraints and work requested. The team coordinates access and any necessary outage with the operator.

Carry out the assigned checks.

Inspections and electrical tests assess the equipment condition. When included in the maintenance plan, SET also checks generator transfer and return to utility power.

Record the work and next actions.

The report identifies the equipment checked, measurements taken and points requiring attention. These records help the operator plan subsequent maintenance.

Deliverable: a maintenance record with test results, findings and recommended follow-up.

Read the work summary

Illustrative workflow

Define the maintenance scope.: SET reviews the equipment history, operating constraints and work requested. The team coordinates access and any necessary outage with the operator.
Carry out the assigned checks.: Inspections and electrical tests assess the equipment condition. When included in the maintenance plan, SET also checks generator transfer and return to utility power.
Record the work and next actions.: The report identifies the equipment checked, measurements taken and points requiring attention. These records help the operator plan subsequent maintenance.

Discuss a similar project

Illustrative workflow

Transformer assembly, inspection and testing

SET performs assembly work, inspects the assembly and records electrical checks before commissioning.

Illustration of an assembly inspection while a transformer bushing is positioned. — Illustrative example; not a customer project record.

Coordinate the assembly work.

The team reviews the manufacturer’s documents and the site requirements, then coordinates the installation of transformer components and accessories.

Check the completed assembly.

Assembly inspections cover the installed components, connections and the checks specified for the equipment. Findings and any work still required are recorded.

Document the electrical tests.

SET performs the assigned electrical tests and compares the results with the project and manufacturer requirements. The results become part of the transformer’s technical record.

Deliverable: assembly inspection sheets, electrical test results and a record of outstanding items.

Read the work summary

Illustrative workflow

Coordinate the assembly work.: The team reviews the manufacturer’s documents and the site requirements, then coordinates the installation of transformer components and accessories.
Check the completed assembly.: Assembly inspections cover the installed components, connections and the checks specified for the equipment. Findings and any work still required are recorded.
Document the electrical tests.: SET performs the assigned electrical tests and compares the results with the project and manufacturer requirements. The results become part of the transformer’s technical record.

Discuss a similar project

Illustrative workflow

Filtration and degassing of transformer oil

From the initial assessment to follow-up sampling, SET prepares the work, performs on-site filtration and documents the intervention.

Assess
Define the filtration requirements.
Sampling and available analyses help define the work needed. SET prepares the filtration and vacuum equipment for the oil and transformer concerned.
Filter
Remove particles, water and gases.
SET connects the unit to the transformer and performs filtration and degassing according to the identified needs. The team monitors the intervention and records its observations.
Verify
Check the oil after the work.
SET records the work and takes follow-up samples. DieleXLab carries out the laboratory analyses used to assess the oil against the project requirements.

Deliverable: a work record and oil analysis results for equipment follow-up.

See the animated oil circuit

Illustrative example; not a customer project record.

Discuss a similar project

Illustrative workflow

Inspecting an abnormally warm connection

This example shows how a temperature difference is identified, investigated and checked after corrective work.

Thermal illustration showing a warmer connection. — Illustrative example; not a customer project record.

Identify the temperature difference.

In this thermal illustration, the centre connection is warmer than those on the neighbouring phases. The inspector records its location and operating conditions.

Determine which checks are needed.

The qualified team reviews the temperature difference alongside loading, comparable connections and equipment characteristics. They determine the checks and work needed.

Inspect after the work.

A follow-up inspection under comparable conditions checks the result of the work. The original finding and follow-up observations are kept in the maintenance record.

The report records the finding, the agreed action and the check to perform after the work.

Read the work summary

Illustrative workflow

Identify the temperature difference.: In this thermal illustration, the centre connection is warmer than those on the neighbouring phases. The inspector records its location and operating conditions.
Determine which checks are needed.: The qualified team reviews the temperature difference alongside loading, comparable connections and equipment characteristics. They determine the checks and work needed.
Inspect after the work.: A follow-up inspection under comparable conditions checks the result of the work. The original finding and follow-up observations are kept in the maintenance record.

Discuss a similar project