Power Transformers

National Switchgear has extensive experience in substation operations, upgrades and modifications.
National Switchgear is the primary service provider for substation maintenance, on-site preventive maintenance and circuit breaker repair, testing, maintenance and retrofitting for . National Switchgear is also the North Texas Authorized Warranty/Repair Service Center for .

Infrared Surveys
Certified Thermographers.
Electrical& Mechanical.
Disaster Recovery Services
Standby Generation.
On-site Substation Rebuilding
Bus Fabrication.
Substation Relocation.
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Low, medium and high voltage circuit breaker testing, trouble shooting, and repair.
Protective relay testing, calibration and repairs.
OCB and SF6 testing and repair.
Switchgear maintenance and repairs.
Substation Start-up, Testing & Repair.
Grounding system testing, calibration and repairs.
Control circuit troubleshooting.
OEM Support on all manufacturers equipment.
Cable testing (Power factor and Hipot).
Breaker Mechanism Travel Testing.
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Infrared surveys.
Transformer oil testing.
Equipment Inspections.
Acceptance and start-up testing and inspection.
Upgrade and Modification
Low voltage breaker retrofitting.
Switchgear field additions.
Rental and exchange breakers.
Substation Maintenance Contracts
Substation review and evaluation programs.
Monthly inspections and record maintenance.
Quarterly and annual scheduled preventive maintenance programs.
Battery system testing, repairs, and maintenance.
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24 hour on-call response.
Emergency field repairs.
Spare equipment inventory.
Sheet metal and bus fabrication services.

National Switchgear encompasses a wide range of testing and maintenance procedures intended to improve the dependability, safety, and efficiency of your equipment and facility. We are committed to being a leader in the field services and testing and maintenance industry.

In addition to offering our services for on-site maintenence and repair of power transformers, circuit breakers, switchboard meters, and motor starters, National Switchgear specializes in providing the most advanced switchgear products. Our quality replacement switchgear parts are available quickly for any emergency.

National Switchgear is uniquely able to service customers at their facilities. We can provide heavy onsite installation, testing and startup services, and disaster and recovery operations.

Engineering Services
Power System Studies
Short Circuit & Coordination Studies.
System Failure Analysis.
On-line development and updates.
Load Flow Analysis.
Commissioning and Start-up Services
Acceptance Testing Commercial, Industrial, Utility and Co-generation plants.
Vacuum Breaker Replacement.
Grounding Systems.
Cable Testing and Termination.
Relay Testing.
Rotating Equipment Services
Motor Starters and Controllers.
Motor Control Buckets.
Doble Testing.
Insulation Testing.
Motor Alignment and Bearing Inspections.
Maintenance Services
Substation Testing.
LV Breaker Testing, Rebuild, and Retrofitting.
MV Breaker Testing & Rebuild
OCB, Vacuum and SF6 Breaker Testing and Rebuild.
Power Transformer Services
Oil Degassifying & Vacuum Filling.
Oil Storage Capabilities.
On-site Transformer Repairs.
Doble Testing.
Load Tap Changer Maintenance & Repairs.
Oil Testing & Filtering.
Installation, Relocation and Start-up.
Dehydration Breathers.
Oil Filtration Systems for LTC.
Inert Air Systems.
LTC Replacements Parts and Upgrades
Certified Training
CEU and NETA Credits.
Safety Training - OHSA 269, MSHA Electrical Safety, Lockout Tagout.
Power System Training - Power Quality, Harmonics.
Transformer Training - Theory & Operation, Maintenance, Testing.
Protective Relay Systems - Ground Fault Protection, Motor Theory & Operation.
Power Quality Services
Power Quality Analysis
Power System Monitoring
Energy Audits
Battery & UPS System Services
Automatic Transfer Switch Maintenance.
Cell Maintenance.
Load Testing.
Charger Inspection and Testing.

Power Transformers