Complete Service of Power Transformers and Load Tap Changers

Testing, commissioning, maintenance, repair, dehydration, upgrades, diagnostics, and lifecycle support

Saber Power Field Services provides comprehensive service for power transformers and load tap changers (LTCs), supporting assets from low-voltage pad-mounted units to 765 kV transmission-class equipment.

From installation and commissioning to diagnostics, repair, life-extension, and capacity upgrades, our team delivers full lifecycle support—ensuring reliability, performance, and long-term asset protection.

In critical power environments, transformer failure is not just an equipment issue—it is an operational risk. Our services are structured to reduce unplanned outages, support planned shutdowns, and provide rapid field response when system reliability is on the line.

138 kV – 13.8 kV step-down transformer at a Houston petrochemical facility

Outage Mitigation & Rapid Response

Saber Power Field Services supports utilities, industrial facilities, and large commercial operations with proactive and emergency transformer services designed to minimize downtime.

Pre-outage inspections and diagnostic testing
On-site field service teams for planned turnarounds
Emergency troubleshooting and fault analysis
Rapid mobilization for leak repair, LTC issues, and fluid processing
On-site oil processing and dehydration to avoid equipment removal
Field repairs that reduce the need for costly transformer replacement

Our ability to self-perform testing, oil processing, mechanical repair, and commissioning allows us to streamline outage schedules and return critical equipment to service safely and efficiently.

34.5 kV – 345 kV step-up transformer at a Brazoria County BESS facility

Testing & Diagnostic Services

We perform advanced electrical and mechanical testing to evaluate transformer condition and verify operational integrity:

Power factor testing (windings and bushings)
Transformer turns ratio (TTR)
Sweep frequency response analysis (SFRA)
Winding resistance, excitation, and insulation testing
Impedance testing
Induced high-voltage testing
CT testing (ratio, polarity, saturation)
Dissolved gas analysis (DGA)
Oil testing, analysis, and processing
Acoustic/ultrasonic partial discharge detection
Infrared thermographic scanning
Fault analysis

Oil Processing & Fluid Services

Proper fluid management is critical to transformer health and longevity. Our services include:

Vacuum fill and oil processing
Hot oil treatment
Dehydration and degassing
De-sludging
Fuller’s earth oil reconditioning
Fluid retrofills (including biodegradable options)
PCB changeouts

On-site fluid processing capabilities help facilities avoid extended outages and transportation risks.

Installation, Rigging & Commissioning

Full haul, rig, set, and assembly
Vacuum fill and energization support
Start-up and commissioning services
Repair to original specifications

Load Tap Changer (LTC) Services

LTC inspection, maintenance, and repair
Retrofit of legacy LTCs to vacuum-interrupting designs
Control upgrades and communication integration

Mechanical Repairs & Component Replacement

Bushing replacements
Leak repairs and re-gasketing
Valve repair and installation
Gauge and meter repair/replacement
Pressure clamping
Transformer cleaning and painting
Encapsulation services

Upgrades & Life-Extension Solutions

Increased capacity through added cooling fans
Enhanced cooling with added circulation pumps and filtration
Control system modernization
Online monitoring and diagnostic system integration
Communications upgrades

Maintenance Agreements

Saber Power Field Services offers customized maintenance agreements designed to support reliability planning, budget forecasting, and long-term asset management. Proactive maintenance reduces the likelihood of forced outages and helps facilities maintain compliance with manufacturer and industry recommendations.

Power You Can Depend On

When transformer reliability is critical, experience and execution matter. Saber Power Field Services combines advanced diagnostic capabilities, highly trained field technicians, and company-owned equipment to deliver responsive, technically rigorous solutions—whether during a planned outage or an unexpected event.

Backed by the engineering depth and project execution strength of Saber Power, our transformer and load tap changer services integrate seamlessly into broader system upgrades, substation projects, and turnkey EPC programs. From routine maintenance to complex field rebuilds and emergency response, we provide the expertise and field presence required to keep your power systems operating safely, efficiently, and without interruption.

Industries

Electric utilities, municipalities, and cooperatives; data centers; battery energy storage systems (BESS); renewable generation, solar, and wind; conventional generation; industrial and petrochemical; midstream oil and gas; commercial; manufacturing; mining; institutional; health care; government (state, federal and military)