Transformer Maintenance Including Oil Samples
Complete Transformer Maintenance Services with Oil Testing and Analysis
We deliver full transformer maintenance for high voltage and low voltage systems across the UK. Our services include visual inspections, functional checks and transformer oil sampling to ensure your assets remain safe, reliable and compliant.
Why Regular Transformer Maintenance Matters
Transformers are critical components in any electrical system. Over time, insulation and oil quality degrade, which can lead to reduced performance or unexpected failure. Scheduled maintenance helps prevent costly downtime and extends the life of your equipment.
What We Do
Our team inspects and maintains transformers across a wide range of industries. We check all physical and operational elements and carry out routine and condition-based maintenance, including diagnostic oil testing.
Maintenance includes:
- Inspection of transformer tank and bushings
- Checking cooling systems and fans
- Cleaning of external surfaces and radiators
- Inspection of earthing and connections
- Checking of HV and LV terminations and partial discharge checks
- Tightening of terminals and fasteners
- Transformer oil sampling and analysis
- Thermal imaging where required
- Functional testing and reporting
Transformer Oil Sampling & Analysis
Transformer oil plays a vital role in insulation and heat dissipation. Over time, contaminants and moisture can build up, reducing performance and increasing risk. We carry out oil sampling and lab analysis to assess condition and recommend actions.
Oil testing covers:
- Dissolved gas analysis (DGA)
- Moisture and water content
- Acidity and dielectric strength
- Furan and sludge presence
- Visual contamination checks
- PCB sampling
We provide detailed lab reports and recommendations for oil treatment, filtration or replacement where needed.
Types of Transformers We Maintain
- Distribution transformers
- Power transformers
- Cast resin and oil-filled types
- Pad-mounted units
- Indoor and outdoor installations
Frequently Asked Questions
How often should transformers be maintained?
Most transformers should be inspected annually, with oil samples taken every 12 to 24 months depending on load, environment and age. We can help build a maintenance schedule that suits your operation.
What is DGA in transformer oil testing?
Dissolved Gas Analysis (DGA) detects gases that form from electrical or thermal faults inside the transformer. It is one of the most important diagnostic tools for assessing transformer health.
Do you test and report on oil quality?
Yes. We collect samples onsite and send them to an accredited laboratory. You receive a full report with results, analysis and maintenance recommendations.
Can you maintain transformers for private networks?
Yes. We work with DNOs, IDNOs, facility managers and private network operators across the UK to provide reliable transformer support.