Transformers are among the most critical and expensive assets in any industrial electrical system. Regular testing and maintenance ensures reliable power distribution, prevents catastrophic failures, and extends transformer lifespan. Global Heritage Systems LTD, based in Jubail, provides professional testing and maintenance services for both dry-type and oil-filled (wet) transformers across Saudi Arabia’s industrial facilities.
Dry & OilBoth Transformer Types Serviced
RoutineScheduled Maintenance Programs
SAR 2-15MAvg. Replacement Cost Per Unit
25-40 yrsExpected Transformer Lifespan
Types of Transformers in Industrial Facilities
⚡ Dry-Type Transformers
- Air-cooled, no oil required
- Lower fire risk — indoor use
- Ratings: up to 35 kV / 30 MVA
- Lower maintenance requirements
- Common in substations, buildings
💧 Oil-Filled Transformers
- Oil-cooled, higher efficiency
- Higher power ratings available
- Ratings: up to 500 kV / 1,000+ MVA
- Oil testing and maintenance critical
- Common in power plants, large industrial
Transformer Testing Services
| Test Type | Purpose | Applies To | Frequency |
|---|---|---|---|
| Insulation Resistance (Megger) | Verify winding insulation integrity | Both types | Annual |
| Turns Ratio Test (TTR) | Confirm winding ratio accuracy | Both types | Annual / Post-repair |
| Winding Resistance | Detect loose connections, broken strands | Both types | Annual |
| Dissolved Gas Analysis (DGA) | Detect internal faults via gas analysis | Oil-filled only | Semi-annual |
| Oil Dielectric Strength | Verify oil insulation capability | Oil-filled only | Annual |
| Power Factor / Tan Delta | Assess insulation condition | Both types | Annual |
| Thermographic Survey | Detect hot spots and loose connections | Both types | Quarterly |
| Sweep Frequency Response | Detect winding deformation | Both types | Post-fault / 3 years |
Critical Data: An unplanned transformer failure in a petrochemical plant can result in SAR 1-5 million in direct replacement costs plus SAR 500,000-2,000,000 per day in production losses. Regular testing detects 90% of developing faults before catastrophic failure, with DGA alone catching 70% of oil-filled transformer issues at early stages.
Common Transformer Failure Causes
* Industry data on transformer failure root causes
90%Faults Detected by Regular Testing
CertifiedSEC & SAES Compliant Testing
24/7Emergency Diagnostic Response