Offline Transformer Testing

Power transformers are among the most strategically important and expensive components on any network, and data on their health is therefore vital for effective asset management.

Business benefits

• Develop Health Indices to estimate
  end-of-life
• Check condition following fault conditions
  or overloading
• Extend transformer life
• Maintain high utilisation of existing
  transformers
• Improve loading capabilities
• Identify transformers at risk of failure
• Prevent expensive and disruptive failures
• Minimise replacement costs
• Improve decision making for future load
  requirements
• Improve safety

Market-leading service partners

• EA Technology has 40+ years’ experience
  of working with electricity asset operators
• We provide comprehensive on-site testing
  and analytical services
• Plus in-depth expertise and support
  for clients to optimise their asset
  management
• Testing programmes tailored for
  individual clients

Transformer testing services (UK only)

• Winding resistance
• Excitation current
• Turns ratio
• Capacitance
• Tan Delta
• Sweep Frequency Response Analysis (SFRA)
• Dielectric response
• Leakage reactant
• Partial Discharge

Added value management information

Transformer Diagnostics Testing is a key element in effective, condition-based asset management, which can:

• Establish the present condition of transformers
• Determine their future performance
• Identify if current maintenance practices are suitable – or further interventions are required
• Help evaluate financial and operational risks to the business