Testing

Comprehensive Services

365 Transformer Services provides comprehensive transformer electrical testing services to evaluate the condition, performance, and reliability of power transformers. Our testing programs support commissioning, maintenance, troubleshooting, and asset condition assessments for utility, industrial, and renewable energy applications.

All testing is performed in accordance with IEEE, NETA, ANSI, and manufacturer-recommended procedures. Our experienced technicians use calibrated test equipment and proven methodologies to identify potential issues before they result in unplanned outages or equipment failure.

Services & Equipment

Scope of Electrical Testing Services

• Transformer Turns Ratio (TTR) testing
• Winding resistance testing
• Insulation resistance and polarization index testing
• Power factor / Doble testing
• Sweep Frequency Response Analysis (SFRA)
• Current transformer (CT) testing and verification

Testing Equipment Commonly Utilized

• Advanced TTR and winding resistance test sets
• Insulation resistance and PI test equipment
• Power factor / Doble test systems
• SFRA analyzers and diagnostic tools
• CT test equipment and excitation units
• Portable generators for test power when required

Information Needed to Prepare an Accurate Quote

• Transformer nameplate data and configuration
• Voltage class and kVA/MVA rating
• Reason for testing (commissioning, maintenance, troubleshooting)
• Required test scope and applicable standards
• Site location and access conditions
• Outage window and system availability
• Any previous test data available for comparison

Planning

Providing detailed project information allows our team to tailor the testing scope, assign qualified personnel, and mobilize the appropriate diagnostic equipment. This ensures accurate pricing, efficient testing execution, and clear, actionable test results.

Transformer Testing Services