Thermal Imaging Surveys

Infrared Thermography for Electrical Infrastructure

Thermal imaging detects heat generated by resistance increases, overloaded conductors, loose connections, and failing components — before any visible sign of a problem. Green Watt's certified thermographers carry out thermal imaging surveys of HV and LV electrical equipment for utilities, industrial facilities, data centres, and commercial buildings across India.

Service Scope

High-Voltage Primary Equipment

  • ›Power transformers — tank hot spots, bushing top connections, cooler pipework
  • ›11 kV, 33 kV, and EHV outdoor switchgear — busbar connections, isolator contacts
  • ›GIS — local hot spots on gas compartment enclosures
  • ›Transformer LV and HV cable sealing ends and gland plates

LT and MV Secondary Equipment

  • ›MV/LV switchboards and distribution boards — bus joints, cable lugs, circuit breaker connections
  • ›Motor control centres (MCCs) — overloaded motor feeders, contactors
  • ›Power factor correction (PFC) capacitor banks
  • ›UPS and battery charger output terminals
  • ›Control and protection relay panels

Overhead Lines and Structures

  • ›Transmission and distribution line conductor joints and compression sleeves
  • ›Overhead line insulator strings — pollution-induced heating
  • ›Overhead earth wire connections

Solar PV Arrays

  • ›Module-level thermal survey for hot-cell defects, bypass diode failures
  • ›String combiner box connection thermal check

What You Receive

  • Thermal and visible-light image pairs for every anomaly found
  • Measured and reference temperatures with delta-T values
  • Severity classification (Immediate, Urgent, Routine) per NETA/IS standards
  • Identification of equipment, location, and recommended corrective action
  • Priority ranking for maintenance scheduling

Why Choose Green Watt Field Services

✓Qualified electrical engineers with HV testing experience
✓Calibrated instruments traceable to national standards
✓Comprehensive written reports with photographs
✓Rapid mobilisation across India
✓Independent third-party assessment
✓Pan-India service coverage

Request a Service Proposal

Tell us about your site and requirements. We'll respond with a service scope and fee proposal within one working day.

Contact Us

All Services

Coverage

Delhi NCR, Maharashtra, Karnataka, Tamil Nadu, Gujarat, Eastern India and all major industrial centres.