Engineering Services

MARC offers Transformer Testing Services for a wide range of transformers such as power, distribution transformers, potential transformers, current transformers. Being experienced in the field we do understand the need of convenience to our customers. Our on-site services allow you to enjoy a complete range of service at your door step 

Specialized Service

Trailer mounted, self contained, 6,000 liters per hour vacuum oil purifier unit for:

  • Vacuum Oil Filling of EHV Transformer
  • Transformer Insulation System Dehydration
  • Oil Dehydration, Degasification & Reclamation

The following nine key gases are analyzed to detect sign of corona discharge, overheating, insulation failure and arching.

  • Hydrogen
  • Oxygen
  • Nitrogen
  • Carbon Monoxide
  • Methane
  • Ethylene
  • Ethane
  • Acetylene
  • Carbon Dioxide

Improving plant availability & reliability

Improving plant life and plant operating flexibility

Improved health and safety parameters


Our comprehensive overhaul and rewind work scope include:

  • Un-Tanking
  • Oil Filtering
  • Tank Cleaning
  • Accessory Cleaning
  • Tank & Accessory Inspection
  • Coil Removal
  • Coil Replacement (Rewinding only)
  • Coil and Core Cleaning & Inspection
  • Re-Assembly
  • Pre-Testing
  • Re-Painting
  • Oil Filling
  • Final Inspection & Test

Repair and Testing Services:

  • Oil sampling, Analysis and Result Interpretation
  • On-site Replacement of Gasket, Bushing and Other Repair
  • On-site Radiator Repair and Replacement
  • On-load Tap Changer Overhaul and Service
  • Winding and Insulation Testing
  • Commissioning and Acceptance Testing of New Transformer
  • Bushing Repair, Overhaul and Testing
  • Factory and Field Inspection

Testing Services include but not limited to:

  • Insulation Resistance
  • Dissipation Factor Test
  • Tan Delta and Capacitance Measurement
  • AC/ DC High Potential Test 
  • DC Winding Resistance
  • Turns Ratio
  • HV Excitation Current
  • LV Excitation Current
  • Short Circuit Impedance
  • Bushing Test
  • Moisture Analyzer
  • Oil Test
  • OLTC Overhaul
  • Calibrate oil and winding temperature measuring device
  • Rewind and Overhaul
  • Oil Purification and Renew
  • Oil leakage Repair