Services
Our Services
Having Repaired and Refurbished over 1500+ Transformers of 40 different OEMs ranging from 1 MVA to 60 MVA capacity, On our site has developed expertise and knowledge about various of Types of Transformers. Our factory infrastructure is capable to do complete remanufacturing and test of all types of Transformers up to 60 MVA, 120 KV voltage Class.
Apart from factory services, we offer wide range of on-site services like Periodic overhauling/dry out, internal inspection and fault diagnostic services and Testing.
In case any spares are required during on-site services, we keep them in stock for smooth execution.Our constant endeavor at Usha Electrical is to provide our customers “Quick, Genuine and Reliable Services at all times”.
We our services PAN India and are already working with 100+ Customers in 18 states
Substation Modification
• Annual Maintenance Contract (AMC) of All Switchyard Equipment (11KV to 765 KV).
• Transformer oil filtration
• Dry type Transformer
• Control Transformers
Transformers Routine Test (5MVA to 500 MVA)
• Voltage Ratio Test.
• Turns Ratio Test.
• Magnetic Balance Test.
• Open Circuit Test
• Short Circuit Current Test.
• Vector Group Verification Test.
• Winding Resistance Measurement.
• Insulation Resistance / Polarization Index Measurement.
• OLTC Continuity Test
Transformer Special Testing (11KV to 765 KV)
• Sweep Frequency Response Analysis Test(SFRA).
• Dielectric Frequency Response Analysis Test (DFRA).
• Capacitance Tan Delta Test.
• On Line Partial Discharge Test(PD).
INSTRUMENT TRANSFORMER (CT/PT/CVT & IVT ) (11KV to 765 KV)
• Ratio Test (Current/Voltage Method).
• Polarity Test.
• Excitation (Saturation),
Test/Knee point Test.
• Insulation Resistance Test.
• Winding Resistance Test.
• Capacitance Tan Delta Test.
Circuit Breaker Test (11KV to 765 KV)
• Dynamic Contact Resistance Measurement Test
• Travel & Velocity Measurement Test.
• Contact Resistance Measurement Test.
• Timing Measurement Test.
• Dew Point Measurement for SF6 Circuit Breaker.
• VIDAR Test for Vacuum Interrupter.
• High Voltage Test.
• Insulation Resistance Measurement.
• Capacitance Tan Delta Test.
• PIR Timing Measurement Test
Isolators Testing (11KV to 765 KV)
• Contact Resistance Measurement Test.
• Insulation Resistance Measurement Test.
Lighting Arrestor Testing (11KV to 765 KV)
• Insulation Resistance Measurement.
• Online Leakage Current Measurement.
• Counter Test.
Earth Pit Testing
• Earth Resistance Measurement Test.
LT/HT PANEL TESTING (Upto 33 kV)
• Current Transformer Testing
• Potential Transformer Testing
• Vacuum Circuit Breaker
• Air Circuit Breaker Testing
• Lightning Arrestor Testing
• Busbar Testing
• Relay Testing
Protection Relays Testing
• Testing & Calibration of Protective Relays.
• Programming & Parameterization of Numerical Relays.
• Relay Coordination & Setting Calculations.
• L&T Make ACB Microprocessor Based Relay Testing.
Cable Testing
• AC/DC Hi-Pot Test upto 33 kV
• VLF High Voltage Test
• Capacitance Tan Delta Test
• Partial Discharge Measurement.
• Insulation Resistance Test.
Motor Testing
• Capacitance Tan Delta Test.
• Insulation & Resistance Test.
• Winding Resistance Measurement Test
• Motor Current Signature Analysis Test.
• Motor Vibration Analysis Test.
Thermography Testing
future failure due to overheating This service is offered to identify hot spots in the following instruments using Intro-Red Thermography
• Transformer Bushings
• Circuit Breakers
• Isolator Contacts
• Bus-bar Joints
• Line Joints
• Motor/Generator Bearings
• Cable Joints
SOLAR INSTALLATION
• On-Grid RoofTop Solar Solutions.
• Off-Grid RoofTop Solar Solutions. All In One Street Lighting.
• Solar Water Heater Solution.
• Electrical Earthing Solution.
• All Types Of Solar Maintenance Solution.
