The activities of the laboratory include long-term functional evaluation of insulation systems, development of methodologies for Residual Life Assessment of High Voltage Generators and development of Insulating Materials and Components for special-purpose applications like Cone Insulators for Gas Insulated Systems (GIS) and Bushings for Flame-Proof Motors.

Major Achievements:

	Cone Insulators for 145 kV GIS
	66/11 kV Epoxy Terminal Insulator and Terminal Box for Flame-proof and Explosion-proof AC Motors
	1100 V/650 Amps Epoxy Terminal Bushing for Flame-proof and Explosion-proof AC Motors
	200 kV HVDC Capacitor for Filter Bank Applications
	Motorette Testing of Insulation Systems for determination of Thermal Index

Major Ongoing Projects:

Development of 1600 A/40 kA, Oil-to-Gas Busing for 145 kV GIS System

Major Facilities:

	ELCID Test Kit for detection of stator core faults
	Capacitance and Tan-delta Bridge
	Dielectric Loss Analyser
	20 kV rated High Voltage DC Test Set
	Electrodynamic Vibrator for Mechanical Endurance/Motorette testing
	Thermal Conductivity Measuring Test Set
	2.5 T Universal Testing Machine for testing of insulating materials
	75 T Hydraulic Press for laminate preparation
	Recurrent Surge Oscilloscope Test Set

Electrical Machines Laboratory

The laboratory is engaged in the development of special electrical machines, like Brushless Exciters, Permanent Magnet Machines, and High Frequency Motors and Generators. The laboratory also carries out studies to predict machine performances under normal and abnormal operating conditions.

Major Achievements:

	A range of Brushless Exciters for Synchronous Machines up to 10 MW rating
	3 kVA, 1500 RPM, Permanent Magnet Generators for TGs up to 25 MVA rating
	5 kVA, 3000 RPM, Permanent Magnet Generators for TGs up to 50 MVA rating
	8 HP DC Servo Motor with Permanent Magnet Field Excitation
	600 VA, 32 V, 12000 RPM PMG for special application

Major Ongoing Projects:

	Development of 40 kVA, 400 Hz, 12000 RPM Compact Generator
	Development of 205 kW, 210 V, 3400 RPM DC Motor

Major Facilities:

	5 kVA Micro Alternator for simulation of TG operation
	Torque Transducer and Measuring Unit
	Digital Power Analyser
	5 kW Motor-Generator Set
	Integrated Digital Flux Meter
	Digital Storage Oscilloscopes
	Portable Gauss Meter
	Digital Slip Speed Indicator
	Micro Ohm Meter
	AC Variable Frequency Inverter Supply

Power Electronics Systems Laboratory

The laboratory focuses on design and development of power electronic equipment and controllers for traction and industrial applications using the state-of-the-art controls and power semiconductor devices, like GTOs, IGCTs and IGBTs. Power conditioners for non-conventional energy sources, like fuel cells, photovoltaic power packs and battery storage systems, also fall in the scope of activities of the laboratory. The laboratory is fully equipped with facilities to carry out advanced research in the area of Flexible AC Transmissions Systems (FACTS) and Custom Power Devices.

Major Achievements:

	1 MVAR STATCOM for industrial applications
	180 kVA, IGBT-based single phase-to-three phase static converter for AC Locomotive
	320 kW Inverter of 3600 HP Diesel Electric Locomotives
	Natural-cooled Inverter Controls for 25 kVA under-slung System for AC Coaches for Indian Railways

Major Ongoing Projects:

Development of Three-phase AC Drive System for Diesel Electric Locomotives (Phase-1) (MOU Project for 2003-04)

High Voltage Engineering Laboratory

The laboratory is engaged in analytical and experimental studies aimed at performance improvement of Power Transformers, development of Gas Insulated Products, Protective Spark Gaps for series compensation schemes, etc. The laboratory has developed a number of computer programs for design of transformers and reactors. 

Major Achievements:

	32 kV/220 kV Protective Spark Gaps
	Computer Programs for impulse voltage distribution in the transformer windings
	400 kV SF6 Gas filled Bus Duct
	145 kV, SF6 Gas Insulated Bushing
	Resin Cast Voltage and Current Sensors for medium voltage switchgears

Major Ongoing Projects:

	Development of 400 kV Spark Gap
	Direct Measurement of Hot Spot Temperatures in Transformer
	Failure analysis of HVDC Converter Transformer

Major Facilities:

	Partial Discharge (PD) Test System
	Acoustic PD Detector for Transformers
	900 kV Impulse Voltage Generator and Measurement System
	35 kV Recurrent Surge Generator
	Oil Breakdown Test Set
	Schering Bridge
	500 kV Testing Transformer
	100 kV HVDC Test System
	Test facilities for RLA of Transformers like Residual Voltage Measurement System, Tera Ohm Meter, Frequency Response Analyser, Capacitance and Tan Delta Bridge, and Winding Resistance Meter

Gas Insulated Products & Switchgear Development Laboratory 

The laboratory is engaged in analytical and experimental studies aimed at new designs and performance improvement of gas insulated substations, gas and vacuum circuit breakers and auxiliary equipment for gas insulated power equipment. The laboratory has developed a number of computer programmes for designs of gas insulated sub-systems used in transmission and distribution systems.

Major Achievements:

	Medium Voltage GIS (isolated and three-phase common versions)
	145 kV Gas Insulated Substation (presently under demonstration)
	Insulated Nozzle Type Gas Circuit Breaker of 145 kV/ 31.5 kA ratings
	Gas Insulated Surge Arrestors up to 145 kV
	Gas-to-Cable Termination for 145 kV GIS.

Major Ongoing Projects:

	Development of 3-phase Compact Circuit Breaker for 145 kV GIS
	Development of 145 kV/ 40 kA SF6 Circuit Breaker
	Development of Permanent Magnet Actuators for VCB
	Development of Hydraulic Actuator for GIS Circuit Breakers

Major Facilities:

	PD-free 325 kV SF6 Gas Insulated Test Transformer
	1 Mega Joule, Energy Storage Capacitor Bank
	Ultra High Vacuum System
	Halogen Leak Detector and MSLD
	Short Circuit Testing Transformer, 6.6 kV/440 Volts, 31.5 kA
	2500A High Current Source for Heat Run Tests
	Circuit Breaker Analyser
	4-channel Digital Oscilloscope
	18 Channel UV Recorder
	Dust-Free Assembly Room