Application: 
Detects incipient faults in oil-filled transformers (Power Transformer, Distribution transformer, Rectifier Transformer, Furnace Transformer, LOCO Transformer, Auto Transformer etc) online. 

Salient features: 

• Detects incipient faults by sensing evolved (free) hydrogen gas
• Both types of electrical & thermal faults can be detected in any part
  of transformer tank    
•  Comparatively more sensitive than conventional Buchholz relay
  Easy & quick installation without any major  modification
•  Provides visual / audio alarms for necessary remedial action
•  Results observed on field trials of more than a dozen transformers
  are encouraging

Very economical than equivalent imported one  

Specification:  

• Range   : 0 – 1999
• Accuracy          : ± 10 %
• Repeatability    : ± 2 %
• Response Time: < 2 minutes
• Size : Sensor Head     : 50 mm dia., 50 mm length
• Control cum Display Unit: (170 x 100 x 200) mm
• Weight : Sensor Head: 0.5 kg : Control cum Display Unit: 1.8kg
• Display     : LED ( 4 digit )
•  Input Power     : 220 V AC, < 100 mA
• Alarm :  Lower limit : Visual alarm
• Higher limit : Audio + Visual alarms 

Cost per unit:  Approximately Rs 25,000/- each sensor 
Awards: This product has won the following awards. 

• Dr. Vikram Sarabhai Young Scientist Award 1998-99, Govt. of Gujarat
• Best Product at International Exhibition “ELECRAMA -2002” and
• National NRDC Award -2004 

Patent Granted: No. 204691 dated 1.3.2007

 Application:  

•  Low Tension Distribution system
•   Industries 

Salient features:

• Type tested successfully as per IS : 13947 (Part 2) – 1993
• Indigenously developed
• Compact size
• Modular design
• Low cost compared with other makes for same capacity.

Specification:

• Low tension Air Circuit breaker
• Rated Current – 250 A to 2000 A in three frame sizes
• Rated operational voltage – 415 V
• Rated Insulation voltage – 1000 V
• Rated frequency – 50 Hz
• Rated making and Breaking capacity Frame – 1 & 2 50 kA
• Frame – 3 – 60 kA
• Short time withstand current – 60 kA 1 Sec.
• Overall size :-Frame 1 & 2 – 513 x 312 x 230 mm
• Frame 3 – 513 x 505 x 203 mm
• Weight (Approx.) Frame 1 & 2 – 32 kg., Frame 3 – 50 kg

Award:  National NRDC Award -2005

Application:

Lift irrigation for agricultural purposes and water supply schemes  

Specifications:

	415 V Model	320V Model
Head , m	90	90
Discharge, lps	5.82	5.82
Overall efficiency, %	53	52.6
Full load current, A	16	20
Speed, RPM	2880	2888
Efficiency %, 100% load	82.3	82.0
Efficiency %, 75% load	82.28	81.7
Starting Torque, %	163	161
P.F.	0.835	0.832

Salient Features: 

• Meet all requirements of IS 8034: 2002
• Design based on flat efficiency curve characteristics 
• Motor efficiency comparable with the imported makes
• Pump set capable of operation at Low voltage without drop in efficiency

Cost: Estimated cost is Rs 20,000/-  (Payback Period: 6 months)

Application: 
For analyzing power system behavior in case of contingency by continuous, automatic monitoring of dF / dT through PC to avoid unwanted load shedding. 

Specification: 

• Minimum Sampling interval:  20 milli seconds
• Operating Voltage: 230 V AC
• Input Signal Voltage: 230/110 V AC
• Circular storage buffer, which can hold data for past 21 minutes

Salient Features: 

• Eight 7 – segment displays for displaying frequency (F) and rate of change of frequency (dF/ dT)
• Multi level LED indication for dF/ dT. In case dF/ dT exceeds the set value it will provide an LED indication. 
• RS-232 port to upload data from FTM to PC
• PC-based software generates file in EXCEL. User can use EXCEL software for analyzing the logged data in textural or graphics form.
• The format for FREQUENCY display as 50.12 Hz.
• The format for dF / dT as ±0.12 Hz / sec. 

Cost:  Approx. Rs. 2.5 lakhs per unit.

Application:  In low voltage DC circuit as circuit breaker by utilities, railways, etc 

Specification: 

•  Rated current              : 20 A DC
• Rated voltage                  : 130 V DC
• No. of poles                     : Single pole
• Rated breaking capacity  : 5 kA at 130 V DC
• Din Channel mounted

Salient Features:

• Meets the requirements of RDSO Specification:  SPEC/E-12/1/03
• Indigenously developed
• Modification in existing design of AC MCBs.
  Patent Filed: No. 1676/ MUM/ 06 dated 11.10.2006
  

Application: To increase short circuit fault level of Low voltage switchgear like MCB etc.  

Specification: 

• Rated operation voltage        : Ue 240/ 415 V
• Rated operation current        : Ie 16 A
• Max Short circuit current      : 25 kA rms
• Current Limit                       : 3.8 kA peak (at 25  kA, 240 V)
• Total let through energy        : 14 kA2 s
• Power loss per phase           : 1.7 watts
• Resistance cold                   : 8 milli ohm/ phase

 Salient Features: 

• No movable parts
• Improved safety and reliability
• Light in weight
• Can be used with MCB to enhance short circuit level
• New concept
• Increase life of the protective device
• Economical   

   
Cost:  About Rs. 15/- per piece 
Awards: 

•  Dr. Vikram Sarabhai Young Scientist Award 2004-5, Govt. of Gujarat,
• Certificate of Appreciation at International Exhibition
• “ELECRAMA -2004”
• Best Invention of year 2007 and National NRDC Award –2007
•  WIPO Gold medal 2008 by WIPO (World Intellectual
•  Property Organization), Geneva         

Patent Filed: - No. 1200/ MUM/2007 dated 21. 6.2007.

Application:   Demand side management of Electrical Power 

Specification:

• Rated Voltage – 11 kV
• Rated Current – 80 A
• No. of Poles – 3
• Braking capacity – 1.5 MVA load with 0.7 power factor
• Rated Short time withstand current – 40 kA Peak
• Power frequency high voltage – 28 kV
•  Impulse withstand voltage – 75 kV
• Mounting Arrangement - Horizontal

Salient Features:

• Meets requirements of IS : 9920 – 1985
•  Indigenously developed
• More economical than 11 kV HT Circuit breaker
• Centrally controlled from Control room for HT & LT feeder for load shedding
• Reduces manpower utilization

Application: Energy consumption measurement for domestic consumers  

Specification: 

•  Type:             Static: Single phase, 2 wire

                                Static: Three phase, 4 wire

• Voltage rating:         240 V (+20% to – 40%)
• Basic current:          10 A  (Maximum overload current 600% of Ib)
• Maximum current:    60 A
• Frequency:              50 Hz
• Relevant standard:   IS 13779-1993
•  Class of accuracy:   CL-1%
•  Energy register:       Impulse counter / Stepper motor counter
• Calibrated LED:       6400/3200  pulses per kwh

 Salient Features:    Tamper indication by monitoring both phase and neutral  
Cost per Unit: Approx. Rs 400/- (Without box)  

 Application: 

•  Automatic power factor correction, Energy saving and voltage regulation in agricultural and industrial loads.
•  Can also be installed at sub-stations on the secondary of distribution transformer 

Specification: 

• Load kVAr based automatic switching.
• Software complies the relevant REC specifications
• Capacitors bank ON and OFF operation is based on load kVAr sensing
• Two minutes delay in switching ON operation
• Instantaneous switching OFF of capacitor bank
• Voltage and current unbalance sensing and switching OFF operation of capacitor bank accordingly

Salient Features: 

• Transient free switching of capacitor bank
•  Improved life of capacitors
• Negligible maintenance
• Any number of noise free operation in a day
• No dips in supply line of voltage
• Improved voltage regulation
• Suitable for outdoor application (IP-55 tested)
• Intelligent enough to prevent leading power factor
• All solid state circuitry and no electromechanical device
• Automatic power factor correction (energy saving)
• Highly reliable electronic control

 Cost:  Estimated cost of a 9 kVAr unit is Rs 50000/- excluding    capacitors.

Application: Industrial and Street lighting   
Specification: 

• Rated Supply Voltage:         :            240V AC
• Supply Frequency                :           50 Hz (Power Freq.)
• Supply Current                     :           0.4 Amps
• Low crest factor for lamp current:       » 1.41
• Power Factor                       :           > 0.8
• Low Power Consumption      :           <9 watt
• Efficacy (Lumens/Watt)        :           >87.5

Salient Features: 

Parameter	Conventional Ballast	Prototype Electronic Ballast (ERDA)
Power Factor	0.35	0.8
Input wattage	90 W	78.7 W
Lamp Wattage	70 W	71 W
Power loss	20 W for 70W lamp	7.7 W for 70 W Lamp

Cost:  Approx.  Rs.  800/- per unit.

Application: Industrial and domestic lighting (40 W tubular fluorescent lamp) 
Specification: 

• Rated Supply Voltage:- 240 V AC
• Supply Frequency:-50 Hz (Power Frequency)
•  Supply Current:-  0.183 A
• Low Crest factor:-  ~ 1.41
• Power Factor:- > 0.95
• Low Power Consumption:-  <3 watt
•  Efficacy (Lumens/Watt):- > 55
• Ballast Lumen Factor:- > 90 %
• Cathode Current To any Lead:- As per IS 13021
• Low harmonics (Less than 26 %)

Salient Features: 

• Power Factor         : 0.954
• THD                      : 26 %
•  Crest Factor          : 1.43
• Wattage                : 42.9 for 40 watt Lamp
• Type tests on Prototype were carried out as per IS: 3021 (Pt. I & II)

Cost: Approx.  Rs.  400/- per unit

Application: For reactive power compensation and harmonic elimination at source side of load of any rating 
Specification: 

• Load capacity: 4 kVA
• 4-wire shunt filter configuration
• Three phase 440 V / 50 Hz supply           

Salient Features: 

• System is load (Customer) based
• Harmonic compensation
• Reactive power compensation based on instantaneous   reactive power approach
• High speed analog control
• Current controlled pulse width modulated inverter
• Most suitable for rectifier loads    
  Cost: Approx. Rs. 5.0 lakhs per unit

Application: For online condition monitoring of rotating machine in process/ power plant by analyzing current signature 
Specification: 
To detect online the presence of various internal faults in three phase Induction Motors           
Salient Features: 

• On line detection of the failure of Rotor bars, Stator faults, Air gap Eccentricity, Bearing degradation, Misalignment/Unbalance within Induction motors
• Most useful, reliable and cost effective diagnostic technique for Induction Motors
• Can be used as preventive maintenance tool 

Cost: Approx. Rs. 4.0 Lakhs per unit

Application:  Speed control of induction motor  
Specification: 

• I/P :- Voltage 415 Vrms, 50 Hz, 3 Phase
• O/P :- Variable voltage maximum up to 415 V rms
• Variable frequency: - Max. up to 50 Hz
• Constant V/f.
• 120 deg mode, quasi-square wave    

 Salient Features: 

• Air cooled
• IGBT based analog control
• AT low frequency boost can be adjusted
• Over current trip
• Phase sequence protection

Cost per unit: Rs. 20000/-

Application: For Cooling of phase conductors mounted inside the bus duct 
Specification: 

• 15W, 2880 rpm          

Salient Features: 

• Can operate without any external power supply
• Operate with minimum of 5kA current flowing in the
  phase  conductors
•  Cooling increases with increase in the current in the
   phase conductors 

Cost: Depends on Rating

Application: Ideally suited for use in High Voltage Transmission 
Specification:

• (66 kV suspension type insulator) 
• Mechanical Test     : No breakage observed upto 120 kN 
• Dry Power Frequency Voltage    : Withstood 140 kV for minute and withstand test flashover occurred at 256 kV rms
• Lightning Impulse Voltage withstand test    : Withstood 325 kVp  for both polarity 
• Pollution Performance   : No deterioration of the insulator has   been observed during the 3500 hrs long artificial pollution study

Salient features: 

• Light weight (high strength to weight ratio). A typical 66 kV non-ceramic suspension insulator can weigh between 1.8 to 4.5 kgs, depending on the design
• Good Hydrophobicity
• Easy to handle and non-brittle nature
• Better electrical performance and ultimately good contamination performance
• The silicone compound is made from indigenously available raw materials
• Satisfactory field performance of insulator in polluted locations   

Cost: Approx. Rs. 2500/- for a typical 66kV suspension type Insulator

Application: For Impellers of 4”, 6” Submersible Pump sets
Salient features: 

• High Yield Strength resulting in dimensional stability
•  Wear resistance and low water absorption
• Smooth Surface finish resulting in lower hydraulic losses
• Increase in Pump efficiency by 2-4% 

Specification:  

• Suitable for 4”, 6” submersible pumps
• Head: 90M
• Discharge: 5lps
• Rating: 10HP
• Overall Efficiency: 55%
• Plastic Impellers for any other rating of pump can be developed

 Cost:  Rs. 35 to 75/- per impeller

Application: For Standalone Power Generation in PICO Hydel Systems 
Salient features: 

• Rugged Construction and compact size
• Maintenance free, Single unit along with Induction Generator
• Easy installation and does not requires any civil power house
• IP 68 protected

Specification:  

• Head: 36M
• Discharge: 28lps
• Rating: 7.5kW/10HP
• Electrical Power Generated: 5kW / 3ph/1ph
• Voltage: 415V 3ph / 240V 1ph
• Supplied along with Electronic Load Controller
• Other Ratings of Pump turbine can also be developed

Cost:  Approx. Rs. 50,000/- per unit