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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

 
 
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