• On line Fault Sensor for Power Transformers

• Up gradation of Short Circuit level of Low tension Air Circuit Breaker

• Energy Efficient Submersible Pump set

• Frequency Trend Meter

• DC MCBs for 5 kA, 130 V DC fault level

• Fault Current Limiter for LT Switchgear & Appliances

• Remote operated 11 kV load break switch and MCCB

• ASIC based single / Three phase class – 1 Energy Meter

• Thermosyphon for Power Transformers

• Micro controller based transient-free switching of LT Capacitor

• Electronic ballast for HPSV Lamps

• Electronic ballast for TFL

• Active Power Filter

• Online Condition monitoring tool for Induction motors (MCSA)

• Three phase variable frequency drive for 3-HP motor

• Cooling Fan for bus duct

• Composite Long Rod Insulator

• Plastic Impellers for Submersible Pump sets

• Pump Turbine for Standalone Power Generation

• Fire Retardant Coating Compound

• RTV Silicone Coating

• Thermo chromic material for temperature sensing

• Heat Shrinkable material

• Rust Dissolving Corrosion Resistant Paint

• Polymeric Coating for under water equipment/ components subjected to erosion

• Electroless Nickel coating for metals

• New polymeric material for wiring Accessories

• Vinyl Ester Resin (VER) from Epoxy Novalac

• Coal tar Epoxy Coating

• Castor oil based capacitor encapsulation material

• Bird deterrent compound

• Martensitic low alloy steel hammer ring

• Silver Tin oxide contact material

• Water Soluble Insulating Coating

• Alkyd Resin from Jathropha oil

• Low Voltage Impulse Generator (as per IS: 13779 and IEC- 61000)

• Current surge tester for RCCB

• Short time over current (half – cycle) test set up for Energy Meter

• Voltage dips and interruption test set-up

• Glow wire test Apparatus

• Digital V-Square Hour Meter

• Point on Wave Switching

• Differential Module for oscilloscope

• Surge tester for energy meters

• Induced failure test Equipment

• Dynamics Training Simulator

• GENSHED

• Fly-Ash based value added Articles (Brick, Molded articles, Soft Board and Hard Board)

• Human Operated Pump

• State-of-the-art study on Static Reactive Power Compensator

• Mobile transformer oil filtration set up

A-1 On Line Fault Sensor for Power Transformers 

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

A-2 Up - gradation of Short Circuit level of Low tension Air Circuit Breaker

 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

A-3 Energy Efficient Submersible Pump set 

Application:
Lift irrigation for agricultural purposes and water supply schemes  

Specifications:

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)

A-4 Frequency Trend Meter 

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.

A-5 DC MCB for 5 kA, 130 V DC fault level 

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

A-6 Fault Current Limiter for LT Switchgear & Appliances

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 operating time              : 3.5 m sec
§         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.

A-7 Remote operated 11 kV load break switch and MCCB 

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

A- 8 ASIC based single/ three phase energy meter (Class 1) 

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)  

A-9 Thermosyphon for Power Transformers

 Application: 

Online conditioning/ treatment of transformer oil in ONAN/ ONAF cooled Transformer 

Specification: 

Online oil filtration system having adsorbents mounted in the flow line of oil and outside main tank of transformer 

Salient Features: 

• Removes harmful undesirable constituents like acid, sludge, water and polar compounds from oil in services

• Reduced frequency of oil filtration

• Easy maintenance

• Improves electrical properties like BDV, Resistivity and Dielectric dissipation factor

•  Higher active life span of transformer oil 

Cost: Depends on capacity of transformer 

Patent Filed: No. 1770/ DEL / 1997 dated 27.06.1997 

A-10 Micro controller based transient free switching of LT Capacitors

 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.

A - 11 Electronic ballast for HPSV Lamps 

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: 

 Cost:  Approx.  Rs.  800/- per unit.

A-12 Electronic ballast for TFL 

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
 

A-13 Active Power Filter

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 active
    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

A-14 Online Condition monitoring tool for Induction motors –
Motor Current Signature Analysis (MCSA)

 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
 

A - 15 Three phase variable frequency drive for 3-HP motor

 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/-

A - 16 Cooling fan for bus duct 

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

A - 17 Composite Long Rod Insulator (upto 66 kV)

 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 one
                                                  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

A - 18 Plastic Impellers for Submersible Pump sets 

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

A - 19  Pump Turbine for Standalone Power Generation  

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

B - 1  Fire Retardant Coating Compound 

Application:  

Increases fire retardant characteristics after coating on any solid
surface  

Specification:         

• Polymer based Paint  

Salient features: 

• Good adhesion and compatible with cable sheath

• Weather resistance

• Excellent fire resistance

• Fast curing at ambient

• Long shelf life

• Economical

• Excellent Oxygen Index

Cost:  Approx. Rs.150/- per kg  

Patent Filed: No. 1783/ DEL / 97 (Granted)

B - 2   RTV Silicone Coating 

Application:

Excellent pollution resistant hydrophobic coating for outdoor insulators 

Specification:       

• Colour                                :   White

• Consistency                       :   Easily pourable

• Viscosity                             :   4200 centipoise

• Tensile strength                  :  10 kg/cm²

•  Elongation at break            :  245 %

•  Dielectric strength in air      :  18 kV/mm

• Volume Resistivity, W - cm  :   6.5 X 10¹⁵   

• Dielectric constant  @1kHz :  6.0

• Dissipation factor  @1kHz  :  0.001

• Shore hardness, A              :   48

 Salient features:

• Room temperature curing

• Excellent hydrophobicity

• Good adhesion to solid surface

• Can be applied by brush or spray

• Good electrical and mechanical properties

• Synthesized from indigenously available raw materials

Cost: Approx. Rs.2000/- per kg

B - 3  Thermo chromic material for temperature sensing 

Application: Temperature sensing on any solid surface  

Specification: 

Transition temperatures  

•  For reversible type    :  50°C and 70°C

• Recovery time          :  2-3 seconds

• Colour change          :  Yellow to orange (50°C)

                                         :  Red to black (70°C) 

• For irreversible type  :  75°C and 110°C

• Colour change         :  Pink to blue (At both temperatures)

Salient Features: 

• Reversible and irreversible thermo chromic materials

• Raw Materials are easily available Indigenously

• Economical

• Can be used as sticker or paint

• Suitable for temperature sensing at remote areas like electrical installations, reaction vessels in chemical industries

Cost:  Approx Rs. 5000/- per kg of material or Rs 2/- per sticker

B - 4  Heat Shrinkable material

 Application: Cable jointing and termination, bus bar insulation, sleeving etc. 

Specification: 

• Tensile strength               : 12 MPa

•  Elongation at break          : >350 %

• Dielectric strength in air    : >25 kV/mm

• Volume resistivity              : > 1015 W cm

• Dielectric constant             :  2.3

• Water absorption               :<0.1%

• Heat resistance                : 200 % (Elongation after 168 h ageing at 158°C)

Salient Features: 

• Meets the requirements of ASTM D 3149-85

• Raw Materials are easily available indigenously

•  Economical

Cost:  Depends on dimensions of heat shrinkable tube and scale of production

B - 5  Rust Dissolving Corrosion Resistant Paint  

Application: On rusted structural parts  

Specifications: 

•  Suggested coating thickness —30 μm  

Salient Features: 

• No need of any surface treatment like sand blasting before application

•  Time saving

• Comparatively economical compared to similar paints

• Manpower saving

• Ease of manufacture

• Ready availability of raw materials

• Room temperature curing. 

Cost: Approximately Rs 250/- per liter

B - 6 Polymeric Coating System For Under Water Equipment & Components Subjected to Erosion

 Application: 

All under water equipment and components which are subjected to silt / cavitation / erosion, such as hydro turbine runner blades, pump impeller casting 

Specifications: 

• Three coat polymeric system for silt / cavitation/ erosion resistance

 Salient Features: 

• Coating system consists of three coats

• First coat - Putty to fill up cavities formed due to erosion

• Second coat – Polymeric coating for cavitation resistance

•  Third coat- Filled polymeric coating for erosion resistance

Cost:  Depends on the type of component to be coated.

B - 7 Electroless Nickel coating for metals  

Application: Any metallic surface which needs better corrosive and wear resistance 

Specifications: 

§         Up to 10 mm coating thickness feasible 

Salient Features: 

• Excellent uniformity

• Good wear resistant (due to increase in hardness)

• Excellent corrosion resistance

• No need of external power supply

• No anode is required

• Simplicity of process

• Alloy coating of Ni-P and Ni-B

• Adjustable magnetic and electrical Resistivity

• Good wetting characteristics

•  Low Hydrogen absorption

Cost :  Approximately Rs. 3.00 per Sq. inch. (10 micron thickness)

B - 8 New polymeric material for wiring Accessories 

Application: 

Potential substitute for expensive Polycarbonate and suitable for electrical wiring accessories like Domestic switches, plug and sockets. 

Specification: 

• Tracking resistance at 250 V - Withstood 50 drops

• Water absorption at ambient temperature for 24 hrs   - 0.7%

• Glow wire test at 850 for 30 sec - Specimens extinguished within 5 sec after removal of flame

• Ball pressure test at 125 °C - Depth of indentation is less than 2 mm

• Mechanical strength 10 blows of suitable impact tester- No cracks observed 

Salient Features: 

• Meets all desired properties as per relevant specification

• All raw materials and ingredients are easily available in local market

• Easy processing

• Can be made of any colour

Cost:  Rs.  110/- per kg. However, it can be reduced further upon bulk production.

B - 9 Vinyl Ester Resin (VER) from Epoxy Novalac  

Application: 

VER can be used as thermosetting resin for many industrial applications and as a binder in resin-lean non-ceramic polycrete insulators

Specification: 

• Dielectric lose factor :0.007

• Permittivity                          :3.52

•  Volume Resistivity, W - cm   :1.4x1015

• Arc resistance, Sec             :76 - 82

• Electric strength, kV/mm      :16 - 17

• Shore Hardness, A               :90 – 93

Salient Features: 

• Apart from above, the resin when used as a binder for making non-ceramic insulators, showed good cantilever strength

• Economical and suitable for insulator application

Cost:  Approx. Rs. 120/- per kg

B-10  Coal Tar Epoxy Coating

 Application: 

Used as corrosion resistant coating on metal, concrete, tank, chemical processing plants, underground water retaining & marine structures, wooden poles, out side sewage pipes and elements exposed to chemical action. 

Specification: 

• Two components system.

• Solid content : 85 - 88%

• Hard, flexible, smooth thick coating

• Economical

• Good water and mild chemical resistant

• Good resistant to salty water

• Excellent adhesion with any solid surface

• Good resistant to impact, thermal and abrasion

 Salient Features: 

• Easily applicable by brush and trowel

• Seals localized cracks and surface porosity

• Strongly bond to most of the building material

• No primer is required

• Cures to a tough elastic waterproof film

• Covering capacity: 18-20 sq. mt per liter for an average 20 –25 micron film thickness

Cost: Approx. is Rs. 160-170/- per litre

B - 11 Castor oil based capacitor encapsulation material 

Application: As an encapsulant for dry type LT capacitor 

Specification: 

• Curing time               : 24 h at ambient temperature

•  Hardness, Shore A   :  10 – 30

• Volume Resistivity    : > 10¹² ohm. cm

• Tensile strength        : 5 kg / cm²

• Elongation                : 60 %

• Thermal conductivity : 0.25 W/m.K

Salient Features: 

• Easy to use

• Room temperature curing

• Easy availability of raw materials

• Does not affect the properties of capacitor

• Can be used for encapsulation of other electrical items with a little or no modification

 Cost: Rs. 90/- per kg

B-12  Bird deterrent compound

Application: 

The compound coating can be applied on any solid substrate and deters birds from sitting on that surface 

Specification: 

• Colour                                 : Pale Yellow

• Consistency                        : Grease (Gel) like

• Odour                                 : Similar to vegetable oil

• Weathering stability           : Slight colour change after 60 days of accelerated ageing test as per ASTM G 53

• Melting point                        : 70 ºC

• Cone penetration at 27ºC      : 15 mm

• Coverage (@ 5mm thickness): 5 kg / m2

Salient Features:

• Low cost, easily and locally available raw materials

• Easily applicable by brush and no adverse effect on human skin

•  Non toxic and eco friendly coating

• Coating does not cause any harm to birds

 Cost:  Rs. 300/- per kg (approx.)

B – 13  Martensitic low alloy steel hammer ring

Application: 

Deployed as impact crushing elements in ring granulators for secondary coal crushing applications. 

Specifications: 

• Micro alloyed steel based hammer rings for ring granulators

•  Unnotched Charpy impact strength: 70 Joules / cm²

• Tensile strength of heat treated material: > 900 MPa

• The room temperature microstructure comprises of acicular
  ferrite and a distribution of matrix and grain boundary
  primary & secondary carbides 

Salient Features: 

• One set of hammer rings can crush about 2.3 lakh metric tonnes 
  of coal

• The hammer rings are ferromagnetic

• The rings are fabricated using a proprietary sand casting process

• Good wear resistance in dry and wet coal grinding condition

Cost: Approx Rs. 1500/- per ring 
Award:    Received Dr. Vikram Sarabhai Young Scientist Award 2005-                 06, from Govt. of Gujarat 

B-14 Silver Tin oxide contact material

 Application: Contact tip of low voltage switchgear 

Specifications: 

• Density  : 98% of theoretical density of monolithic material

• Hardness   : 87 VPN

• Conductivity : 78% IACS

•  Microstructure : Contact tip show uniform distribution
  of tin oxide particles in the matrix of silver

• Conforms to (32A) AC 3 rating. Endurance and make & break  test as per IS: 13947 – Pt. 4, Sec.1 – 1993 and
   IEC: 947 –4-1(1990)

 Salient Features: 

• Non toxic

• Good arc erosion resistance and contact weld ability

• A novel fabrication route based on electro chemistry followed by powder metallurgy 

Cost:     Material cost is approx. Rs. 25,000/- per kg.

B-15 Water Soluble Insulating Coating 

Application: 

Eco-friendly polyester coating for electrical applications e.g. Wire Enamels, impregnating varnish, printed circuit board (PCB), Structural materials. 

Specification: 

• State     : Liquid

• Colour    : Pale Yellow to brown

• Solubility: Soluble in water, alcohol etc.

• Solid Content: 50 – 70 %

• Curing Time: 4 – 6 Hrs.

• Curing Temperature: 150 – 200^oC

•  Thermal Class: Class F

• Dielectric Strength: 60 kV/mm   

Salient Features: 

• Eco-friendly insulating coating

• New technology

• Economical and reliable material

• Reduced risk of human health and fire during coating applications

 Cost:  Approx. Rs.200/- per litre 

Patent Filed: No. 442 / MUM / 2005 on 07.04.2005 

B-16 Alkyd Resin from Jatropha Oil 

Application:            

The varnish is suitable for the LT electrical applications such as impregnation of motor coils, transformer etc. 

Specification: 

 Salient features: 

§         Non-Toxic, Cost Effective and User friendly
§         Raw materials available indigenously
§         Meets the requirements of IS: 10026
§         Superior Electric Strength 

Cost: Rs. 70/- per kg

C-1 Low Voltage Impulse Generator
(as per IS: 13779 and IEC- 61000) 

Application: 

Impulse testing of electrical and electronic equipment such as transformer, energy meter, switchgear etc. 

Specification: 

•  Input supply             : 230VAC, 50 Hz.

• Output voltage peak: 0 to 6 kV

• Open circuit waveform characteristic (equivalent load of 10 k Ohm):

• Front time   : 1.2 micro seconds ± 30%

• Tail time     :  50 microseconds ± 20%

• Short circuit characteristics (impedance 0.1 Ohm):

• Front time    :  8 microseconds ± 20%

• Effective output impedance:   2 Ohm  

Salient Features: 

§         Compact design
§         Fully safe operation due to protected panel
§         Positive and negative polarity pulse selection
§         Variable output range from 0 to 6 kV.
§         Solenoid operated sphere gap trigger arrangement.
§         Charging voltage display by digital kV meter.
§         Oscilloscope output is provided to see the wave shape.
§         Charging capacitor discharge facility provided inside after operation.
§         Charging supply isolation just before operation of sphere gap.  

Cost per Unit: Approximately Rs. 1,35,000/-

C-2 Current surge tester for RCCB 

Application: 

Useful in type testing of RCCB as per IS:12460(Part-1)-2000 specification 

Specification: 

§         As per requirements of IS: 12640 (Part 1) - 2000
§         0.5 µ sec / 100 kHz ring wave
§         Peak value: 200 A ± 10%
§         Virtual front time: 0.5 µ sec ± 30%
§         Period of the following oscillatory wave = 10  µ s ± 20%
§         Each successive peak: about 60% of the preceding peak

 Salient Features: 

§         Indigenously developed
§         Not manufactured in India
§         Meets the requirements of IS: 12460 (Part-1) – 2000

 Cost: Approx. Rs. 75000/- per unit

C-3 Short time over current (half – cycle) test set up for Energy Meter 

Application:  Test equipment is required testing of energy meter 

Specification: 

§         Maximum current  : 3000A AC rms, half cycle
§         Current control      : Through Variac and Voltage display
§   Standard applicable: IS :13779, CBIP report  88 for direct connected  meters 

Salient Features: 

§         Reliable electronic control to avoid successive multiple triggering
§         Guaranteed half cycle
§         Push button control for trigger and reset special features 

Cost per Unit: Approx. Rs. 1,35,000/- lakh

C-4 Voltage dips and interruption test set-up

 Application: In the testing of energy meter as per IS:13779-1999 

Specification: 

• Eight 7-segment displays for displaying different tests

•  Feathers touch keypad to program the system in different 3 tests

• Minimum sampling interval of 20 milliseconds for SYNC operation

• Multi-level LED indication for different test

•  A RS-232 port for remote operation

• PC based software through which whole system can be operated from remote PC

• The format of test display is T.E.S.T-1

• Operating voltage for the system is 230 VAC

• Input signal voltage (output of instrument) 230/ 110 VAC single/ three phase

 Salient Features: 

• All three tests can be performed on a single set up

• Serial communication provided

• PC software stores the test details with date and time

Cost per Unit: Approximately Rs 50,000/-  

C-5 Glow wire test Apparatus 

Application: 

To conduct glow wire test on insulating materials used in LT Switchgear, Energy meters, Appliances, Wiring accessories etc. 

Specification: 

• Apparatus conforms to IS: 11000 (Pt. 2/Sec.1)-1984/ IEC 60695-2-10:2000

• Glow wire loop: Nickel – Chromium (80 / 20)

• Thermo Couple: Type K, Sheathed 0.5 mm outer diameter

• Temperature Range: 550 ºC ± 10 ºC, 650 ºC ± 10 ºC, 750 ºC ± 10 ºC, 850 ºC ± 10 ºC, 960 ºC ± 10 ºC

• Accuracy:  ± 0.5 % 

Salient Features: 

•  Indigenously developed

• Meets all requirements specified in IS: 11000 – 1984

Part 2 / Sec 1)/ IEC 60695-2-10:2000

Cost:  Approx. Rs. 90,000/- per unit
 

C-6  Digital V-Square Hour Meter 

Application:  

In lamps and luminaire industries to determine mean effective life of lamps 

Specification: 

•  Input signal :- 10 V to 270 V AC

• Range :- 0 to 99999.9999

• Supply voltage :- 180 V to 270 V

• Humidity :- 95 % rh°

• Operating Temperature :- 0 – 70 °C

• Accuracy class :- 0.1 % 

Salient Features: 

• Micro controller based system

• Liquid Crystal Display : (4 – digit after decimal point)

•  Memory capacity for more than one month

• Reset facility

 Cost:  Approx. Rs. 10000/- per unit  

C-7 Point on Wave Switching Apparatus  

Application: 

To conduct short circuit test on MCBs, Transformer & LT Switchgear products at controlled switching 

Specification: 

§         Setting of angle from 0 to 360 degree in one degree resolution
§         Accuracy 0.5º
§        Synchronization signal voltage: 230/110 Volt ac, works upto 10% of input voltage
§         Sampling interval : 20 milli seconds
§         Operating voltage for the system: 230 Volt ± 10 % ac 

Salient Features:

§       Eight 7-segment displays for displaying DEGREE and operating MODE

§        Feather touch keypad to program the Unit in different modes and setting the points on wave switching angle in degree
§         LED Indication for Trigger Pulse, Sync Pulse, Firing Angle
§         The format of MODE as LOC (LOCAL) or RE (REMOTE) 

Cost:  Approx. Rs. 50000/- per unit 

C-8 Differential Module for oscilloscope

Application: 

Field study of Harmonics, Waveform Analyzer, Oscilloscope 

Specification: 

§         Input voltage range   :  0 – 1000 V
§         Step down ratio        : 40 & 200
§         Input impedance       : 1 MW
§         Operating voltage for the system: 230 volt +/- 10 % AC 

Salient Features: 

§         Ground is isolated
§         Output of the differential module is floating and can be directly connected to C.R.O. 

Cost:  Approx. Rs. 15000/- per unit

C-9 Surge tester for Energy meters 

Application:  

For testing of Energy meters, electrical transducers as per IEC : 61000 – 4-12  

Specification: 

•  Input Voltage: 230 V ac, 50 Hz

• Output voltage peak: 4-15 kV peak

• Open current wave form characteristic (equivalent, greater or equal to 10 K ohm)

Front Time   : 1.2 µs ± 30%,
                              Tail Time     : 50 µs ± 20%

• Short circuit waveform characteristics (Load smaller or equal to 0.1 ohm) Front Time   : 8 µs ± 20%,
                Tail Time     : 20 µs ± 20%

• Effective out put impedance: 2 Ohms

• Phase shifting: 0 to 360º

• Impulse can be superimpose on supply voltage for the load current of 15 Amp.

Salient Features: 

• Compact design

• Fully safe operation

• Positive and negative polarity pulse selection

• Variable output voltage from 4 – 15 kV

• Solenoid operated sphere gap trigger arrangement

• Output voltage peak display by digital kV meter

• Charging supply isolation just before the operation of sphere gap (trigger)

Cost: Approx. Rs. 6.0 lakhs per unit.
 

C-10  Induced failure test Equipment 

Application: 

To conduct induced failure test on GLS lamps as per IS: 15518 (part 1) 2004 

Specification: 

•  Input voltage                   : 230 V ac, 50 Hz

• Output Voltage peak    : 2.8kVp – 3.1kVp(for lamp rated upto    100W)

                                                  2.4 kVp – 3.1 kVp(for lamp
                                                  rated above 100W)

• Rise time          : < 1 µ sec

• Tail Time         : <10 µ sec for lamps rated above 100W

                                         8-20 µ sec for lamps rated upto 100W

• Angle                    : 70º ± 10º

Salient Features: 

• Lamp rating between 200 V – 250 V

• No control set up required

• Single switch for triggering

Cost:  Approx. Rs. 1.5 lakhs per unit

D-1 Dynamics Training Simulator 

Application: For self training on power system network 

Specification: 

• Two modules ( i ) Load flow ( ii )  Transient Stability

• Facility to change the data of different elements through dialog boxes

• Results of load flow can be seen both graphically as well as in text file

Salient Features: 

§    User friendly and flexible GUL, compatible with any Windows package with minimum required facilities

§        Violation of constraints after execution of load flow is indicated by blinking the corresponding element with sound

§      Transient stability can be executed with different fault options.  Voltage regulator and Governor effects on the stability can be simulated

§        After execution of transient stability results can be seen through different plots

 Cost:  Rs. 1.5 Lakhs

D-2 GENSHED 

Application: Software for Generation Scheduling 

Specification: 

• Two modules (i) Short Term Load Forecasting & (ii) Generation Scheduling

• Aid to generate dispatch instructions to generating stations

• Cumulative display of Plant Load Factor (PLF) and weekly PLF

Salient Features: 

§         Short Term Load Forecasting (STLF) based on day of the week    effect and load inertia

§         Dispatch instructions based on forecasted weekly load

§         Constraints are incorporated for generation capacity of the plant, minimum level based on normative PLF level

§         Minimum costing based on variable cost of IPPs and SEB’s generation sources

Brick 

Application: For civil construction purposes as a substitute for clay brick   

Specifications: 

§         Size – 220X110X75 mm  

Salient Features: 

•  Energy efficient process. Room temperature, water-curing process.

• Smooth surface and plastering is not essential.

• Higher compressive strength than clay bricks.

• Cost is comparable with clay bricks.

• Cement colour.

Cost: Estimated cost is Rs 1.50 to 1.60 per brick, depending upon raw materials availability

 Molded articles 

Application:    Potential substitute for clay & ceramic products

 Specifications: 

• Low water absorption

•  High weather resistance  

Salient Features: 

• Technology is very simple & easily adaptable

•  Items having complex contours can be made

Cost:    Depends upon size & shape of article 

Soft Composite Board  

Application:  Potential substitute for wooden boards  

Specifications: 

• Low Water Absorption

•  Wear Resistance comparable to wooden boards 

• High flexural strength

Salient Features: 

• Performance comparable to MDF & similar boards 

• No effect of UV radiation

• Drilling & sawing possible

Cost: Approx. Rs. 45 / -  (For size – 300X300X10mm)  
 

Hard Composite Board  

Application: Tile / Flooring  

Specifications: 

• Low Water Absorption

• Wear Resistance comparable to Tile - material

• High flexural strength

Salient Features: 

§         Performance comparable to Kota- Stone, Granite and
      Ceramic Tile.
§         No effect of UV radiation 

Cost per Unit: Approx. Rs. 35 / - (For size – 250X250X12mm)

D-4 Human Operated Pump 

Application:  Water pumping for Irrigation, gardening and domestic pumping 

Specification: 

• Delivery:  ¾”

• Head: 3 M

• Suction Head: 1M

• Discharge: 5 lpm

• Human Operated

Salient Features:

• No Fuel required for operating the pump. Works on Human  by power pedalling

• Capable of irrigating 1-2 acre land without any cost of electricity, diesel etc.

• Being a mobile unit can be used for irrigation, gardening and domestic pumping applications

Cost: Approx. Rs. 1,000/- per unit

D - 5 State of art study on Static Reactive Power Compensator 

Application:  For reactive power compensation in the distribution system 

Specification: 

• Study on different type of compensator

• Simulation of Compensator:- Shunt type reactive power compensator

• Supply system:- Three phase four wire LT distribution system

• Supply Voltage:-240 Vrms per phase.

• Load to the system :- 500 kVA

 Salient Features: 

§         Simulations carried for various conditions for both balance loads and unbalance loads.                                            

§         The results provide important base line for developing Static VAR Compensator 

D - 6 Mobile Transformer oil filtration set up 

Application: Online reconditioning of oil of transformer upto 66kV 

Specification: 

• Capacity – One kL/ day

• Weight – 500 kg

• Power Consumption – 5.25 kW

Salient Features: 

• Online transformer oil reconditioning unit useful in remote areas

• Easy to operate and maintained by a skilled labour

• Portable and light weight

• Useful for removal of moisture and polar compounds from oil

 Cost:  Depends on capacity of filtration unit