Modi Laboratary

Electric Testing Laboratory

Electrical Testing Laboratory
Test Facilities For
  • Electrical & Communication Cables
  • Enameled Winding Wires
  • A.C.S.R
  • Bus-Bars, Earthing Rods & Strips
  • Pressure Sensitive Self Adhesive PVC Tapes
  • Miniature Circuit Breakers
  • Electrical Accessories
  • Conduits
  • Switches
  • Plugs
  • Socket-Outlets
  • Lamp Holders
  • Electrical Home Appliances
  • Refrigerators
  • Stationary Storage Type Water Heaters
  • Instantaneous Water Heaters
  • Mineral Filled Sheathed Heating Elements
  • Immersion Water Heaters
  • Electrical Iron
  • Different Insulation Materials
  • Fractional Horse Power Motors
  • Fuse Base & Fuses
  • Terminal-Connectors for Automobiles
  • Automobile Cables
Thrust Areas & Activities :
Tests Performed on Cables
  • Annealing Test for Copper Conductor
  • Tensile Strength for Aluminum Conductor
  • Wrapping Test for Aluminum Conductor
  • Conductor Resistance
  • Physical Tests for Insulation and Sheath
    a. Thickness of Insulation and sheath
    b. Tensile Strength and Elongation
    c. Aging in Air Oven, Variation in T.S. and Elongation
    d. Loss of Mass after Aging
    e. Hot Deformation
    f. Heat Shock
    g. Shrinkage
    h. Thermal Stability
    i. Hot Set test for XLPE Insulation
  • Bleeding and Blooming
  • Colour Fastness to Day Light
  • Colour Fastness to Water
  • Cold Bend
  • Cold Impact
  • Flammability
  • Insulation Resistance
  • High Voltage
  • High Voltage Water Immersion
  • Water Absorption (Gravimetric)
  • Tensile Strength & Elongation of Armouring
  • Dimension of Armouring
  • Zinc Coating of Armouring
Method of Test
  • Method of Test for Cables
  • Method of Test for PE Insulation
  • IS : 10810 -1984
  • Pt. I TO Pt. 61) IS : 2530 - 1963
Material Specification (References)
PVC Insulated Cable Working Voltage 1100 V IS : 694-1990
PVC Insulated Heavy-Duty Cable 1100 v IS : 1554(Pt-I)-1988
PVC Insulated & Sheathed Telecommunication Cable IS : 13176-1991
PVC Insulated Winding Wires IS : 8783-1991
Motor Vehicle Cable IS : 2465-1984
Flexible Trailing Cable IS : 1026-1984
Crosslinked Polyethylene Cable IS : 7098(Pt-I)-1988
Elastomer Insulated Cable IS : 9968(Pt-I)-1988
Cadmium Copper Wire for Telegraph & Telephone IS : 2665-1964
Polyethylene Insulation Sheath of Electric Cable IS : 6474-1984
PVC Insulation and Sheath of Electric Cable IS : 5831-1984
Conductors for Insulated Electric Cable & Flexible cords IS : 8130-1984
Mild Steel Wires & Formed Wire for Armouring IS : 3975-1988
Shot Firing Cable IS : 5950-1984

Tests performed on Winding Wires :

  • Dimensions
  • Resistance
  • Elongation
  • Springiness
  • Flexibility and Adherence
    a. Mandrel Winding
    b. Jerk Test
    c. Peel Test
  • Resistance to Abrasion
  • Heat Shock
  • Cut-through
  • Solvent Test
  • Break-down Voltage
  • Continuity of Covering
  • Method of Test
  • Method of Test Enameled Round Winding Wire IS:13738
  • Material Specification Enameled Round Winding Wire IS:13730

 

Testing Parameters
  • Safety Requirements
    a. Protection Against Elect. Shock
    b. Input
    c. Temperature Rise
    d. Operation Under Overload Conditions
    e. Elect. Insulation & Leakage Current at Operating Temperature
    f. Moisture Resistance
    g. Electric Strength
    h. Abnormal Operation
    i. Stability & Mechanical Hazards
    j. Mechanical Strength
    k. Construction
    l. Internal Wiring
    m. Components
    n. Cord Grip & Cord Guard
  • o. Terminal for External Conductor
    p. Provision for Earthing
    q. Screw & Connection
    r. Creepage Distance & Clearances
    s. Resistance to Heat, Fire & Tracking
    t. Resistance to Rusting
    u. Endurance
    v. Insulation Resistance
  • Measurement of Heating Up Time
  • Measurement of Sole Plate Temperature
  • Measurement of Temperature Distribution
  • Measurement of Oversuing Temp. & Heating Up Excess Temperature
  • Measurement of Cyclic Fluctuation of Temperature of Hottest Point
  • Measurement of thermostatic Stability
  • Finish
Method of Test
General and Safety Requirement for Household and Similar Electric Appliances IS : 302-1-1979
Particular Requirements Electric Iron IS : 302-2-3-1992
Particular Requirements Electric Immersion Water Heater IS : 302-2-201-1992
IS : 302-2-21-1992
Electroplated Coating of Ni & Cr on Iron & Steel IS : 1068
Material Specification
Electric Iron IS : 366-1991
Electric Immersion Water Heaters IS : 368-1992
Mineral Filled Sheathed Heating Element IS : 4159-1983
Storage Water Heater IS : 2082-1993
Instantaneous Water Heaters IS : 8978-1992
Refrigerators IS : 1476-2000
Tests Performed on Plugs & Sockets :
  • Visual Examination
  • Checking of Dimensions
  • Protection Against Electric Shock
  • Construction
  • Interchangeability
  • Resistance to Aging and Moisture
  • Insulation Resistance and Electric Strength
  • Effectiveness of Contact
  • Temperature Rise
  • Breaking Capacity
  • Endurance Test for Shutters
  • Withdrawal Pull
  • Cord Grip
  • Mechanical Strength
  • Resistance to Heat
  • Screws and Connection
  • Water Absorption
  • Resistance to Rusting
Method of Test
Spec. for Plugs and Socket-Outlets of 250 Volts and Rated Current Up to 16 Amperes IS : 1293 - 1988
Material Specification
Spec for Plugs and Socket-Outlets of 250 Volts and Rated Current Upto 16 Amperes IS : 1293-1988
Tests Performed on Switches :
  • Visual Examination of Marking
  • Protection Against Electric Shock
  • Terminals & Screws
  • Insulation Resistance & Electric Strength
  • Resistance to Humidity
  • Temperature Rise
  • Making & Breaking Capacity
  • Endurance
  • Mechanical Strength
  • Resistance to Heat
  • Creepage Distance & Clearance
  • Resistance to Rusting
  • Water Absorption
  • Maximum Pull
Method of Test

Spec for Switches for Domestic & Similar Purpose

Material Specification

IS : 3854 - 1988
Spec for Switches for Domestic & Similar Purpose IS : 3854 - 1988
Tests Performed on Pressure Sensitive Adhesive PVC Tapes for Electrical Purposes
  • Dimensions
  • Adhesion to Steel
  • Adhesion to Backing
  • Elongation and Tensile Strength
  • Electrical Strength
  • Flammability
  • Electrolytic Corrosion
  • Accelerated Aging
Method of Test
Method of Test for Pressure Sensitive Adhesive tapes for Electrical Purpose IS : 7809 (P-II) - 1977
Material Specification
General Requirements for Pressure Sensitive Adhesive Tapes for Electric Purpose. IS : 7809 (P-I)-1977
Specification for Pressure Sensitive Adhesive Insulating Tapes for IS : 7809(P-III/Sec-I)-1986
Electrical Purpose - Plasticized Polyvinylchloride Tapes with Nonthermosetting Adhesive  
Tests Performed on M.C.B
  • Indelibility of Marking
  • Reliability of Screws, Current Carrying Parts & Connections.
  • Reliability of Terminals for External Conductors.
  • Protection Against Electric Shock.
  • Dielectric Properties
    a. Resistance to Humidity
    b. Insulation Resistance of Main Circuit
    c. Dielectric Strength of Main Circuit.
    d. Dielectric Strength of Auxiliary and Control Circuits.
  • Temperature Rise.
  • Resistance to Mechanical Shock & Impact.
  • Resistance to Heat.
  • Resistance to Abnormal Heat & Fire.
  • Resistance to Rusting.
Method of Test
Electrical Accessories - Circuit Breakers for Over Current Protection for House Hold and Similar Installations IS : 8828-1996
Material Specification
Electrical Accessories - Circuit Breakers for Over Current Protection for Household and Similar Installations IS : 8828-1996
Tests Performed on Aluminium Conductor for Overhead Transmission Purposes.
  • Surface Condition.
  • Test for Ultimate Breaking Load on Stranded Conductor.
  • Measurement of Diameter of Individual Aluminum and Steel Wires.
  • Measurement of Lay Ratio.
  • Breaking Load of Individual Wires.
  • Ductility Test.
  • Wrapping Test.
  • Resistance Test.
  • Galvanizing Test.
Method of Test
Aluminum Conductors for Overhead Transmission Purposes IS : 398 (Part 2) : 1996
Material Specification
Aluminum Conductors for Overhead Transmission Purposes IS : 398 (Part 2) 1996

Tests Performed on Varnish Bonded Glass Fibre Covered Copper Conductor

  • Dimensions
  • Tests for Glass Covering
    • Flexibility
      • Before Heat Aging
      • After Heat Aging
    • Adherence
    • Cure Test
  • Breakdown Test
    • Test at Room Temperature
    • Test at Elevated Temperature
  • Thermal Endurance Tes
Method of Test  
Varnish Bonded Glass Fiber Covered Copper Conductors. Part 2 Rectangular Conductors IS : 4685 (Pt. 2) 1984
Material Specification
Rectangular Conductors for Electrical Machines IS : 6160-1971
Method of Test for Determining Deleterious Substances in Fibrous Insulating Materials. IS : 5596-1970
Guide for Evaluation of Thermal Endurance of Varnish Bonded Glass Fiber Covered Rectangular Copper Conductors. IS : 9778-1981
Drums for Covered Winding Wires & Strips forElectrical Purposes IS: 2069-1981
Instrumentation:
  • Abnormal Test Apparatus.
  • Abrasion Tester.
  • Contact Resistance Temperature Rise Apparatus.
  • Cord Flexing Apparatus.
  • Cord Grip Pull Test Apparatus.
  • Cord Guard Flexural Test Apparatus.
  • Cathode Ray Oscilloscope.
  • Cut Through Test Apparatus.
  • Electrical Test Panel.
  • Endurance Test Apparatus for Iron.
  • Endurance Test Apparatus for Heating Elements/ Immersion Water Heaters.
  • Endurance Test Apparatus for Switches.
  • Endurance Test Apparatus for Shutters.
  • Glow Wire Test Apparatus.
  • High Voltage Test Apparatus (0-100 kV AC).
  • High Voltage Test Apparatus (0-3 kV AC).
  • High Voltage Test Apparatus (0-15 kV AC).
  • High Voltage Test Apparatus (0-2 kV DC).
  • High Voltage Test Apparatus (0-3 kV DC).
  • Ignition Test Apparatus.
  • Isolation Transformer.
  • Kelvin's Double Bridge.
  • Million Mega Ohm Meter.
  • Maximum Pull Test Apparatus.
  • Micrometer.
  • Multimeter.
  • Over Voltage Over Current Test Apparatus.
  • Pin Hole Test Apparatus.
  • Peel Tester.
  • Thermal Stability Test Apparatus.
  • Torsion Test Apparatus.
  • Tumbling Barrel.
  • Tracking Test Apparatus.
  • Universal Tensile Test Apparatus.
  • Vernier Caliper.