Bharat Insulation Company (BIC)

Paper/Polyester Film Covered Copper & Aluminium Conductors

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Paper/Polyester Film Covered Copper & Aluminium Conductors

Bharat Insulation Company specializes in the manufacturing, supply, and export of a wide range of paper-covered and polyester film-covered copper & aluminium conductors, designed to meet the stringent demands of the electrical and transformer industries. Our conductors are available in both round and rectangular profiles, made from high-conductivity copper & aluminium, and insulated with premium materials such as electrical-grade kraft paper, polyester film, Nomex, mica glass, and aromatic polyimide films.

Paper/Polyester Film Covered Copper & Aluminium Conductors
What are Paper/Polyester Film Covered Copper & Aluminium Conductors?

Offered in thermal classes ranging from 105°C to 240°C, these conductors comply with key industry standards including IS:13730, IS:7404, IS:6162, MW-60, and MW-61. They are ideal for use in motors, transformers, reactors, and other high-temperature electrical equipment. With customizable insulation grades such as DPC, TPC, MPC, and A1 to B5, and cross-sectional dimensions ranging from 1.00 mm² to 100.00 mm², we ensure high reliability, durability, and performance across all applications.

What are they?

These conductors are bare copper & aluminium wires wrapped with insulating materials such as kraft paper, polyester film, or high-grade polyimide films. Their primary function is to prevent short circuits, manage heat build-up, and maintain stable electrical performance over extended periods.

  • Paper-insulated copper conductors are valued for their cost-effectiveness and high dielectric strength.
  • Polyester film-insulated wires offer enhanced thermal resistance and are well-suited for compact winding applications.

Details of our Products with Range, Thermal Class, Insulation Grade & Specifications

Paper Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper IS-13730 Part-27 mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.20 1.50
Round Copper IS-7404 Part- I mm 1.00 6.00 0.20 0.50
Rectangular Aluminium IS-6162 Part-II mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.20 1.50
Round Aluminium IS-6162 Part-I mm 1.00 6.00 0.20 0.50
Insulation Electrical Grade Insulating Kraft Paper
Insulation Grade DPC/TPC/MPC
Thermal Class 105 ºC
Types of PCCA and PICC Conductors
. Electrical Grade Insulating Kraft Paper Covered Conductors (DPC/TPC/MPC)
  • Used in oil-filled transformers and switchgears
  • Suitable for 105°C thermal class applications
  • Available in copper & aluminium, round or rectangular
  • Insulation - Kraft paper (IS:13730 / IS:7404 / IS:6162)
. Insulating Kraft / Crepe Paper Covered Conductors
  • Used in dry-type transformers and traction motors
  • Suitable for 105°C thermal class systems
  • Only rectangular types are offered with a 2/3 bunch covering
  • Insulation - Kraft or Crepe (IS:13730 / IS:7404 / IS:6162)
. Aromatic Polyamide (Nomex) Covered Conductors
  • Used in high-performance transformer windings
  • Suitable for 220°C thermal class insulation
  • Available in copper & aluminium, both round and rectangular
  • Insulation - Aromatic Polyamide – Grades A1 to A5, B1 to B5
. Epoxy / Glass Mica Covered Conductors
  • Used in traction motors and dry-type transformers
  • Suitable for 200°C thermal class insulation
  • Customizable for both copper & aluminium types
  • Insulation - Epoxy/Glass Mica as per customer specification
. Polyester Film Covered Conductors
  • Common in medium-duty transformers and coils
  • Suitable for 155°C thermal class applications
  • Available in copper & aluminium, round or rectangular
  • Insulation - Polyester Film as per customer requirement
. Aromatic Polyimide / Apical Film Covered Conductors
  • Used in high-reliability electrical environments
  • Suitable for 240°C thermal class insulation
  • Round and rectangular copper & aluminium as per spec
  • Insulation - Polyimide / Apical Film (IS:13730 Part-43/44)
Enamelled Round Copper Winding Wires
Why Choose Paper and Polyester Film Covered Conductors?
. Enhanced Electrical Insulation
  • Paper-insulated copper conductors are ideal for applications requiring strong dielectric properties. Electrical-grade kraft paper-covered aluminium wire offers robust insulation that resists thermal degradation and moisture intrusion.
. Superior Thermal Performance
  • These conductors are available in various thermal classes, ranging from 105°C to 240°C, suitable for heavy-duty industrial equipment.
. Customisation and Versatility
  • Whether you're designing for compact transformers or high-efficiency motors, dual-insulation copper conductors offer design flexibility with a wide range of dimensions and insulation thicknesses.
Aromatic Polyamide/ Nomex R (Dupont) Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper MW-60 C mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.10 1.00
Round Copper MW-61 C mm 2.00 6.00 As per Customer
Rectangular Aluminium MW-60 A mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.10 1.00
Round Aluminium MW-61 A mm 2.00 6.00 As per Customer
Insulation Aromatic Polyamide
Insulation Grade A1 to A5 & B1 to B5
Thermal Class 220ºC
Epoxy/Glass Mica Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper As per Customer mm2 10.00 60.00 5.00 12.00 2.00 5.00 As per Customer
Round Copper As per Customer mm 2.00 6.00 As per Customer
Rectangular Aluminium As per Customer mm2 10.00 60.00 5.00 12.00 2.00 5.00 As per Customer
Round Aluminium As per Customer mm 2.00 6.00 As per Customer
Insulation Epoxy/Glass Mica
Insulation Grade As per Customer
Thermal Class 200ºC
Polyester Film Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper As per Customer mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.20 0.50
Round Copper As per Customer mm 2.00 8.00 0.20 0.50
Rectangular Aluminium As per Customer mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.20 0.50
Round Aluminium As per Customer mm 2.00 8.00 0.20 0.50
Insulation Polyester Film
Insulation Grade As per Customer
Thermal Class 155 ºC
Aromatic Polyimide / Apical Film Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper IS-13730 Part-44 mm2 10.00 50.00 5.00 10.00 2.00 5.00 As per Customer
Round Copper IS-13730 Part-43 mm 2.00 5.00 As per Customer
Rectangular Aluminium As per Customer mm2 10.00 50.00 5.00 10.00 2.00 5.00 As per Customer
Round Aluminium As per Customer mm 2.00 5.00 As per Customer
Insulation Aromatic Polyimide / Apical film
Insulation Grade As per Customer
Thermal Class 240 ºC
Insulating Kraft / Crepe Paper Covered Conductors Base Metal Specification Unit of Measure Range Dimensions (Width) Dimension (Thickness) Dimension Insulation Thickness
Min Max Min (mm) Max (mm) Min (mm) Max (mm) Min (mm) Max (mm)
Rectangular Copper IS-13730 Part-27 mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.25 2.00
Round Copper IS-7404 Part- I mm 2.00 5.00 0.25 4.00
Rectangular Aluminium IS-6162 Part-II mm2 10.00 100.00 5.00 20.00 2.00 5.00 0.25 2.00
Round Aluminium IS-6162 Part-I mm 2.00 5.00 0.25 4.00
Insulation Insulating Kraft / Crepe Paper
Insulation Grade 2/3 Bunch (Only For Rectangular)
Thermal Class 105 ºC
Advantages of our PCCA and PICC Conductors
  • High dielectric strength
  • Moisture and chemical resistance
  • Mechanical flexibility
  • Long service life
  • Excellent thermal stability
Frequently Asked Questions (FAQs)

Paper covered conductors are mainly used in transformers, reactors, and motors, where high electrical insulation and thermal resistance are essential.

Yes, polyester film insulation wires are suitable for medium- to high-voltage winding applications, especially where thermal endurance and mechanical durability are required.

PCCA conductors: Paper Covered Copper Aluminium Conductors

PICC wires: Paper Insulated Covered Conductors – primarily copper-based

Both are designed for thermal insulation and dielectric performance but vary in base metal and specific applications.

Absolutely. At Bharat Insulation Company, we offer customised conductor dimensions and insulation grades, including dual insulation copper conductors, to meet unique design requirements.

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