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Paper Phenolic Laminates

Paper Phenolic Laminate sheets are made from layers of paper, impregnated with specifically formulated phenolic resins, bonded together under heat and pressure to produce a thermoset composite. Both paper and resins can be modified to change the finished properties of the final laminate.

Offers enhanced mechanical, electrical, electrostatic dissipative or fire performance.

The properties and cost-effectiveness of these products often make them insulators of choice in low/high-voltage, dry service electrical equipment.




IP-5001
Grade P1
Color Blackish Voilet/Blackish Brown
Thickness Range 0.8mm - 100mm
Characteristics - Primarily for mechanical applications with moderate electrical insulation resistance.
- Suitable for low-tension and non humid conditions.
Applications - Battery Eliminator Transformer & Choke Bobbin
- Tube Light ends
- Condenser Mountings
- Control Panel
- Drill back-up & Drill entry etc.
IP-5002
Grade P-2
Color Blackish Red
Thickness Range 0.8mm - 100mm
Characteristics - Delivers a combination of superior electrical and mechanical properties.

- Ideal for general electrical applications in dry atmospheric conditions or in oil.
Applications - Transformer covers
- C.B. Handles & Side frames
- Distribution boards
- Fuse Holder base etc.


IP-5003
Grade P-3
Color Natural Translucent or Opaque
Thickness Range 0.8mm - 100mm
Characteristics - Possesses very good electrical properties even under humid conditions and adequate mechanical properties like low water absorption, machining and hot punching.
- Suitable for high tension electrical applications at power frequencies.
Applications - Transformers and Choke Bobbins
- Relay Spacers
- HV Transformer
- Tap Changers
- Grid covers
- Selector Band insulation etc.
IP-5004
Grade P-4
Color Natural Translucent or Opaque
Thickness Range 0.8mm - 100mm
Characteristics - Possesses exceptional electrical properties even under humid conditions, very low water
- Absorption and excellent hot punching properties.
- Specially made for high frequency applications.
Applications - Cross bar switches
- Meter Fuses
- Band change
- Switch insulation in X-ray equipments etc.



Technical Data Sheet

PropertiesUnit Grade Paper Phenolic Paper Phenolic Paper Phenolic Paper Phenolic Paper Phenolic Paper Phenolic
IS 2036:1995 P1P2P3P4P3P4
NEMA LI 1-1983XPXXPXXXPXXXXPFR 1FR 2
IELIP 5001 IP 5002IP 5003IP 5004IP - 222IP - 555
Mechanical PropertiesTest Applicable for Thickkness IEL AVG. VALUE LIMITING VALUE IEL AVG. VALUE LIMITING VALUE IEL AVG. VALUE LIMITING VALUE IEL AVG. VALUE LIMITING VALUE IEL AVG. VALUE LIMITING VALUE IEL AVG. VALUE LIMITING VALUE
Cross Breaking Strength Mpa (min) Not less than 1.6 mm 140 130 ( min) 140 130 ( min) 100 85 ( min) 100 70 ( min) 100 85 ( min) 90 70 ( min)
Tensile Strength
Shear Strength Mpa (min) Less than 1.6 mm 85 75(min) 80 70(min) 65 60 (min) 65 60 (min) 65 60 (min) 65 60 (min)
Electrical Properties
Electrical Strength (Flatwise) MV/m Not more than 3.00 mm NA Complies Complies Complies Complies Complies Complies Complies Complies Complies Complies
Electrical Strength (Edgewise) KV More than 3.00 mm - Complies 20 (min) Complies 25 (min) Complies 30 (min) Complies 25 (min) Complies 30 (min)
Insulation Resistance M.ohms Not more than 25 mm 5 1 (min) 15 10 (min) 2500 1000 (min) 35000 30000 (min) 3000 1000 (min) 40000 30000 (min)
Water Absorption (1.6 mm) mg (all thickness) 300 478 (max) 280 426 (max) 50 76 (max) 35 43 (max) 50 76 (max) 35 43 (max)
Specific Gravity Grams/CC 1.34 1.34 1.36 1.36 1.35 1.35 1.34 1.34 1.35 1.35 1.34 1.34
Flame Resistance Class UL-94 N A N A N A N A N A N A N A N A V-1 V-1 V 0 V-1