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SPECIFICATION STANDARD |
IEC-60317-17 NEMA MW-18C |
IEC-60317-18 | IEC-60317-16 | IEC-60317-28 | IEC-60317-29/ NEMA MW-36C |
IEC-60317-30 IEC-60317-47 NEMA MW-20C |
IEC-60317-58 draft) |
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THERMAL CLASS | 105 | 120 | 155 | 180 | 200 | 220/240 | 220 | 120 | 180 |
Chemical base of base coat | Polyvinyl Acetal | Polyvinyl Acetal | Polyester | Polyesterimide | Polyesterimide | Polyimide | Polyamide-imide | Polyvinyl Acetal | Polyesterimide |
Chemical base of Top coat | Polyamide-imide | Epoxy-Bond coat | Epoxy-Bond coat | ||||||
Range of Wire (Diameter) | Cross section area up to 80 sp.mm, Thickness : from 1.3-8 mm, Width : from 2.0-16 mm | ||||||||
Insulation Range | IEC Grade 1:0.060-0.110, IEC Grade 2:0.120-0.179; NEMA Grade Heavy : Increase in thickness : 0.076-0.127, Grade Quadruple : increase in thickness : 0.127-0.178 mm |
In addition to base coat increase in dimensions, additional bond coat increase in thickness of 0.030-.0.050 mm |
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Standard colour | Golden Yellow | Golden Yellow | Brown | Brown | Brown | Light Brown | Light Brown | Golden Yellow | Brown |
TECHNICAL PROPERTIES AS PER IEC-60317-0-2 |
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Flexibility & Adherence | |||||||||
:Mandrel Bending on thickness on width |
2-3 t & 3-4 W | 2-3 t & 3-4 W | 3-4 t & 4-6 W | 3-4 t & 4-6 W | 3-4 t & 4-6 W | 3-4 t & 4-6 W | 3-4 t & 4-6 W | 2-3 t & 3-4 W | 3-4 t & 4-6 W |
:Adherence (no crack after stretching %) |
15 | 15 | 15 | 15 | 15 | 10 | 15 | 15 | 15 |
Heat Shock No cracks after bending on thickness/ Temperature °C |
2-3 t/155 | 2-3 t/155 | 6 t/175 | 6 t/200 | 6 t/200 | 6 t/260 | 6 t/240 | 2-3 t/155 | 6 t/200 |
Break down voltage at Room temp. (minimum) Volts |
Grade 1 : > 1000, Grade 2: >2000 | ||||||||
Resistance to hot transformer oil | Excellent | Excellent | Not applicable | Excellent | Excellent | Not applicable | Not applicable | Excellent | Excellent |
Heat Bonding temperature/Time | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | 110 C/48 h or 120 C/24 h | |
SPECIAL CHARACTERSISTICS & APPLICATION |
High mechanical strength, strong adhesion of enamel to copper conductor, Excellent hydrolysis & oil resistance |
Good thermal, and overall good mechanical, electrical and chemical properties |
High thermal, and overall good mechanical, electrical and chemical resistance |
High thermal, electrical and mechanical, properties, excellent heat shock and burnout |
Very high thermal properties |
Very high thermal properties |
Bondable coating with excellent mechanical properties |
Bondable coating with excellent thermal properties |
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Delivery Spools | Please refer to DELIVERY SPOOLS for Sizes & Respective Spool Types | ||||||||
Special Notes | Oil filled power & distribution transformers, Inductance coils, etc. |
Oil filled large transformers Loco transformers, chokes & Inductance coils, etc. |
Large rotating Machines such as: motors,DC motors,High Voltage motors, etc. |
Large and special electrical machines such as: generators, alternators, Motors, HV motors, Dry type transformers, Inductor coils, etc. |
Special electrical machine and magnet coils for aerospace industry |
Large and special electrical machines such as: generators, Motors,HV motors, Dry type transformers, Inductor coils,etc. |
Oil filled large transformers, Loco transformers,chokes & Inductance coils, particularly with improved mechanical strength(hoop stress) to resist igh short circuit currents. |