Typical Applications   Inverter-Duty motors   High voltage motors   High frequency transformers    Product Description Thermal Class:  200° (copper) Resistant to voltage stresses generated by high frequency, rapid rise time, voltage spikes typically introduced by IGBT-type inverters. Motor life is increased significantly over standard MW-35C magnet wire under these voltage stresses and across a wide temperature range. Improved insulation protection against transient spikes, high frequencies, elevated voltage levels, and short rise time pulses without increasing insulation thickness. Excellent resistance to thermoplastic flow (cut-through), abrasion and heat shock. Excellent resistance to heat and solvent shock conditions encountered in varnishing and encapsulating processes.   GENERAL INFORMATION References Are Provided for Comparative Purposes: Round   NEMA: Copper MW 35-C, MW 73-C UL: File # E37683 Availability:   Round       Copper       Heavy   12 - 24 AWG    Rectangular   Copper (Heavy)       Min Width .081"   Max Width .750"   Min Thickness .030"   Max Thickness .292"   Typical Properties This data is typical of 18 AWG copper, heavy build insulation only. It is not intended to be used to create specification limits. THERMAL   Thermal Endurance 20,000 hr Life >200°C Thermoplastic Flow min : 300°C typical : 350°C Heat Shock (20% 3x) ½ hr @ 220°C min : no cracks ½ hr @ 240°C min : no cracks Solderability Not designed to be self-solderable Stress Relief Temp:  160°C MECHANICAL  Mandrel Flexibility After Elongation     min : 20% 3x OK     typical : 30% 1x OK After Snap     min : 3x OK     typical : 1x OK   Unilateral Scrape Avg of 3 tests (taken at 120° increments)     min : 1150 gms     typical : 1700 gms   Dynamic C of F    typical: 0.06  ELECTRICAL  Pulse Endurance Test 20,000 Hz, 2000 V, 0.025 microsecond rise time 150°C, 50% Duty Cycle - Twisted Pairs    18 HTAIH Reference = 600 seconds    18 HTAIHSD Reference = 80,000 seconds Pulse Endurance Index (PEI) > 100 Life of Product/Life of Same Size and Build MW-35 (Reference) Dielectric Breakdown NEMA min: 5.7 kV    typical: 11 kV Corona Inception Voltage typical: 580V High Voltage Continuity NEMA @ 1500 V DC : 5 faults/100 feet max Typical @ 3000 V DC : 0-1 faults/100 feet CHEMICAL  Retained Dielectric After 72 hrs exposure to R-22 +150°C conditioning: NEMA    min: 5.7 kV                 typical: 10.7 kV   R-22 Extractables:  0.8%   Resistance to Solvents after 24 hrs @ RT : Pass Solvents Including: Xylene, 50/50 Cellosolve/Xylene, Perchloroethylene, 1% NaOH, 28% Sulfuric Acid, Gasohol  Procedure followed to determine published values: NEMA: National Electrical Manufacturers Association JIS: Japanese Industrial Standards IEC: International Electrotechnical Commission ASTM: American Society for Testing and Materials Download pdf Spec Sheet Pulse Shield SD