Typical Applications
  Oil-filled transformers
  Superconducting coils for cryogenic
  applications
  Motors

Product Description
Thermal Class:    105°

Proven performance in oil-filled applications.

Excellent hydrolytic stability.

Resistant to mechanical and winding abuse due to superior flexibility and abrasion resistance.

Performs well in in-line flattening processes.

Compatible with most varnishes and impregnation compounds.

Retains insulating properties when exposed to cryogenic temperatures.

Compatible with transformer oils.

  

General Information
References Are Provided for Comparative Purposes:
  ROUND
      NEMA: MW 15-C, MW 15-A
      

  SQUARE & RECTANGULAR
      NEMA: MW 18-C, MW 18-A

Availability:
  Round
      Copper
      Single 14 - 23 AWG
      Heavy 4 - 23 AWG 

      Aluminum
      Single 14 - 18 AWG
      Heavy 4 - 18 AWG

 Square
      Copper
      Heavy 1 - 14

      Aluminum
      Heavy 1 - 10 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 >110° C

Thermoplastic Flow
min : 180° C
typical : 230° C

Heat Shock (20% 3x)
½ hr @ 175° C min : no cracks
 

Solderability
@ 510° C (950° F) : 5 seconds
(Flux recommended)

Stress Relief Temp:  150° 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 sides
    min : 1150 gms
    typical : 1600 gms
 

ELECTRICAL 

Dielectric Breakdown
@ RT : 10 kV
@ 105° C : 7 kV

High Voltage Continuity
NEMA @ 1500 V DC : 5 faults/100 feet max
Typical @ 3000 V DC : 0-1 faults/100 feet

CHEMICAL 

Completeness of Cure
5 min boil 70/30
Alcohol/Toluene : Pass

Transformer Oil System
Test in Sealed Tubes
After 168 hrs @ 150° C :
    Retained Flexibility - 1x OK
    Retained Dielectric - 90% of
          original Breakdown Voltage

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 Formvar