Winding wire SHTherm® 220

  • Enamelled round cu.wire, thermo-resistant,
  • Insulated with polyamide-Imide
  • Class 220

"SHTherm® 220" is a highly thermo-resistant enamelled copper wire with heat performance class R with superior thermal, chemical and mechanical resistance. It is used for special applications requiring the following criteria: very high permanent thermal resistance and short-time thermal overload, very good resistance to aggressive mediums in liquid or gas form.

"SHTherm® 220" is ideally suited for use in special safety-relevant and electrical life support equipment. Sophisticated process  technology and process setting ensure easy mouldability, good elongation and constant insulation properties of these wires.

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Application

Control gears, electric motors, electrical tools, pump drives, refrigerators, special applications in the medical field

Standards

IEC / DIN EN 60317-26
UL approved

Delivery forms

Grade 1: on request
Grade 2: on request

Technical data

Typical properties of enamelled round copper wire 0.500 mm, with insulation film grade 1

Mechanical
Property Unit of measure Sollwert  Istwert (typ.) 
Outer diameter with varnish  mm  min. 0.524 - max. 0.544 as set value
Bare wire diameter  mm  0.495-0.505 as set value
Elongation and adhesion    mandrel diameter: 0.500 mm 1 x d /10 % pre-elongation
Scrape resistance  N  ≥ 3.950 ≥ 7.500
Pencil hardness of varnish    / 4H - 6H
Elongation at break  %  ≥ 28 ≥ 38
Coefficient of friction  µ  / ≤ 0.140

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.
Thermal
Property Unit of measure Sollwert  Istwert (typ.) 
Temperature index TI    220 220
Cut through temperature (pre-heated block)  °C  350 ≥ 400
Dielectric loss factor (bending point)  (°C) (tan δ)  / ≥ 240
Heat shock at 220 °C (no cracks in varnish coat after winding)    mandrel diameter: 1.120 mm 1 x d /10 % pre-elongation
Solderability    no no

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.
Electrical
Property Unit of measure Sollwert  Istwert (typ.) 
Dielectric strength RT  kV  ≥ 2.4 (twist) ≥ 5 (cylinder)
High voltage discontiniuties 750V    ≤ 10 on 30 m ≤ 7 on 100 m
Electrical conductivity  MS/m  58 - 59 ≥ 58.5

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.
Chemical
Property Sollwert  Istwert (typ.) 
Pencil hardness (storage in standard solvent ½ h / 60 °C)  min. H 4H - 6H
Pencil hardness (storage in alcohol ½ h / 60 °C)  min. H 4H - 6H
Resistance to commercial impregnants^(1)  / yes
Resistance to commercial refrigerants^(1)  / yes
Resistance to dry transformer oils^(1)  / yes
Resistance to hydraulic oils^(1)  / yes

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.