SynChem – Resins & Varnishes Voltatex® 4200 1-component-resin

Voltatex® 4200 is a low emission, ready-to-use impregnating 1K dip resin, based on unsaturated polyesterimide resins.

  • single component
  • free of styrene and vinyltoluene
  • low emission, VOC-free
  • resistant to refrigerants
  • not classified as dangerous in the meaning of transport regulations

The cured resin compound is characterized by:

  •  high thermal and mechanical strength, especially under long-term stress
  • good resistance against solvent gases
  • good adhesion
Download datasheet

Application

  • hermetic motors
  • transformers, especially with thick wires and shaped conductors
  • suitable for: Insulation systems up to thermal class 200 (N)

Standards

  • UL-File-Nr.: E 101752 (M) Underwriters Laboritories Inc., USA
  • Isolation-system temperature of thermal class 200 (N) acc. to IEC 60085:2007
  • Temperature Index in acc. with IEC 60455-3-5, Type 200, Testing Method in acc. with IEC 60216
  • RoHS-compliant 2011/65/EU
  • Reach-compliant 2006/121/EU
  • polybromited Diphenylether 2003/11/EU
  • Temperature class acc. to UL 1446:
Twisted Pair ASTM D2307 MW 30:200
    MW 35:220
Helical Coil ASTM D2519 MW 30:240
    MW 35:220

Insulation-system acc. to UL 1446 (IEC 61858):

Class 130 C190HE
  R150HE
  Z130HE
  Z150HE
Class 155 C290HE
  CZ255HE
  R201HE
  R203HE
  Z200HE
Class 180 R342HE
  R342HE2

Delivery forms

The dip resin is delivered in 25 kg and 200 kg one-way-cans. Additionally 1000 kg containers (returnable) are available (not for oversea export).

Storage

The resin can be stored for up to 6 months at max. 25 °C if sealed correctly in original containers. We recommend a storage at 20-25 °C. Opened containers have to be resealed
and protected against direct daylight!

Hardening

Voltatex® 4200 is a low emission product; nevertheless to minimize evaporation of reactive components while curing the impregnated objects
should be heated up to the curing temperature in the shortest possible time. The air flow in the curing zone should be kept to the minimum permitted by safety considerations.

Curing times (Dip & Bake process):
at 130 °C: 2h
at 150 °C: 1 h

In the cooling pool, the temperature change should be limited to max. 5 °C.

Protection

Voltatex® 4200 is biologically inactive and safe to health. Implement normal protective measures when processing the liquid dip resin: See the Material safety data sheet (MSDS).

Cleaning

Once cured Voltatex® 4200 is almost insoluble. Therefore, application equipment should be cleaned regularly with cleaner Voltatex® T050 or T060.
All equipment cleaning and maintenance should be carried out in accordance with the equipment manufacturer’s instructions.

Processing

The impregnating resin can be applied by using

  • all kind of conventional dip & bake equipment
  • continuous and vacuum dip processes
  • VPI process
  • Trickling machines

Unlimited tank stability with resin Voltatex® 4200 can be achieved as long as the material is kept below 25 °C and at least 20 % of the tank cont ent is used and replaced with fresh resin per month.

Technical data

Mechanical
Property Unit of measure Values  Test method 
Bond strength of twisted coils room temperature  325 ± 40 IEC 60455-2 test method A acc. IEC 61033
Bond strength of twisted coils 130 °C  90 ± 20 IEC 60455-2 test method A acc. IEC 61033
Bond strength of twisted coils 155 °C  80 ± 10 IEC 60455-2 test method A acc. IEC 61033
Bond strength of twisted coils 180 °C  52 ± 12 IEC 60455-2 test method A acc. IEC 61033
Shore D hardness room temperature    77 ± 5 IEC 60455-2 test method acc. ISO 868
Thermal
Property Unit of measure Bedingungen  Value  Test method 
Temperature index  °C    type 220 IEC 60455 test method acc. IEC 60216
Bond strength IEC 60317-8  °C  MW 30 238 IEC 61033, method B, final point 22 N
Bond strength IEC 60317-13  °C  MW 35 229 IEC 61033, method B, final point 22 N
Testing voltage IEC 60317-8  °C  MW 30 212 IEC 60172
Testing voltage IEC 60317-13  °C  MW 35 222 IEC 60172
Heat conductivity  W(m*k)^-1  at 23 °C, 130 °C, 155 °C, 180 °C 0.22 ASTM E1530
Chemical
Property Conditions  Values  Test method 
Resistance  distilled water, transformer oil resistant Factory standard Energy Solutions 017
Resistance  Hexane, methanol, acetone, xylol resistant Factory Standard Energy Solutions 019
Liquid phase
Property Unit of measure Values  Test method 
Viscosity  mPas  1800-2700 at 25 °C acc. DIN 53019
Gel time  min  7-13 / 10±3 typ. value
Reaction time  min  12±4 typ. value
Curing time  min  120 at 150 °C - dipping method
Curing time  min  60 at 130 °C - dipping method
Impact on enamelled wires    compatible with all common enamelled wires  
Electrical
Property Unit of measure Values  Test method 
Dielectric strength at 23 °C after 96 h storage at 90 % r.h.  kV/mm  40-90 IEC 60455-2 test method acc. IEC 60243-1
Dielectric strength at 23 °C and 50 % r.h.  kV/mm  70-90 IEC 60455-2 test method acc. IEC 60243-1
Dielectric strength at 155 °C  kV/mm  65-105 IEC 60455-2 test method acc. IEC 60243-1
Dielectric strength at 105 °C after 168 h oil immersion  kV/mm  85-130 IEC 60455-2 test method acc. IEC 60243-1
Specific volume resistance at 155 °C  Ω*cm  10^10-10^12 acc. IEC 60455-2 test method acc. IEC 60093
Specific volume resistance at 180 °C  Ω*cm  10^9-10^11 acc. IEC 60455-2 test method acc. IEC 60093
Specific volume resistance at 200 °C  Ω*cm  10^9-10^11 acc. IEC 60455-2 test method acc. IEC 60093
Specific volume resistance after 7 d water immersion  Ω*cm  10^14-10^16 acc. IEC 60455-2 test method acc. IEC 60093