SynTherm® – Insulating Materials SynTherm® YT56 DDP

SynTherm® YT56 DDP is a synthetic medium density electro-insulation paper constructed of a calendered, aromatic polyamide fibride flock composition. Both sides of the paper are printed with a B-stage epoxy resin in a diamond dotted pattern.

SynTherm® YT56 DDP is a synthetic medium density electro insulation paper constructed of a calendered, aromatic polyamide fibride flock composition. Both sides of the paper are printed with a B-stage epoxy resin in a diamond dotted pattern.

The base material SynTherm® YT56 is a Class H (180 °C) insulating material. Its mechanical, thermal and electrical properties are between SynTherm® YT510 and SynTherm® YT511.

Temperatures over 200 °C only slightly influence its electrical properties. The good mechanical properties can be extrapolated to significantly higher temperatures. SynTherm® YT56 is also suitable for use at temperatures to -190 °C due to its polymer-structure.

It has a high short-term dielectric strength. SynTherm® YT56 is compatible with all classes of common resins, varnishes, adhesives as well as transformer liquids, lubricants, and cooling agents. Common solvents may lead to slight reversible moisture expansion. SynTherm® YT56 has low flammability (UL 94V-0) and very high resistance to beta and gamma radiation.

Download datasheet

Application

SynTherm® YT56 DDP is designed for cost critical applications which require a moderate mechanical and electrical strength.
SynTherm® YT56 DDP is used as layer insulation in transformers.

Standards

  • Insulating material class F (155 °C). Base material class H (180 °C)
  • The base material is UL listed (RTI mech. + electr. 210 °C)
  • RoHS compliant acc. to 2011/65/EU

Delivery forms

Film thickness in μm:
130, 180, 250, 300, 510, 760

SynTherm® YT56 DDP is available:
- in tapes: depending on material thickness on request
                 beginning at 6mm (thin material)
- in rolls:   1000 mm

Feathering:
- depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
- 10 mm up to 240 mm tape-width, thickness on request

Base

Calandered, aromatic polyamide fibride flock composition with diamond dotted B-stage resin on both sides.

Technical data

Mechanical
Property Unit of measure             Test method 
Nominal thickness  μm  130 180 250 300 510 760  
Typical thickness  µm  130 180 250 300 500 760 GB/T12914-2008
Specific weight  g/m²  86 125 172 245 342 532 GB/T451.2-2002
Tensile strength longitudinal  N/cm  100 155 200 300 320 420 GB/T12914-2008
Tensile strength transversal  N/cm  40 60 80 145 150 200 GB/T12914-2008
Elongation at break longitudinal  8 9 9.5 12 11 10 GB/T12914-2008
Elongation at break transversal  8.5 9.5 10 13 11.5 10 GB/T12914-2008
Elmendorf tear strength longitudinal  1.5 2.5 3 5.5 11.5 N/A GB/T455-2002
Elmendorf tear strength transversal  3.5 5 6 7 14.5 N/A GB/T455-2002
Properties of B-stage resin
Property Unit of measure          
Thickness increase (one side)  µm  10±15 %        
Basic weight increase (both sides)  g/m²  5±10 %        
Curing conditions  1 3 10 20 30
Curing conditions  °C  130 120 110 100 90
Shelf life    6 months after production        
Electrical
Property Unit of measure             Test method 
Nominal thickness  μm  130 180 250 300 510 760  
Field intensity  kV/mm  11 11 12 15 13 13 GB/T1408.1-2006