End fills
This diagram displays the use of CORQUIN od CEQUIN II as end fills or outer wrapping in low voltage coils in dry-type transformers.
CORQUIN is designed for end fills in dry-type transformers. It has the same composition as the CEQUIN papers, but due to a different processing, the CORQUIN papers have a lower density than the CEQUIN papers. It's general characteristics can be summarized with:
- Excellent conformability
- Slightly compressible
- Excellent absorption of resins and varnish
The application of choice for CORQUIN is its use for end fills in the low voltage coil of dry-type transformer. In contrast to polyamide laminates the structure of CORQUIN adopts easily to the surface on which it is applied and follows it's shape. Being slightly compressible, CORQUIN also allows the compensation of minor variations in the interlayer spacing. CORQUIN's excellent absorption of resins leads to leads to a complete saturation of the end fill in the vacuum-pressure-impregnation process improving the mechanical performance of the low voltage coil.
Properties of CORQUIN (see Data Sheet below)
| Properties | Unit | CORQUIN 18mils | CORQUIN 23mils | CORQUIN 30mils | CORQUIN II 36mils |
| Thickness | mm | 0,46 | 0,58 | 0,76 | 0,92 |
| Dielectric Breakdown Strength | kV | 2,3 | 2,3 | 3,2 | 5 |
| Dielectric Breakdown Strength | kv/mm | 5 | 4 | 5 | 5,5 |
| Dielectric Breakdown Strength | vpm | 128 | 100 | 107 | 139 |
| Basis Weight | g/m2 | 434 | 543 | 760 | 949 |
| Tensil Strength MD | kN/m | 5,3 | 6,0 | 7,4 | 13 |
| Tensil Strength CD | kn/m | 4,0 | 4,0 | 5,8 | 6,0 |
| Elongation to Break MD | % | 1 | 1 | 1 | 1,2 |
| Elongation to Break CD | % | 1 | 1 | 1 | 1 |
| Elmendorf Tear MD | gramm | 368 | 360 | 512 | 600 |
| Elmendorf Tear CD | gramm | 432 | 360 | 560 | 800 |
| Moisture Content | % | 1 | 1 | 1 | <2 |
Documentation
- » Corquin 18-23-30mils data sheet [71 KB]
- » Corquin 36mils data sheet [69 KB]
- » Corquin MSDS rev1 ital [84 KB]
- » Corquin MSDS rev2 eng [83 KB]
Selection of applicable UL systems
Logo UL
- » UL System 155°C - DV-155J Table6 [23 KB]
- » UL System 155°C - QT-155 PLUS [31 KB]
- » UL System 155°C - QT155TQ [681 KB]
- » UL System 180°C - QT180Plus [7 KB]
- » UL System 180°C - QT180T [694 KB]
- » UL System 180°C - QTR180B [23 KB]
- » UL System 200°C - QT200 [752 KB]
- » UL System 220°C - IPT-220 Table1 [8 KB]
- » UL System 220°C - IPT-220 Table2 [28 KB]
Last Modification Freitag, 7. Mai 2010 at 22:30:30