2450 insultion Impregnated cloths Silicone varnished glass cloth

  insulation Impregnated cloths Silicone varnished glass cloth

Properties

Values

Nominal thickness(mm)

0.10

0.12

0.15

0.18

0.20

0.25

Thickness tolerance(mm)

±0.010

±0.012

±0.015

±0.018

±0.020

±0.025

Anti- hydrolyze

The surface of the varnish will not be destroyed at the temperature of 105 ±2°C for 24h

Effect on oil

The acidity of the oil is not large than 0.5 in the NO 45 transformer oil at the temperature of 105 ±2°C for 72h

Effect by oil

The surface of the varnish will not be destroyed in the NO 45 transformer oil at the temperature of 105 ±2°C for 48h

Elongation

Kgf (N)/10mm

Vertical minimum

7.1 (70)

9.2 (90)

10.2(100)

10.7(105)

11.2(110)

12.2(120)

Parallel minimum

4.1 (40)

5.1 (50)

6.1 (60)

6.6 (65)

7.1 (70)

8.2 (80)

45^o     minimum

4.1 (40)

6.1 (60)

6.6 (65)

6.6 (65)

7.1 (70)

8.2 (80)

The joint of slanting cut minimum

joint of the glass cloth before impregnating varnish

2.0 (20)

2.6 (25)

3.1 (30)

3.1 (30)

3.6 (35)

3.6 (35)

joint of the glass cloth after impregnating varnish

2.0 (20)

2.0 (20)

2.0 (20)

3.1 (30)

3.1 (30)

3.1 (30)

Elongate to 10% (45^O)

0.2~1.2 (2~12)

0.2~1.2 (2~12)

0.3~1.5 (3~15)

0.3~1.5 (3~15)

0.4~1.6 (4~16)

0.5~2.0 (5~20)

Extending rate when breaking down .% minimum

Vertical

1.5

1.5

2.0

2.0

2.5

3.0

45^o

15

15

15

20

20

20

Edge Laminating strength ,kgf(N),minimum

Vertical

0.5 (5)

0.6 (6)

0.8 (7.5)

1.0 (10)

2.0 (20)

2.6 (25)

45^o

5.1 (50)

6.1 (60)

7.7 (75)

8.2 (80)

9.2 (90)

12.2 (120)

Breakdown voltage kv ,minimum

Room temperature

5.0

6.0

7.0

7.5

8.0

9.0

High temperature (180 ± 2°C)

2.0

2.5

3.0

3.0

3.0

3.5

Elongate to 3% (45^o)

2.5

2.5

3.5

3.5

3.5

3.5

Effect by damp (23 ±2°C)

2.0

2.2

2.8

2.8

2.8

2.8