No

parameter

unit

specification

1

Density(at 20±2)

g/cm³

1.92

2

Bending strength

Mpa

320

3

Compression strength

Mpa

200

4

Shearing strength

Mpa

32

5

Dielectric loss factor(50Hz)

0.02

6

Dielectric constant

3-6

7

Volume resistivity

At normal conditions

Ω.m

10¹⁰

10⁸

After immersion in water

8

Insulation resistance along laminas

At normal conditions

Ω

After immersion in water

9

Surface withstand voltage after wetting in normal air for 1 min with gap between electrodes of 30mm

Kv

14

10

Withstand voltage across laminalδ3mm

In transformer oil, at 90±2,5 min   δ3mm

Kv

18

20

11

Withstand voltage along laminas in transformer oil,at at 90±2,5 min,between gap of 25mm

Kv

25

50

75

12

Insulation resistance

Ω.m

5*10⁴

13

Power frequency withstanding voltage: in transformer oil,5min,between gap of 100mm .the gap on customerss order

kv

85