ROUND LAMINATED ROLLED TUBES

Types

Composition

Operating temperature range, оС

Applications and distinguishing characteristics

Dimensions

PF CP 21

Cellulosic paper, phenolic resins

from - 60 to + 120

Mechanical and low voltage electrical applications. Good electrical properties when exposed

to normal relative humidity.

Inner diameter:
12-500 mm;
Wall thickness:
1,5-20 mm;
Length 900 mm

PF CP 22

from - 60 to + 120

High voltage electrical applications at power CP frequencies. High electric strength in oil.

Properties

IEC 61212-3-1

PF CP 21

PF CP 22

Property

Test method

Unit

Minimum
or
maximum

Values

Requirement

Typical

Requirement

Typical

Flexural strength perpendicular to laminations

ISO 178

MPa

minimum

100

150

100

150

Axial compressive strength

ISO 604

MPa

minimum

100

110

80

90

Cohesion between layers

IEC 61212-2

MPa

minimum

70

70

Breakdown voltage at 90°C in oil parallel to laminations

IEC 60243-1

kV

minimum

10

15

15

20

Electrical strength at 90°C in oil perpendicular to laminations
(wall thickness =2 mm),

IEC 60243-1

kV/mm

minimum

-

10

10,8

12

Insulating resistance after immersion in water

IEC 60167

MΏ

minimum

1

1

1

1

Termal endurance

IEC 60216-1

ISO 178

TI

minimum

120

120

Water absorption

ISO 62

mg/cm2

maximum

10

6

10

6

Density

ISO 1183-1

g/cm3

Range

1,10-1,20

1,05-1,15

Listed in the table are informational. On this basis, claims for quality can not be justified.