COTTON CLOTH MOULDED TUBES AND RODS

TUBES PF CC 31, PF CC 32, PF CC 3

RODS PF CC 41, PF CC 42, PF CC 43

Round laminated moulded tubes

Types	Composition	Operating temperature range, ^оС	Applications and distinguishing characteristics	Dimensions
PF CC 31	Woven cotton cloth, phenolic resins	from - 60 to + 120	Mechanical and electrical applications, fine weave	Nominal diameters, mm 7,05 х 18,5 7,05 х 21,5 10,0 х 21,5 10,0 х 25,0 10,0 х 28,0 12,5 х 24,5 14,3 х 28,0 15,5 х 26,5 17,5 х 32,5 Length - not less 200 mm
PF CC 32		from - 60 to + 120	Similar CC to type PF CC 31, but of coarse weave.
PF CC 33		from - 60 to + 120	Similar to type PF CC 31, but of very coarse weave

Properties

IEC 61212-3-2				PF CC 31		PF CC 32		PF CC 33
Property	Test method	Unit	Minimum or maximum	Values
Property	Test method	Unit	Minimum or maximum	Standard	Typical	Standard	Typical	Standard	Typical
Flexural strength perpendicular to laminations	ISO 178	MPa	minimum	80	120	80	120	80	120
Axial compressive strength	ISO 604	MPa	minimum	100	180	100	180	100	180
Cohesion between layers	IEC 61212-2	MPa	minimum	90	200	90	200	90
Breakdown voltage at 90°C in oil parallel to laminations	IEC 60243-1	kV	minimum	5	12	5	12	5	200
Electrical strength at 90°C in oil perpendicular to laminations (wall thickness =3mm),	IEC 60243-1	kV/mm	minimum	1,6	2,5	1,6	2,5	1,6	2,5
Insulating resistance after immersion in water	IEC 60167	MΏ	minimum	10	1×10²	5	1×10²	1	50
Termal endurance	IEC 60216-1 ISO 178	TI	minimum	120		120		120
Water absorption	ISO 62	mg/cm²	maximum	5	2	6	2,5	8	2,5
Density	ISO 1183-1	g/cm³	Range	1,2-1,4		1,2-1,4		1,2-1,4

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