Transformer DDP Duct Strip, Electrical Insulating Strips Insulation Material

Basic Info

Classification	Inorganic Insulation Material
Certification	ISO9001
Color	Brown
Brand	PIONEER
Transport Package	Pallet
Trademark	Kangliyuan
Origin	Tianjin
Production Capacity	50000 Kg

Product Description

Product Description
Description and feature:
Duct strip is made from high quality pressboard G4 grade. It has excellent transformer oil impregnation feature, high compressive strength more than corrugated pressboard which is the old technology. It is used at high temperature condition and it could be improved the circuit strength.The character are below:
1. High mechanic strength
2. High electric strength
3. Accurate dimension

 

Application:
Oil duct strip provides duct for the flow of the cooling oil in layer and strip windings in distribution power transformers. It is manufactured by bonding transformer board sticks onto insulating paper or single-coated diamond dotted paper.
Main strips: Rectangular strips, T-strips, Pigeon cauda strips, Abnormity strips.


TRANSFORMER OIL DUCT STRIP DATA SHEET
PART1: PRESSBOARD STICK4*5*1000MM

ITEM	TYPICAL VALUES	MATTER OF FACT
Thickness: mm	4mm±7.5%	4.1-4.3mm≤7.5%
Width	5±0.5mm	4.95-5.38mm≤0.4mm
Length of 1000mm:	±5mm	1000±3 mm
Pitch of stick centre:	±3mm	23±2 mm
Apparent density: g/cm3	1.1-1.2	1.18
Moisture content ,%	4.0 to 9.0%	5.7
PH water extract:	6.0 to 9.0	6.8
Ash content,% maximum	1%	0.51
Tensile strength Mpa Machine direction: Cross machine direction:	≥90 ≥50	107.4 101.3
Oil absorption	≥7.0%	12.29
Shrinkage rate% MD CMD Thickness D	≤1.0 ≤1.4 ≤6.0	0.16 0.25 ≤5
Elongation rate MD CMD	≥3 ≥4	≥4.4 ≥4.4
Conductivity of aqueous extract Ms/m	≤10.0	5.03
Dielectric breakdown:(Kv/mm )In Air In Oil	10 24	16.7 35.7