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Oil Duct Spacing for Transformer/Oil Grid

China Oil Duct Spacing for Transformer/Oil Grid, Find details about China Insulation Material, DDP Duct Strip from Oil Duct Spacing for Transformer/Oil Grid

Classification
Inorganic Insulation Material
Certification
UL, ISO9001, IEC
Color
Brown
Trademark
Kang Liyuan
Transport Package
Pallet
Origin
Tianjin, China
HS Code
8547909000
Classification
Inorganic Insulation Material
Certification
UL, ISO9001, IEC
Color
Brown
Trademark
Kang Liyuan
Transport Package
Pallet
Origin
Tianjin, China
HS Code
8547909000
Introduction
 Insulation class: A (105 °C)
 100% sulphate wood pulp
 Natural-color
 Precompressed pressboard, even fiber orientation, hard and dimensionally stable
 High purity and mechanical strength
 Low shrinkage, fiber-free surface
 Good compatibility with liquid dielectrics
 
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
Oil Duct Spacing for Transformer/Oil Grid



 
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
ITEMTYPICAL VALUESMATTER OF FACT
Thickness: mm4mm±7.5%4.1-4.3mm≤7.5%
Width 5±0.5mm4.95-5.38mm≤0.4mm
Length of 1000mm:±5mm1000±3 mm 
Pitch of stick centre:±3mm23±2 mm
Apparent density: g/cm31.1-1.21.18
Moisture content ,%4.0 to 9.0%5.7
PH water extract:6.0 to 9.06.8
Ash content,%    maximum1%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≤10.05.03
Dielectric breakdown:(Kv/mm )In Air
In Oil		10
24		16.7
35.7

 
PART2: SINGLE SIDE DIAMOND DOTTED PAPER DATA SHEET
ITEMTYPICAL VALUESMATTER OF FACT
Caliper:  (millimeter)0.25mm
Thickness: mm0.25±0.025mm+0.060.260
(0.260,0.258,0.262)
Width: mm1000±5mm1000-1005
Apparent density: g/cm30.9 to 1.11.01
Moisture content ,%4.0 to 8.0%5.6
PH water extract: 6.0 to 8.07.5
Ash content,%    maximum1%0. 43
Coating thickness per side mm0.006 to 0.0120.011
Tensile strength,N/mm2 
Machine direction: 
Cross machine direction: 		 
80
35		 
86.6
48.1
Dielectric breakdown: 
(volts/layer ,dry test)		≥21002230
Bond strength: Kpa450kpa679
    

Please Contact Us
Miss: lea
  
Oil Duct Spacing for Transformer/Oil Grid
                     

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