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Transformer Strip/Electrical Transformer Oil Duct Insulation Strips

Transformer Strip/Electrical Transformer Oil Duct Insulation Strips

Product DescriptionOIL DUCT STRIP TRANSFORMER OIL DUCT :We have one pressboard stick (oil duct stick) equipment and 4 sets full-automatic edge fixing lines. Our daily putout is 10000 pcs duct stick to supply. We could provide 500 m oil duct strip one …

Product Description

OIL DUCT STRIP TRANSFORMER OIL DUCT :
We have one pressboard stick (oil duct stick) equipment and 4 sets full-automatic edge fixing lines. Our daily putout is 10000 pcs duct stick to supply. We could provide 500 m oil duct strip one day. 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 paer. Duct strip has the excellent transformer oil impregnation feature, it has high compressive strength more than corrugated pressboard which is the old technology, it's used at high temperature condition and it could be improved the circuit strength.

TRANSFORMER OIL DUCT We have 2SETS pressboard stick (oil duct stick) equipment and 4 sets full-automatic edge fixing lines. Our daily putout is 10000 pcs duct stick to supply. We could provide 500 m oil duct strip one day.

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
 
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





                                         
   
1.Rectangular Strips

2. Trapezoidal Strips
  Transformer Strip/Electrical Transformer Oil Duct Insulation Strips

3. T-Strips

Transformer Strip/Electrical Transformer Oil Duct Insulation Strips