Specifications
Place of Origin: China (Mainland) Brand Name: XINCHENG
Product name: Electrical Oil Duct Insulation Strip pressboard strip transformer
Raw material: sulphate wood pulp Insulation class: A (105
ºC)
Material: sulphate wood pulp board, pressboard Application: High Temperature transformer
Model Number: pressboard strips Type: Insulation Paper, insulation pressboard
Use: Transformer oil duct Tensile Strength: 400Mpa
Rated Voltage: 110-1100KV Usage: oil immersed transformer
Certification: ISO9001:2008, ROHS, UL Color: Nature
Type 1: Rectangular Oil Duct Strip
Type 2: T-Strip
Type 3: Trapezoidal Strip
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
| 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 |
PART2: SINGLE SIDE DIAMOND DOTTED PAPER DATA SHEET
| ITEM |
TYPICAL VALUES |
MATTER OF FACT |
| Caliper: (millimeter) |
0.25mm |
| Thickness: mm |
0.25±0.025mm+0.06 |
0.260
(0.260,0.258,0.262) |
| Width: mm |
1000±5mm |
1000-1005 |
| Apparent density: g/cm3 |
0.9 to 1.1 |
1.01 |
| Moisture content ,% |
4.0 to 8.0% |
5.6 |
| PH water extract: |
6.0 to 8.0 |
7.5 |
| Ash content,% maximum |
1% |
0. 43 |
| Coating thickness per side mm |
0.006 to 0.012 |
0.011 |
Tensile strength,N/mm2
Machine direction:
Cross machine direction: |
80
35 |
86.6
48.1 |
Dielectric breakdown:
(volts/layer ,dry test) |
≥2100 |
2230 |
| Bond strength: Kpa |
450kpa |
679 |
| |
|
|
|
1.Rectangular Strips
2. Trapezoidal Strips
3. T-Strips
FAQ
Q: How long is your delivery time?
A: Generally it is 3-7 days if the goods are in stock. Or it is 10-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge(except special products), but do not pay the cost of freight.
Q: How can you guarantee the quality of mass production is same with the sample sent to me before?
A: Our warehouse staff will leave another same sample as yours. The production process will be under your requirement.
Q: What is your terms of payment ?
A: Payment≤1000USD, 100% in advance. Payment≥1000USD, 30% T/T in advance ,balance before shipment.
service
Pre-sales Service
1.Offering comprehensive technical and business consultation services;
2.Designing and fabricating targeted products according to the special requirements of clients;
3.Introducing & Demonstrating products and its application to clients;
4.Helping clients to choose the required products.
After-sales Service
1.Highly inspecting equipments in every working procedure, quality comes first;
2.Fast & Safe Delivery;
3.Dispatching technician if customer need any site instruction.
Packaging & Delivery
Packaging Details:
1.Plastic bag and pallets.
plywood case/wooden case
2. According to cusotmer's special requirement.
Delivery: Around 1-2weeks upon order confirmed.
Please Contact Us
Miss: lydia
http://chinainsulation.en.made-in-china.com
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