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
| 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 |
| 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.
