Tianjin, China
Business Type:
Manufacturer/Factory
Registered Capital:
1000000 RMB
Plant Area:
101~500 square meters
Management System Certification:
ISO 9000
Average Lead Time:
Peak season lead time: one month
Off season lead time: within 15 workdays
OEM/ODM Service
Sample Available

Diamond Dotted Paper/DDP Paper/ Insulation Paper, DDP Double Sided Contact Paper, DDP Insulating Paper Diamond Dotted Paper manufacturer / supplier in China, offering Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper, FRP Filament Winding Cyliner for Dry Transformer, Epoxy Resin Glassfiber Filament Winding Tube (safety yellow) /Filament Wound Epoxy Tubes and so on.

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Supplier Homepage Products Insulation Paper Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
  • Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper

Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper

Get Latest Price
Min. Order / Reference FOB Price
500 kg US $1-9/ kg
Port: Qingdao, China
Production Capacity: 5000t/Year
Payment Terms: L/C, T/T, D/P
Application: Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Motor, Insulating Varnish, Switch Baseplate, Oil Immersed Transformers Insulation, Transformer
Type: Insulation Paper, Insulation Paper DDP Diamond DOT
Chemistry: Inorganic Insulation
Material: Wood Pulp, Insulation Paper and Resin, Paper
Thermal Rating: A 105
Maximum Voltage: >100KV

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Basic Info

Model NO.
Electrical insualtion diamond dotted paper DDP
Classification
Inorganic Insulation Material
Certification
UL, ISO9001
Color
Brown
Brand
Xincheng
Product Name
Diamond Dotted DDP Electrical Insulating Paper
Related Product
Pressboard, Craft Paper, DMD. Nmn and So on
Usage
Electrical Insulation for Transformer
Model Number
DDP, Cable Paper, Kraft Coated with Heat
Temp.Class
a Class
Rated Voltage
6~24kv/Layer
Width
20-1900mm or Customized
Ash Content
≤0.7% as Below
Trademark
XINCHENG
Transport Package
Pallet
Specification
ROLL
Origin
China
HS Code
4811490000
Quick Details
Place of Origin: China (Mainland)                                          Brand Name: XINCHENG
Usage: oil immersed transformer insulation
Application: Oil immersed transformers                                Product name: Diamond dotted DDP electrical insulating paper
Edge Internal tearing resistance N : ≥115N                          Tear strength, Machine direction: ≥4000mN
Tear strength, Cross machine direction: ≥5500mN               Dielectric breakdown(volts/layer ,dry test):≥:2100
Bonding strength: >500Kpa                                                   Model Number: DDP, cable paper, Kraft coated with heat
Type: Insulation Paper, insulation paper DDP diamond dotted paper          Material: Wood pulp
Material: Insulation paper and resin                                     Rated Voltage: 6~24KV/Layer
Standard color: Natural                                                         Temperature: 105°C
Thickness: 0.08,0.13,0.18,0.20,0.25mm,0.38mm,0.5mm,etc                Temp. Class: A class
Sample: Sample Available                                                    Width: 20-1900mm or customized
Ash content: ≤0.7% as below                                              Standard:    GB/T5591.3.1-2008 and IEC626-2 
 
 
1.Product Description
Diamond dotted paper(DDP) is made of insulating paper with diamond-shape epoxy resin dotted on both sides. The epoxy used in D.D.P contains a kind of incubative hardener material. It is a dry and crisp material at normal temperature.
This product has good dielectric properties and good mechanical properties after heat solidification. It is to be used in oil-immersed transformers for the insulation between of coils and between layers of oil immerged power distribution transformers.
Diamond pattern paper made of Kraft paper coated with heat curable epoxy resin.The epoxy adhesive is applied to both sides of the paper in a diamond pattern consisting of 9.5mm x9.5mm diamonds with 15.9mm center spacing.
Properties
It is a kind of material with inertia, dry and no conglutination at normal temperature (below 30ºC). The Diamond Dotted Paper (DDP)will make the electric conductor forever felt up as a hard unit under the high temperature by its internal latency substance. When the temperature is rising up to 90ºC, The Diamond Pattern Paper (DDP)begins one-off thaw and then one-off solidification. When to keep the temperature at 90ºC for 90 minutes, the epoxy resin would paste on neighboring cable and paper safely. The felt intensity is as high as to 70psl at 100ºC.(The value at least is equal to 0.450Mpa) (IEC standard)
Applications
This product has good dielectric properties and good mechanical properties after heat solidification. It is to be used in oil-immersed transformers for the insulation between of coils and between layers of oil immerged power distribution transformers.
The Diamond Dotted Paper to be used in oil immersed transformers, for coil insulation. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high temperature change that is to be called as felt. It is suitable for turn-to-turn insulation of coil wires on oil-immersed power transformers and suitable for layer insulation of coils on distribution transformers.
 
 Specifications:
1).Density : 0.85~1.10 g/cm3
2). Width: 800mm, 960mm, 1000mm, 1050mm, 1200mm, 1300mm or customized
3).Thickness:0.08mm, 0.13mm, 0.18mm, 0.25mm, 0.38mm, 0.50mm.or customized
4). good dielectric properties and good mechanical properties after heat solidification
5). Color: nature, brown  

Advantage: 
It is to be used in oil-immersed transformers for the insulation between coils. On the insulation layer, there is a layer dotted epoxy resin that will be changed with high temperature change that is to be called as felt.
      In the process of coil desiccation, the coated epoxy-resin would be melted in a certain temperature and become adhesive. With the temperature increased, the melted resin would cure to C-stage, and firmly adhere each adjoining layer of the coil, thus forming a winding section. If a short circuit occurs in the coil, the resin bond strength would sufficiently prevent the displacement of each winding layer, which ensures the long-term mechanical and physical properties of the insulation structure. As the resin coating distributes in a diamond-dotted pattern, little quantity of the resin would soak into the insulating paper during the melting and curing process, which ensures the elimination of air content in the insulating paper and guarantees the soakage of oil, minimizing the damages of corona and partial discharge.
 

Transformer insulation paper main parameter:
PropertiesValues
ThicknessInch0.0030.0050.0070.0100.0150.020
mm0.080.130.180.250.380.50
Thickness tolerance±10%
Apparent density: g/cm^30.9~1.1, all thicknesses
Moisture content4.0% ~ 8.0%, all thicknesses
PH water extract6.0 ~ 8.0, all thicknesses
Ash content0.7% maximum
ElongationMD2%
TD4%
No-pollution oil of transformerNon-pollution
Coating thickness per side0.006mm to 0.012mm
Tear strengthMD55100140220410440
TD70145210370600700
Tensile strength, MpaMD707080808080
TD353535353535
Mullen burst strength, min(Psi)406590150200300
Dielectric breakdown (KV/layer)Dry Test0.751.101.402.102.903.10
Oil Test5.58.510.514.020.023.5
Bonding strengthMinimum 40 psi shear strength, tested at 100 degrees 450kpa.
 
DDP Technical Data
 
ITEMPropertyUnitIndex
1Thickness and Tolerancemm0.08
±0.005
0.13
±0.007
0.18
±0.01
0.20
±0.01
0.25
±0.01
0.30
±0.01
0.35
±0.02
0.38
±0.02
0.45
±0.02
0.50
±0.03
2Densityg/cm³0.85~1.10
3One Side Coatingµm6~1210~15
4Moisture Content%4.0~8.0
5Ash Content%≤0.7
6Water Extraction of
Electrical Conductivity
mS/m≤8
7PH Water Extract 6.5~8.5
8Oil Absorption%≥20
9Bond StrengthKpa≥650
10Tensile
Strength
TDN/10mm60110160180230≥250
  MD 30507080100≥120
11BDVKV0.881.372.002.102.25≥2.50
                    
 
 
 
2 Curing conduction stock
2.1 Curing: 90°C±2 °C/3h firstly , then130°C±5°C/6h, or according customer needs
2.2 Storage: ≤40°C,dry, clean in warehouse. Avoid fire, heat and sunlight.
2.3 Storage life: 12 months. Still effective if qualified in retest after 12 months.
 
 
FAQ
Q: how to contact with sales ?
A:you can send inquiry of our products,it will be replied within 12 hours;
you can contact dirrectly with our sales through Alitalk or WhatsApp,Skype as you like
 Q:how about certificate ?
A:professional certificate, if you want to do certification, pls feel free to tell us, we will consider to make it as fact.
 Q:what about the samples delivery?
A:As our company rules, we usually provide sample before you decide to place an order. Stock sample will be delivered within 5 days. Proofing will depend on the actual situation,
 Q:what about the samples fee?
A: some samples are free, you just need to pay for the freight fee;
we will charge some fee if proof produced. Later if an order placed, the sample fee is refundable.
 
 
Packaging & Delivery
Packaging Details:
1. Roll packing in requested meter, protected by PP bag and carton, put on fumigation-free pallets, wrapped with shirinking film, finally palletized. 
2. According to customer's requirement. 
Delivery Time: 10 days after payment
 
Our Services
 1) if you are interested in our products, you can get contact with us through online tools or email as you like, inquiry is warmly welcomed from you
2) your inquiry or email will be positively replied within 12 hours
3) we provide OEM/ODM service on insulation material, we can make sure of the quality, our QC will submit inspection report before shipment
4) economical and fast delivery
5) professional after-sale service
 
  
Please Contact Us
 Miss: lydia
Mob: 86-13752439076      Fax: 86-22-60863016        
http://www.chinainsulatingmaterial.com
 
 
 

  Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper



Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper

Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
Electrical Insualtion Diamond Dotted Paper DDP Insulation Presspaper
 

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