insulating paper for transformer DDP

Product Description                                                            Diamond Dotted insulating Paper                                    In accordance with GB/T5591.3.1-2008 and IEC 626-2   Description:  DDP is produced by coating modified epoxy-resin in diamond dotted patterns on electrical insulating paper. Advantage:   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. Applications:  it is suitable for turn-to-turn insulation of coil wires on oilimmersed power transformers and suitable for layer insulation of coils on distribution transformers.     1  DDP Technical Data

ITEM

Property

Unit

Index

1

Thickness and          Tolerance

mm

0.08 ±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

2

Density

g/cm³

0.85~1.10

3

One Side      Coating

µm

6~12

10~15

4

Moisture    Content

%

4.0~8.0

5

Ash Content

%

≤ 1.0

6

Water Extraction of Electrical Conductivity

mS/m

≤ 10

7

PH Water    Extract

6.5~8.5

8

Oil Absorption

%

≥ 20

9

Bond Strength

Kpa

≥ 650

10

Tensile   Strength

TD

N/10mm

60

110

160

180

230

≥ 250

MD

30

50

70

80

100

≥ 120

11

BDV

KV

0.88

1.37

2.00

2.10

2.25

≥ 2.50

  Packaging & Shipping  Each roll with protective film and carton, then packed into pallets.   Company Information   Yongkang Haotai Industry was established in 2005.  4 Line automatic production lines to ensure the delivery in time.          Top 3 Manufacturer of Class E&B&F&H&C insulating materials for motor and transformers in China.    Certifications UL(UL NO.: E353580), ROHS, MSDS, REACH and ISO9001:2008 Approved.
  Our Services a.1 year warranty b.OEM & ODM are welcome c.Trial orders are available d.Sample can be supplied in 7days. e.Technical supports. f.Shipping and express will be tracked and reported at any time after sending. FAQ   Q:What's my consideration when I choose insulation materials? A:  -The raw materials must be A quality      -The steady of the different batch. Means manufacturer must test in details. Q:Can I be a distributor of Haotai? A: Of course you can. Q:What are the benefits of being a Haotai distributor? A: -  Special discount .      - Marketing protection.      - Prepare the stock for you and offer a short delivery time for you.      - Point to point technical supports and after sales services. Q: How can I become a distributor of Haotai? A:  Contact us immediately for further details by sending us an inquiry. Q: Where is the nearest airport? A:  Yiwu airport (1 hour), international airport are Hangzhou( 2 hours ), Shanghai airport ( 3 Hours ). Q: What are your main products? A: For oil immersed transformers, like Diamond dotted paper/DDP/DPP, Crepe paper tube, Kraft paper, pressboard and so on. For dry type transformers, like Class F DMD, Prepreg DMD Resin Prepreg SHS, NMN, AMA, NHN, AHA and so on. For electrical motors, like Polyester film, DMD, NMN, NHN Fish paper with polyester film.PMP and so on. Q: Are you manufacturer or trading company? A:  Haotai is manufacturer. Q: What is the width range? A:  From 5mm to 2000mm. Q: Could you supply free samples? A:  Yes, A4 shape sample is free for customer, customer only pay the express. Q: How many kg per roll? A:  About 50 kg/ roll,or can be requested by customers.   Related product