Complaint
electrical cardboard insulating kraft paper pressboard for transformer
Characters and Applications for transformer insulation pressboard
Pressboard has high chemical purity, excellent elongation, good Mechanical and dielectric Strength
For oil-immersed transformers, capacitors and switches
Technical sheet for transformer insulation pressboard
Index. | Unit | Values | ||||
| electrical presspahn Cardboard transformer insulation pressboard |
| ≤1.6 | >1.6~3.0 | >3.0 | |
1 | Nominal thickness tolerance | % | ≤10(±) | |||
2 | Nominal Grammage | g/cm3 | 1.00~1.20 | 1.00~1.25 | 1.15~1.30 | |
3 | Shear strength,M.D. | Mpa | ≥100 | ≥105 | ≥110 | |
4 | Shear strength,C.M.D. | Mpa | ≥75 | ≥80 | ≥85 | |
5 | Elongation (M.D.) | % | ≥3.0 | |||
6 | Elongation (C.M.D.) | % | ≥4.0 | |||
7 | Shrinkage | % | ≤10.0 | ≤7.5 | ≤5.0 | |
8 | Shrinkage which would resume | % | ≥45 | ≥50 | ≥50 | |
11 | Shrinkage: | M.D. | % | ≤0.5 | ||
|
| C.M.D. |
| ≤0.7 | ||
|
| Thickness direction |
| ≤4.0 | ||
12 | Moisture content | % | ≤6.0 | |||
13 | Ash content | % | ≤1.0 | |||
14 | Electrical conductivity of aquesous extract | ms/m | ≤1.6 | >1.6~3.0 | >3.0 | |
15 | Aquesous extract (PH) | - | 6~9 | |||
16 | Oil absorption | % | ≥11.0 | ≥9.0 | ≥7.0 | |
17 | Voltage resistant strength(In air) | MV/m | ≥12 | ≥11 | ≥10 | |
18 | Voltage resistant strength(In oil) | MV/m | ≥40 | ≥35 | ≥30 | |
Q1: How about MOQ?
MOQ is according to different products. Whatever you need, we are glad to quote best price with good quality.
Q2: Can you send samples for testing?
500g Samples are free supplied, but express freight should be taken by client. After making order, we'd like to return freight back.
Q3: How can you guarantee the quality of mass goods is same as the sample sent to me before?We kept another same sample and marked on company when we sent to customer. So our production will be based on.
Q4: Which package do you use?
Package is important part to avoid goods breaking in transportation. We will choose suitable packing depend on materials.Q5: When customer respond quality issues after pick up goods, how to deal with?
1) Customer could supply photos of issued goods for our sales staff and then we'll verify which part is wrong.
2) If the issue is confirmed, company will negotiate with customers and compensate in coming orders.
Q5: how about your production time?
It is according to the quantity of goods you needs, but usually 15days is enough, if customers need hurrily, we can negotiate.
Q6: incoterm
FOB FCA CIF C&F
Company information
ERIC(TIANJIN)TECHNOLOGY GROUP CO.,LTD is a professional manufacturer of
Various electrical insulation materials.
Fr4 G10 epoxy fiberglass cloth resin laminate sheet insulation material
Our main products are as follows:
1.Laminated sheet: epoxy fiberglass cloth sheet & tube, phenolic bakelite sheet
& rod.
2.Fiberglass sleeving: PVC fiberglass sleeve, acrylic fiberglass sleeve, silicone rubber fiberglass sleeve and silicone fiberglass sleeve
3.Electrical composite insulating paper: DMD NMN NHN etc.
4. Mylar PET film, polyimide film
5.Varnished products
Eric always holds the principle of "Talent-oriented", puts science and technology in the first place, employs qualified professionals to develop new products and meets market demands.
