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PRODUCTS
  • PRODUCTS NAME: PET composite membrance
  • NO.: PET composite membrance
  • ADD TIME: 2013-08-13
  • Views : 136

一、Product introduction
The composite polyester film is a three-layer (or two-layer or four-layer) soft composite material with two-side (or one-side) bonding polyester film with high-temperature resistance adhesive by American Dupont MYLAR polyester film.
The product has the advantages of good behaviour of electricity, long storage life, which can be used as the insulating cylingder between the high and low tension coil of dry-type transformer and reduce the distance of high and low tension and magnitude of partial discharge, as well as used as turn-insulating and liner insulation of electrical machine and equipments.
二、Technical requirements and test methods
Technical requirements should satisfy the relevant provision of the company.
Test methods should be taken based on the standards of the company.
三、The main performance of the product
1、Storage stability
The product has good storage stability and it can be stored to a year under room temperature.
2、General performance and measured data (table 1)
3、The width standard in common use of composite polyester film (table 2)

 

Serial number  
performance
unit

   requirement

1
Nominal thickness
mm  
0.5 
0.7  
1.1 
1.4
2
Thickness allowable tolerance
%  
10 
10 
10 
10 
3
Ration
g/m2
700 
1000  
1500   
2000
4
Ration allowable tolerance %
%  
10
10
10
10
5
Film thickness
N/10mm 
0.25
0.35
0.35
0.35
6
Breakdown voltage
KV
≥25
≥28
≥30
≥35
7
Relative dielectric constant 50Hz
 
3.0-3.4
 
 
 
8
Dielectric loss factor50Hz 
 
≤6.0×10 -3
 
 
 
9
Surface sheet resistivity
Ω 
≥1.0×10 13
 
 
 

Table 1 

 

Product name
standard  
 
 
 
0.5 composite 800mm polyester film
700mm   
800mm  
1000mm 
1200mm
0.7 composite polyester film
700mm   
800mm  
1000mm 
1200mm 
1.1 composite polyester film
800mm  
1000mm 
1200mm 
1400mm
1.4 composite polyester film
800mm
1000mm  
1100mm
1200mm

Table2 

If there is any other requirement, please have a negotiation
四、Testing, packaging, sign, transportation and storage
1、The predelivery test items of product are the 1st, 3rd and 6th requirements of the products standards.
2、The product should be stored below 25℃ in a dried, clear and good drafty storeroom, and don’t approaching the combustion source and avoid solar radiation.
3、The storage life of the product is one year after the date of production, if it exceeds the storage life, it can be used only after being tested qualified according to the product standard.
4、The product will be baling and each one is 30 to 70kg, and it generally I continuous segments, the breadth can be as wide as 1200mm and it also can be divided into the tape spool according to the customers’ requirements. The product of 1.1mm can be provided for the products of 700、800、900、1100、1200、1300、1400mm.
5、Others should be accord with relevant standard of GB5591.1

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