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EPOXY LEVHALAR VE BORULAR

EPOXY REÇİNELİ CAM FİBER LEVHALAR

Cam elyaflı epoksi reçineli levhalar. Isı sınıfı: F ve H sınıfıdır. Kalınlıkları 0,35 mm ile 50 mm arasında değişir. Ticari olarak adı G 11 olarak geçer.


ELECTROTECHNICAL SHEET GLASS FABRIC LAMINATE

GRADE ST-ETF (NEMA GRADE G11)

Hgw 2372.4


    It is a laminar pressed material manufactured on the basis o glass fabric impregnated withepoxy polifunctional binder ; thickness 0,35-50 mm    It is intended for the work in the conditions of normal relative humidity and in transformer oil at voltage more than 1000 W and frequency of current 50 Hz as well as in the conditions of elevated humidity at voltage up to 1000 W and freguency of current 50 Hz.   It possesses high mechanical strengh at moderate temperatures, high stability of electricalproperties at elevated humidity, high thermal stability.
Physical mechanical and electrical properties
Standards Material grade
 OCT 12652-74 ST-ETF
NEMA-LI 1-1989 G-11
IEC 60893-3-2 EP-GC 203
Property
Test condition
Unit
Value
Standard
Achieved
Volume resistivity (to 8 mm)
24 / 23 / 93
Ohm-m
1-10 10
7,0-10 12
Tangent of dielectrik loss angle at     1 MHZ, not more than
24 / 23
-
0,04 
0,012
Inuslation resistance, not less than
24 / 23
-
5-10 4
1,2-10 6
Breakdown voltage parallel to lamination (one-minute examining test), not less than
kVeff
35
>35
Dielectric strength normal to layers (one minute examining test), not less than
kVeff
13,1
17
Splitting effort, not less than
A
H
2500
4600
Breaking stress at bending normal to layers, not less than
A
MPa
350
460
MPa
-
310
Breaking stress at elongation, not less than
A
MPa
220
340
Charpy impact strength parallel to laminations on notched samples,not less than
A
kJ / m2
50
50
Long-term permissible temperature
A
° C
from - 65 to + 180
Density
A
kg / m3
1700-1900
1890
Sheet thickness
mm
0,35 - 50
Standard sheet sizes
mm
1220 x 1020                              2440 x 1020
Notes: 
 A - without preliminary treatment;  C- preliminary damp treatment; D- preliminary treatment in distilled water
 E- preliminary treatment at the elevated temperature. Figures next to letters denote: the fist - treatment 
duration (hour); the second - treatment temperature ( 0 C) ; the third - relative humudity of air (%).

 

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Mail : info@bisaskimya.com
 
 
 

ISI SINIFI

ÜST  DAYANIM
DERECESİ

Y

  90 ºC

A

105 ºC

E

120 ºC

B

130 ºC

F

155 ºC

H

180 ºC

C

220 ºC