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Suzhou Jufeng Electrical Insulation System Co., Ltd.

Encapsulating Resin Specific for Transformers manufacturer / supplier in China, offering Jf-1850 Encapsulating Resin Specific for Dry Type Transformers, Stator Coil, Wind Driven Coil and so on.

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Jf-1850 Encapsulating Resin Specific for Dry Type Transformers

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Product Description

1.Description
JF-1850 encapsulating resin specific for dry type transformers is an A-Bdual-componentsystem that comprises Part A of liquid epoxy resin and pre-added filler, and Part B, consisting liquid anhydride, pre-added filler, promoting agent, auxiliary agent, etc. Part A and Part B shall be well mixed up in the proportion of 1:1 before pouring into the casting mold.
JF-1850 is featured in the low-viscosity, rational formula and advanced technology, as well as the excellent liquidity and valid period under 30  -60  . Application of this product is found in the pouring for dry type transformers with voltages up to 35KV,time. dry type discharging coils and voltage current transformers. During the curing, JF-1850 is featured in low exothermic peak, small shrinkage and not easy to crack. The condensate of the product shows excellent electric and mechanical performance.
2.Technical parameters of the product
S/N
Names of Properties
Testing Conditions
Unit
Target Values
1
Appearance
∶Party A
   Party B
Bare eye observation
--
A variety of colors, White sticky liquid
Brown and yellowish transparent liquid, no mechanical impurity
2
Viscosity
∶Party A
   Party B
(23±1)
mPa.s
40005500
30003500
3
Specific gravity∶Party A
   Party B
23
g/cm3
1.551.60
1.501.55
4
Impact strength
Room temperature
MPa
100120
5
Volume resistivity
Room temperature
Ω·m
≥1.0×1013
6
Surface resistance
Room temperature
Ω
≥1.0×1013
7
Moisture absorption rate
Room temperature 24 h
%
≤ 0.1
8
Electric strength
Room temperature
Mv/m
≥20
9
Storage period
 Under 25 , 
sealed and avoid light
Month
6
 
 
3.  Application process for reference
Pro-heating of pouring materials: preheat Part A and B separately in an 50  ~ 60  oven  for 2 to 3 hours.
Pre-baking of the workpiece∶                70 ~ 80         2h ~ 3 h
Seal the mold and vacuum the workpiece:
Feeding encapsulating compound∶                 50 ~ 60        20min ~ 30min
Drying∶                100 ~110       2h ~4 h
130 ~ 140      3h ~6 h
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