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Varnishes

Varnish product series:
- Melamine Alkyd Impregnating Varnish 1032
- Fast Curing Melamine Alkyd Impregnating Varnish 1038
- Fast Curing B-F General Polyester 1040-1
- Polyimide Impregnating Varnish 1070
- Epoxy Solventless Glue ER-300
- Epoxy Solventless Trickle Varnish F1133


 

Melamine Alkyd Impregnating Varnish 1032

Properties

1. Curing ability of thick layer (105⊥ 6h + 120⊥ 4h) .
Not worse than S1, U1 or I4.2

2. Volume resistivity
Normal ≡ 1.0℅1012 次﹞m
130⊥ ≡ 1.0℅107次﹞m
3. Electric strength
Normal ≡ 80MV/m
130⊥ ≡ 40MV/m

Application

Suitable for Coils insulation in motors or electric devices



Fast Curing Melamine Alkyd Impregnating Varnish 1038

Properties
1. Curing ability of thick layer (105⊥ 6h + 120⊥ 4h) .
Not worse than S1, U1 or I4.2
2. Volume resistivity
Normal ≡ 1.0℅1012 次﹞m
130⊥ ≡ 1.0℅107次﹞m
3. Electric strength
Normal ≡ 80MV/m
130⊥ ≡ 40MV/m
Application Suitable for Coils insulation in motors or electric devices


Fast Curing B-F General Polyester Impregnating Varnish 1040-1

Properties

1. Curing ability of thick layer (120⊥ 10h)
Not worse than S1, U1 or I4.2

2. Volume resistivity
Normal ≡ 1.0℅1012 次﹞m
130⊥ ≡ 1.0℅107次﹞m
3. Electric strength
Normal ≡ 90MV/m
130⊥ ≡ 50MV/m

Application

Suitable for Coils insulation in motors or electric devices

Polyimide Impregnating Varnish 1070

Epoxy Solventless Glue ER-300

Properties

1. Charpy impact strength ≡ 3.0kJ/m2
2. Volume resistivity ≡ 1.0℅1012次.m
3. Electric strength ≡ 16.0MV/m
4. Dielectric dissipation factor Tan 汛 ≒ 0.01
5. Relative permittivity 汍 ≒ 4.0

Application

Potting and sealing parts of electric devices

Epoxy Solventless Trickle Varnish F1133

Properties: F1133 is a type of epoxy solventless trickle varnish modified by unsaturated polyester resin.  It is composed of part A and B.  Before using the varnish, please fully mix part A and B by the proportion of 1:1 (weight ratio) and wait for about 20 minutes until the bubbles disappeared.  It is applied to coils insulation for motors and electric devices of Class B and F.

Main Technical Data:


Properties

Test condition / Value

Outer appearance

Checked by eye:
Uniformly dissolved, without impurities

Viscosity (4# cup)

23⊥㊣2⊥: 15~45s

Curing time

130⊥㊣1⊥: 120min.

Curing of thick layer

10 grams of sample, 110⊥ 2h + 130⊥ 30min:
Not worse than S1, U1 or I4.2

Content of volatile matter

130⊥㊣1⊥, 2h: ≒15%

Electric strength

1ㄘNormal ≡20 MV/m
2ㄘWater immersion 24h ≡18 MV/m

Volume resistivity

1ㄘNormal ≡1.0℅1012次﹞m
2ㄘWater immersion 24h ≡1.0℅1010次﹞m

Bonding strength (Spiral coil method)

Normal ≡100 N

 
Operation instructions:
1) After well mixing part A and B (usually mixing for 30~60 minutes with a motor), the viscosity of the varnish shall be tested.  And then adjust the varnish to meet the requirement of trickling.  The life time of the varnish after mixing is 24h.
2) The rotator and stator coils of the motor shall be heated before impregnating.  The heating time and temperature are up to the size of the motor.  The reference heating time and temperature is: 2 hours at 130⊥ or 10~15 minutes at 190~200⊥.  And then do after-treatment for 3~5 hours at 130⊥.


 

 
 
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