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Neovar B 301 B Class cost Effective Air Drying Varnish

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Excellent Water Resistance

Durable Insulation

Dries fast ensuring rapid service to customers

Provides Stable Hardness

Resists hot Transformer oil

Good Bonding-Firmly bonds the wires

Product Description

NeoVar B 301 is a synthetic resin based, fast drying Insulating Varnish providing B class (Temp. Index 130ºC) insulation. The product is specially designed to provide good insulation and longer life to windings.The product is very cost effective and durable.

 

Application Areas

NeoVar B 301 finds extensive use in the manufacture of Fans , Motors, Stators, Transformers, Radiators etc. Typical applications are in medium and low voltage stator winding of motors, fans, field coils, transformers and chokes. Its good water / moisture resistance makes it ideal for water pump motor. Its quick drying property not only makes it useful as a finishing varnish but also makes it preferable for the rewinders to repair the stators and transformers.


Technical Data
 

Properties

Method

Standard Values

Colour

----

Amber Golden

Viscosity

F/C B-4/ at 30ºC

55 ± 5 secs

Sp. Gravity

at 30ºC

0.90 ± 0.02

Non Volatile matter

2gms/120ºC/1hr

30 ± 2%

Flash Point

Open Cup

38ºC

Effect on enameled wire

----

No reaction

Reaction of Varnish with Copper

----

No reaction

Compatibility with Thinner

Varnish:Thinner

1:8 min

Drying Properties

Touch Dry

At RT

30 - 45 min.

Drying Time in thin layer

At RT

90 - 120 min.

Recommended drying schedule

8-10 hrs At RT or 30 min. at RT & then 4 hrs @100ºC

Specimen curing

At RT

24 hrs

Properties of cured film

Flexibility

Mandrel apparatus

No crack observed

 

Dielectric strength

@ 30ºC @ 130ºC

after 24 hrs immersion in water

65 KV/mm

32 KV/mm

28 KV/mm

Effect of Transformer oil

 

No effect

All the testing have done as per IS : 10026 (Part III) – 1983

Surface Preparation & Application Method

Ensure before application, wire windings are free from moisture and other impurities. NeoVar B 301 can be applied by any suitable method like brushing / pouring / dipping /impregnation.

 

Packing , Storage & Shelf life

Available in 200 gm, 500gm , 900 gm, 4 kg, 21 kg, 180 kg pack sizes. Store in a cool & dry place. Shelf life 1 year from date of manufacture in original sealed container at Room Temperature.












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