❖       Provides shiny surface finish

❖   Ability to penetrate deep

❖       Durable Insulation & Stable Hardness

❖       Excellent Electrical Properties

❖      Rapid Drying as such ensures quick service

❖       High Bonding and hence firmly holds the wires

❖       Resists Moisture / hot transformer oil / mild acids, alkalis

Product Description

NeoVar AD 401 is a Phenolic resin based quick air drying varnish providing Class B (Temp. index 130⁰C) insulation. Its unique blend of properties makes it suitable for versatile application. The product due to its quick baking property increases productivity & reduces electricity consumption. Ensures durable insulation at elevated temperature of 130⁰C & even under humid conditions. Ensures 100 % insulation even at inaccessible areas due to its deep penetration property & thus provides longer life to winding.

 

Application Areas

NeoVar AD 401 finds use in insulation of motors, alternators, generators, fans, transformers and chokes. Also finds application in windings, electric components, phenolic laminates & moulding, circuit boards, stamping stacks etc as a finishing varnish. It is best suited for rewinding in all types of windings, small armatures, high speed motors, oil cooled transformer & applications under chemically aggressive atmosphere. The product yields superior results if a drying schedule of 30 mins. in air & then 2-3 hrs at 110-120⁰C is followed.

Properties	Method	Standard Values
Colour	----	Golden yellow liquid
Viscosity	F/C B-4 / at 30ºC	25 – 35 secs
Sp. Gravity	at 30ºC	0.89+- 0.02
Non Volatile matter	2gms/120ºC/1hr	46+ 1 %
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	30-40 min.
Drying Time in thin layer	At RT	90-100 min.
Recommended drying schedule	4 - 6 hrs At Room Temperature or 3 - 4 hrs At 70ºC
Properties of cured film
Flexibility	Mandrel apparatus	No crack observed
Dielectric strength	@ 30ºC @ 130ºC after 24 hrs immersion in water	73 KV/mm 58 KV/mm 43 KV/mm
Effect of Transformer oil		No effect
Temperature Index	By TGA in air	175ºC
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 AD 401 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.