Normally Impregnation is done in following manner
1. Insulating & mechanical properties of varnish.
2. Proper filling of gaps & voids.
To achieve & ensure the above two points during varnishing one should use the appropriate varnish & method depending on the geometry of the job. In the modern world the mainly resin impregnation method is used because of better mechanical & insulation strength of resin. Normally the resin & hardener mixture is used.
Normally Impregnation is done in following manner.
Considering the geometry & quantity of the jobs required we have developed following types of varnishing machines. All machines are automatic with manual loading & unloading.
1. BATCH TYPE MACHINES
With heating by passing DC current through electrical winding and varnishing with trickle or dip n roll method.
2. INDEX TYPE MACHINES
Heating with Ceramic radiation heaters or hot air circulation and varnishing by trickle and/or dip n roll method.
3.VACUUM IMPREGNATION PLANTS