General conditions

LAK 380  - alkyd phenolic impregnating varnish, class H, high bond, high flash point. LAK 380 is a high flash, alkyd phenolic, which produces tough resilient insulating films with excellent electrical and bond strength characteristics at all operating temperatures up to Class H (180 °C). The varnish gives excellent penetration into winding with clean drainage and low usage larger tanks. The cured products has exceptionally good resistance to moisture an insulating oils, together with full cure in the deeper sections of winding. Good flexibility is shown around fly leads, and compatibility with all normal insulating systems is achieved.

Application

A quality general-purpose varnish for impregnation of transformers, chokes, relays and fields, together with most types of electrical motoros.

Specification

Viscosity: 115 – 145 s   Ford 4 at 20 °C
Non-volatile content: 45 - 50%
Density: 0,92–0,94 g/cm³
Flash point: 40 °C
Shelf life: 12 months at 20 °C

Proccessing     

Method:                cold, hot dip or vacuum impregnation
                   Cold dip             Hot dip or vacuum
Viscosity:     65 – 120 s              65  -  150 s
Reducer: Xylen