VACUUMIMPREGNATIONPLANTS are generally required in Electrical Industry. Impregnation is most important process to improve Insulation Resistance of the electrical components. In turn itimproves life of the component and hence impregnation has become compulsory to each and every electrical components. Vacuum impregnating plants designed for impregnation with Varnishes, are generally suitable for coils LT/HT Motors. This is the most important process for electrical insulation. Design of vacuum impregnating plants depends upon following aspects :-
a) Design, Constructional features, winding details of
components to be impregnated.
b) Impregnant to be used.
C) Class of insulation required
d) Operating temperature
e) Surrounding Environment
Above requirements necessiates a very wide range of impregnating plants. We manufacture all types of vacuum impregnating plants, to meet above requirements. These are suitable for all types of Varnishes, Oils, Epoxy resins Wax, Petroleum Jelly etc. These have following Sailent features :-
In order to enable us to design impregnating plants, following information is essential :
• Physical dimensions of charge and No. of components to be impregnated per batch.
• Impregnant system to be used.
• Working vacuum and working pressure for impregnation.
The components having low operatingvoltages, having less temperature rise, lessoperating cycles, most stable or havinglow electrical stressandhaving large coolingarea components, generally come in this
type of impregnation.
1.1 Process Plant :
The plant will consist ofDipping orImpregnating Chamber of suitable size and Storage Tank with required accessories suchas stirrer arrangement, water chilling system and /or heating system, insulation, additional pressurearrangementfortransferofImpregnant from storage tank toImpregnating Chamber.
2.Vacuum Impregnation :
This methodof Impregnation is most commonly used. Components havinglow cooling space, high operating temperatures, continuous duty cycle, lower diameters of winding wires,high electrical stress etc. and combination ofabovefactors, generally use this Vacuum Impregnation method.
2.1 Process Plant :
The plant will consist of Vacuum Impregnating Chamber, VacuumPumpingsystem, Condenser,and Storage Tank, StChilling system, Heating system, Pressuresystem for transfer of Impregnant andfor additional penetration of impregnant.
3.Trickle Impregnation :
This method is generally used for quick production cycle and individual impregnation of components. Generallyresins are impregnated with this system andfor most componentsheatis generatedbyheatingindividualcomponent.
3.1 Process plant : :
The plant will consist ofindividual and continuous operating system with arrangement for continuous rotating of individual or group of components or component station. Metering of impregnant, pre heating of component by suitable method such asD.C. resistanceheating etc.