NACH Engineering Pvt Ltd  

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Vacuum Pressure Machinery Plants

Vacuum Pressure Machinery Plants

Vacuum Drying & Oil Impregnation Plant
Flood Impregnation Plant
Epoxy Mixing & Pouring Plant
VACUUM IMPREGNATION PLANTS are generally required in Electrical Industry. Impregnation is most important process to improve Insulation Resistance of the electrical components. In turn it  improves 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

1. Unheated impregnating vessel.
2. Impregnant storage tank.
3. Inter-connecting piping, valves.
4. Stoving vessel.
5. Vacuum pumping system.
6. Impregnating vessel pressurising arrangement, with dryer for air/nitrogen.
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.
1) Dipping Method.
2) Vacuum Impregnation.
3) Trickle or Rotary Impregnation.
1.Dipping Method :
The components having low operating voltages, having less temperature rise, less operating cycles, most stable or havinglow electrical stress and having large coolingarea components, generally come in this type of impregnation.
Process Plant :
The plant will consist of  Dipping or  Impregnating Chamber of suitable size and Storage Tank with required accessories such  as stirrer arrangement, water chilling system and /or heating system, insulation, additional pressure  arrangement  for  transfer  of  Impregnant from storage tank to  Impregnating Chamber.
2. Vacuum Impregnation :
This method  of Impregnation is most commonly used. Components having  low cooling space, high operating temperatures, continuous duty cycle, lower diameters of winding wires, high electrical stress etc. and combination of above factors, generally use this Vacuum Impregnation method.
Process Plant :
The plant will consist of Vacuum Impregnating Chamber, Vacuum Pumping system, Condenser, and Storage Tank, StChilling system, Heating system, Pressure  system for transfer of Impregnant and  for additional penetration of impregnant.
3. Trickle Impregnation :
This method is generally used for quick production cycle and individual impregnation of components. Generally  resins are impregnated with this system and for most components heat is generated  by  heating  individual  component.
Process Plant :
The plant will consist of  individual 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 as  D.C. resistance  heating etc.
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NACH ENGINEERING PVT. LTD. was established in 1990, by Anil G. Chaudhary to promote advance technology assets in the transformer industry and provide modern solutions to consumers through NACH branded products. Today the company has a team of professionals experienced in design, research & development and manufacturing of different products based on direct and allied applications of ‘High Vacuum Technology’.