Advantages of Oil Filled Capacitors Against Dry Type Capacitors
April 24, 2020
Impregnation is done with the help of non-toxic friendly liquid at a very high vacuum resulting In following advantages: Impregnate fluid replaces air pockets in the zinc spray and help in eliminating partial discharges at the end contacts. Oil impregnated capacitors have much higher partial discharge voltage as compared to DRY TYPE. Jaivic impregnated Oil filled Capacitors are hermetically sealed, hence do not have any atmospheric influence compared to DRY TYPE. Capacitor wound elements are encased in metal containers of adequate thickness. The containers are hermetically sealed. To avoid rusting, metal containers are electroplated which also result in rust-free attractive and durable painting.
Penetration of liquid impregnate is thorough in comparison to semi-liquid impregnate like Polyurethane, Flexible Epoxy etc. Because of its viscous nature. This makes these capacitors more stable because of improved Partial Discharge Inception voltage level.
Level of liquid impregnate is maintained sufficiently above active elements, in comparison to semi-fluid impregnate. In liquid impregnate transfer of heat by conduction and convection mode is fast. This result in uniform cooling of capacitors. In turn reducing temperature rise of active elements. This gives an extra edge by increasing life of the capacitors and to take care of rugged service conditions.
Free flow of impregnate inside capacitor containers, cooling of capacitor is uniform, making it very suitable for tropical and super tropical conditions.
Impregnate fluid replaces air pockets in the zinc spray and help in eliminating partial discharges at the end contacts. Oil impregnated capacitors have much higher partial discharge voltage as compared to DRY TYPE. Jaivic impregnated Oil filled Capacitors are hermetically sealed, hence do not have any atmospheric influence compared to DRY TYPE. Capacitor wound elements are encased in metal containers of adequate thickness. The containers are hermetically sealed. To avoid rusting, metal containers are electroplated which also result in rust free attractive and durable painting.
Penetration of liquid impregnate is thorough in comparison to semi liquid impregnate like Polyurethane, Flexible Epoxy etc. Because of its viscous nature. This makes these capacitors more stable because of improved Partial Discharge Inception voltage level.
Level of liquid impregnate is maintained sufficiently above active elements, in comparison to semi-fluid impregnate. In liquid impregnate transfer of heat by conduction and convection mode is fast. This result in uniform cooling of capacitors. In turn reducing temperature rise of active elements. This gives an extra edge by increasing life of the capacitors and to take care of rugged service conditions.
Free flow of impregnate inside capacitor containers, cooling of capacitor is uniform, making it very suitable for tropical and super tropical conditions.http://www.jaiviccapacitor.com/index.php 3
Consider:
Maximum Load 125 KW
Present P. F. 0.75
Required P. F. 0.99
Maximum demand at 0.75 P. F. = 125 = 166.6 kVA
0.75
Maximum demand at 0.99 P. F. = 125 = 126.26 kVA 0.99
Reduction in Max. Demand = 40.34 kVA
Saving in monthly charges @ Rs. 300/- per kVA (MSEB rates) : Rs. 12,102/-
Size of Capacitors required for this unit.
(Multiplying factor from the table)
For improvement of P.F. – From 0.75 to 0.99 i.e. 0.740
Therefore capacitor size = 125 x 0.740
= 92.5 kVAr , say 95 kVAr.
Total Cost @ Rs. 170/- per kVAr (MPP Capacitors) Rs. 16,150/-
The entire cost is recovered in: Rs. 16,150 = 1.33 Months. = 40 Days
Rs. 12,102
If the penalty for low P.F. & rebate for Power Factor is taken into account this recovery is achieved in still less period of time.
If rebate for better P.F. is considered into calculation, this recovery will be in less than one Month period
You may Buy from Weekooo