These capacitors are used in AC power applications like CVT & UPS Systems (up to 660V AC).
Sl. No. |
MFD Value |
Voltage |
aluminum Can (sizes in mm ) |
|
1 |
2 |
600 / 660 |
30 |
x |
52 |
45 |
x |
68 |
45 |
x |
68 |
45 |
x |
97 |
50 |
x |
97 |
50 |
x |
97 |
63.5 |
x |
132 |
63.5 |
x |
132 |
63.5 |
x |
132 |
|
2 |
6 |
600 / 660 |
3 |
10 |
600 / 660 |
4 |
16 |
600 / 660 |
5 |
20 |
600 / 660 |
6 |
25 |
600 / 660 |
7 |
36 |
600 / 660 |
8 |
40 |
600 / 660 |
9 |
50 |
600 / 660 |
DIMENSION CHART FOR CVT:
Sl. No. |
MFD Value |
Voltage |
Can (sizes in mm) |
|
1 |
4 |
500 / 550 |
35 |
x |
68 |
35 |
x |
68 |
38 |
x |
97 |
38 |
x |
97 |
45 |
x |
97 |
45 |
x |
122 |
50 |
x |
122 |
|
2 |
6 |
500 / 550 |
3 |
8 |
500 / 550 |
4 |
10 |
500 / 550 |
5 |
20 |
500 / 550 |
6 |
25 |
500 / 550 |
7 |
30 |
500 / 550 |
These are special type of capacitors made of heavy edge Zn-Al Alloy metallised polypropylene capacitors for handling higher currents and withstands higher temperature ensuring higher insulation properties, with very low dissipation factor and hence heat dissipation is minimum.
These capacitors have an advantage of compact size, easy handling coupled with inbuilt safety mechanism, which disconnects the capacitor in the event of any abnormal conditions like over voltage or currents.
For CVT: |
For UPS: |
As the name itself suggests, the equipment is designed to give constant voltage supply at the out put terminals, irrespective of the variations in the input stage. This works on the principle of resonant LC circuits.
Capacitor is used as a component in the tuned LC circuit of a ferroresonant or constant voltage power source. These are designed for continuous duty cycle operation or as per the customer's specific requirements. |
The conversion of DC Power to AC Power at power frequency by the use of inverter principle is incorporated in uninterrupted power supply. AC power supply given by this source, in the absence of main power supply from electricity board is called uninterrupted power supply. The output from this source is pure sine wave and the capacitors are used in the AC input stage as filters which also gives additional advantage as a power factor correction to the unit. All these capacitors are designed to take care of harmonics upto total of 5% THD (Total Harmonic Distortion). If it exceeds this limit, it would be necessary to use harmonics fillers in order to filter out unwanted frequencies, which can cause heating effect due to high current drawn by the capacitor. |
NOTE: Selection of suitable capacitors plays a very crucial role in the life expectancy of the capacitors. Hence it is absolutely necessary to use proper capacitor value with voltage/current rating matching the specific application.
NOTE: Capacitors are housed in aluminum cylindrical can and provided with bottom studs for easy mounting.Capacitors above 10 MFD value can be provided with screw type terminal for handling higher currents and also for better mechanical fitment with cable lugs.
NOTE: Proper selection of the capacitance value will enhance the performance and life expectancy of the capacitor in the tuned circuit.
QUESTIONAIRE FOR PURPOSE FOR UPS & CVT APPLICATION |
