Why a Power Capacitor is needed
Conservation of Energy due to LT Shunt Capacitors is an established fact. Needless to say that these Capacitors have contributed significantly in Electrical Installations by way of reduction in KVA demand for specific KW Loads, thereby saving on electricity Bills. Higher Capacity utilisation of Transformers, connecting cables and switchgears are direct saving for given specific load. These capacitors are also useful in system voltage stabilisation and distribution.

SARDA Power Capacitors are manufactured in controlled atmosphere and with modern technology to improve Power factor of Electrical Installation of all kinds of industries and in agriculture pumpsets. The Capacitors are made of Heavy edge zinc alloy metallised PP film and dry construction.

ADVANTAGE OF USING POWER CAPACITORS:
To increase the efficiency of the electrical system, power factor is improved by providing power capacitors in the electrical system. Some of the major advantages of using power Capacitor are :-

• Reduction in Electricity bill.
• Reduction of power losses.
• Improvement in Voltage regulation.
• Meet statutory requirement & avoid penalty.

CONFIGURATION HIGHLIGHTS :
	Advanced vapour coating techniques involving high degree of purity of metal, coupled with heavy edge gives added advantages to metallised Polypropylene film of self healing type to handle higher currents and withstand the electrical surges that are predominantly observed in the Power systems.
	Effects of harmonic currents are minimized by using suitable filter networks in conjunction with these Capacitors which can be supplied on specific request.
	In rush current limiting coils are used for longer life of Capacitors.
	Low watt losses i.e. , <0.5 watt/KVAr.
	Higher insulation properties.
	Modular design : For easy maintenance as the modules are replaceable.
	Burst Proof Design : Due to system overloads, pressure developed due to any internal fault of the Capacitor will disconnect the electrical connection of the module and safe guard the nearby equipment.
	Box (Housing) for Capacitor is provided with Louvers for free air ventilation thereby keeping operating temperature at lower levels and increasing life of the Capacitors.
	KVAr ratings are from 1 KVAr to 50 KVAr. Banking of KVAr units is also undertaken by us for higher KVAr ratings requirements.
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TYPES:           STANDARD        HEAVY DUTY         DOUBLE DIELECTRIC       ALUMINIUM CYLINDRICAL

STANDARD TYPE
These Capacitors are light weight and compact in size have been designed keeping in view, the normal duty cycle present in various utilities. These Capacitors are used for almost constant loads having negligible variations.
HEAVY DUTY TYPE
These Capacitors have been designed to suit fluctuating load conditions and withstand over-voltage and over-currents within permissible limits. These Capacitors are stronger than standard type to withstand required dielectric stress which varies non-linearly.
DOUBLE DIELECTRIC TYPE
Aiming at replacing the conventional mixed dielectric and film-foil oil type capacitors, our double dielectric type is designed to suit continuous operation for heavy duty application particularly where presence of harmonics plays a prominent role. These Capacitors are mechanically robust and electrically stable to withstand combined effects of thermal and electrical stresses prevalent in major industries.
ALUMINIUM CYLINDRICAL TYPE
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	SPECIAL FEATURES
	ISI marked
	Approved by various State Electricity Boards.
	Self Healing MPP Film with Heavy Edge Metallization.
	Manufactured with latest state of art technology
	High Insulation Properties
	Low Losses and longer life
	Dry Construction
	Burst-proof modules.
	Compact Size
	Better power handling capacity
	With/without inductor coil
	Non-modular / modular construction
	Multiple modules per rated output
	Quality system ISO:9001-2000
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ELECTRICAL PARAMETERS:
Sl.No.	Electrical Characteristics	Standard	Heavy Duty	Double Dielectric	Aliminium Cylindrical
1	Rated Voltage (VAC)	250 / 415 / 440	415 / 440	415 / 440	400/440
2	Max Over Voltage (Max 8Hrs per day)	1.1 Rated	1.2 Rated	1.3 Rated Volt	1.1 Rated Volt
3	Max. Over Current * (Short Duration)	1.3 Rated	1.4 Rated	1.6 Rated	1.3 Rated
4	Rated Frequency (Hz)	50	50	50	50
5	Capacitance Tolerance	-5% to + 10%	-5% to + 10%	-5% to + 10%	-5% to + 10%
6	Temperature Category	-5 C to 50 C	-5 C to 50 C	-5 C to 50 C	-5 C to 50 C
7*	Losses	5 x 10 - 4	5 x 10 - 4	5 x 10 - 4	5 x 10 - 4
8	Max. Ambient Temp.	50 C	50 C	50 C	50 C
9	Max. Avg. Temp. Over 24 Hrs	40 C	40 C	40 C	40 C
10	Max. Avg. Temp. Over 1 Year	30 C	30 C	30 C	30 C
11	Internal Connection	Single Phase Three Phase Delta	Three Phase Delta	Three Phase Delta	Single Phase ThreePhase Delta
12	Application	Indoor	Indoor	Indoor	Indoor
13	Insulation Level (KVAC)	3/-	3/-	3/-	3/-
14	Discharge Device	External	External	External	External
15	Ref. Standard IS:	13340-1993-1334-1992
16	Ref. Standard IEC	60831-1(2002)
* Altered Voltage and Rated Frequency
* After Stabilization

 

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POWER CAPACITOR BOX DIMENSIONS (in mm)

Rated KVAr	STANDARD TYPE			HEAVY DUTY			DOUBLE DIELECTRIC
	Length	Width	Height	Length	Width	Height	Length	Width	Height
1	120	45	130	150	60	190	170	60	245
2	145	50	170	185	65	190	180	65	265
3	170	65	210	185	65	190	190	65	295
4	170	65	210	185	65	315	215	75	295
5	170	65	220	185	65	315	215	75	420
6	170	65	220	185	65	315	215	75	420
7	210	70	240	210	75	315	215	75	420
8	210	70	240	210	75	315	215	150	420
9	210	70	240	210	75	315	215	150	420
10	210	70	242	220	80	425	270	200	465
12	250	90	375	220	80	425	270	200	465
12.5	250	90	375	250	98	425	270	200	465
15	250	90	375	250	90	425	270	270	465
20	220	160	375	270	160	425	375	375	485
25	220	160	375	220	160	425	375	375	485

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Selection of Power Capacitors

With the advancement of Technology in the Capacitor field, new designs to suit common industrial and agricultural requirements including that of Rolling Mills, Induction Furnaces, Thyristor controlled Drivers both AC & DC) Heavy presses, Rectifiers, Advance welding system and other such loads, have been developed.

Standard	Heavy Duty	Double Dielectric
Utilities having steady uniform inductive loads like	Utilities having variable inductive loads and with total harmonic distortion not exceeding 5% like medium scale industries	Utilities having variable and fluctuating inductive loads and with total harmonic distortion not exceeding 8% like
Agricultural pump sets	Garment industries	Steel Rolling mills
Commercial establishments	Fabrications	Cement Industries
Small scale Industries etc.,	Welding shops	Textiles
	Machine Shop & Tool Room	Heavy chemical industries
	Room	Pharmaceutical industries
	Steel wire drawings	Sugar plants
	Bakeries	Automobile plants
	Floor mills	Paper industries
	Coffee curing works	Agro product industries
	Control Panels	Food processing plants
	Oil mills	Granites & Stone polishing units
	Steel melting	Animal feed industries
	Glass industries	Wind mills
		Heavy welding equipments
		Power Frequency induction furnaces
		Steel Melting industries etc.

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