LT Shunt Power Capacitors

LT Shunt Power Capacitors

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.

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.

  LT Shunt Power Capacitors
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

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
   

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


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

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.