Capacitors

Questions  
1.      What is the specification of a Capacitor?
2.      What are the different types of Capacitors available?
3.      What is the Standard Operating Voltage?
4.      What is the dimension of Capacitors?
5.      How much current can each KVAr deliver?
6.      How do I decide my kVAR requirements?
7.      Can Capacitors be used under Harmonic conditions?
8.      What is the delivery time?
9.      What are the advantages of these Capacitors?
10.   Do you supply HT Capacitors?
11.   What is the voltage ranges available for HT Capacitors?
12.   What type of Capacitors is available for HT applications?
13.   How do I connect to a HT Capacitor?
14.   Do you supply vacuum contactors to connect HT Capacitors?
15.   What is the delivery period for HT Capacitors?
16.   Do you supply complete Capacitor panel?
17.   What do you mean by Factory Ganged?
 

Answers  

1.0        What is the Capacitor specification?
1.1       Metalized Double Polypropylene (MPP) Dielectric, Cylindrical or Prismatic type.

2.0        What are the different types of Capacitors available?
2.1

Sl.No.	Model	KVAr Rating Available
1.	Standard (MPP-S) - Cylindrical type, 440V, 50Hz	1,2,3,4,5,6,7.5,10,12.5,15
2.	Heavy Duty (MPP-H) Cylindrical type, 440V, 50Hz	5,10,12.5,15,20,25,30,40,50
3.	Standard (MPP-S) - Prismatic type, 440V, 50Hz	1,2,3,4,5,6,7.5,10,12.5,15,20,25 Factory ganged (above 25kVAR) 30(15*2), 40(20*2), 50(25*2), 60(20*3), 75(25*3), 80(20*4), 100(25*4)
4.	Heavy duty (MPP-H) Double Dielectric - Prismatic type, 440v, 50Hz	5,10,15,20,25 30(15*2), 40(20*2), 50(25*2), 60(20*3), 75(25*3), 80(20*4), 100(25*4)
5.	Special Heavy duty Double Dielectric (MP-HL) - Prismatic type, 440v, 50Hz	5,10,15,20,25
6.	Heavy Duty (MPP-H) Cylindrical type, 520V, 50Hz	5,10,12.5,15,20,25

3.0        What is the Standard Operating Voltage?
3.1       415-440 Volts, 50 Hertz. Optionally, we can also supply 480 Volts, 520Volts,              550 Volts Cylindrical Heavy Duty Capacitors at a special price.

4.0        What are the dimensions of the Capacitors?
4.1   

Sl.No	Model	KVAr Rating	Dimension in mm
			Dia(f)xLength(mm)	LxWxH (mm)
1.	Standard (MPP-S) Cylindrical type	1-5	64x210	-
		6-9	85x230	-
		10-15	85x290	-
2.	Heavy Duty (MPP-H) Cylindrical type	5 -15	85x245
		20, 25	110x245
		30, 40, 50	145x400
3.	Standard (MPP-S) - Prismatic type	1-2		140x50x200
		3-5		180x60x240
		6-9		200x70x320
		10-15		200x140x320
		20-25		220x150x320
4.	Heavy Duty (MPP-H) Double Dielectric - Prismatic type	5		180x60x320
		10 &15		220x150x320
		20		220x220x320
		25		290x220x320
5.	Special Heavy Duty (MPP-SH) Double Dielectric - Prismatic type	10		220x150x420
		15		220x220x425
		20&25		290x220x425

5.0        How much current can each KVAr deliver?
5.1       Each KVAr of Capacitor will deliver-
                   o       1.4 Amps at 400-415 Volts
                   o       1.3 Amps at 440 Volts

6.0        How do I decide my kVAR requirement?
6.1       To decide the kVAR requirement, one must keep in mind the following
             ·        System PF at full load
             ·        Desired PF
             ·        Type of PF compensation required i.e., Centralization or Decentralization.                       Centralization is total PF compensation and Decentralization means                       individual load PF compensation  

7.0        Can Capacitors be used under Harmonic conditions?
7.1       Yes. It depends upon the type of Capacitor used. If harmonics content in THD              is more than 20% then contact us

Types of Capacitors	Permissible percentage - non linear loads
MPP - S	10%
MPP - H	15%
MPP - H (Cylindrical)	20%
MP - HL	20%

8.0        What is the delivery time?
8.1       On availability of stocks the product can be dispatched within 2 - 3 days from              the receipt of the technically and commercially cleared PO. Otherwise, it will              take about 4 - 6 weeks.

9.0        What are the advantages of these Capacitors?
             o       Longer life.
             o       Very compact hence reduces the panel size.
             o      Very easy to connect & disconnect because it has movable terminal                       block for connection of 3 Phase Voltage (cylindrical, heavy duty).
             o      Very easy to mount inside the panel because it has one centralised bolt                       at the bottom that firmly holds the Capacitor.             
             o       It is suitable even for filter panels for harmonic observation.
             o      Because of longer life and high quality it ensures constant improvement                       of system Power Factor.

10.0        Do you supply HT Capacitors?
10.1       Yes, we can supply HT Capacitors.

11.0        What are the voltage ranges available for HT Capacitors?
11.1       We can supply any voltage rating for HT Capacitors.

12.0        What type of Capacitors are available for HT applications?
12.1       Star connected 3 Phase HT Capacitors are available. We can also supply                 single phase HT prismatic type Capacitors.

13.0        How do I connect to a HT Capacitor?
13.1       To connect HT Capacitors it is necessary to use Breaker or Vacuum                 Contactors.

14.0        Do you supply vacuum contactors to connect HT Capacitors?
14.1       Yes, we can supply vacuum contactors to connect HT Capacitors but not                 breakers.

15.0        What is the delivery period for HT Capacitors?
15.1       The delivery period is 4-6 weeks.

16.0        Do you supply the complete Capacitor panel?
16.1       Yes, we do supply the Power Factor Panel. Please refer our catalogue on PFI                 panel for more information or contact Schneider Electric Conzerv.

17.0        What do you mean by Factory Ganged?
17.1       In case the customer requires more than 25kVAR as a single unit, then we                can assemble to different rating of Capacitors with the help of bus bar and                house it in a single enclosure. E.g., 40kVAR (20*2)