A26F7576 [ETC]
Capacitors for High Current, Power Semiconductor, and DC Applications;
| 型号： | A26F7576 |
| 厂家： | 
ETC |
| 描述： | Capacitors for High Current, Power Semiconductor, and DC Applications |
| 文件： | 总18页 (文件大小：196K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CPD 513
Rev. B
3-00 5k
g
GE Capacitors
Capacitors for High Current,
Power Semiconductor,
and DC Applications
GE TD&IS
Transmission, Distribution & Industrial Systems, Fort Edward, NY 12828
GE Capacitors for High-Current, Power
Semiconductor, and DC Applications
Capacitors for Power Electronics require special high-performance designs for the
varied applications. This catalog describes capacitors for a number of demanding
applications where high currents and/or high voltages are common. Given the special
nature of these applications, care must be taken to ensure that the capacitors are
correctly applied. Information is included to help with the more common application
conditions. An Application Data Sheet is also provided to enlist the help of GE’s
Application Engineers. Please use this sheet if you need assistance or want to verify
your own calculations.
Table of Contents
Page
Description
Application Data Sheet
2
3
Sheet for submitting data to GE for review
General Information on capacitor construc-
Descriptive Information
tion
SCR Commutation
Capacitors
4
7
High and very high-current applications,
such as SCR commutation, SCR and GTO
snubbers, and high-frequency AC circuits
Metallized Polyester
SCR Capacitors
High microfarad per unit volume designs for
up to 250 V peak. Used in high-frequency
chopper circuits
Snubber Capacitors
Power
9
Medium current snubber capacitors for
Semiconductor circuits
Application Data for SCR
and Snubber Capacitors
11
Derating information for Current Pulsewidth
and Temperature. Worked examples for
common conditions
General Purpose DC
Capacitors
13
15
DC Capacitors for voltages up to 2500 V
Brackets for mounting capacitors
Mounting Hardware
© 2000 GE Company
1
Capacitor Application Data Sheet
To ensure correct selection of a capacitor for
your application, please provide the information
indicated below. This sheet may be duplicated
or additional copies may be obtained from GE.
Of particular importance are the voltage and
current waveforms complete with values of
voltage and current over a complete cycle.
Send this data to your local GE Sales
Office or directly to:
General Electric Company
Transmission Systems
381 Broadway
Fort Edward, NY 12828-1000, U.S.A.
Attn: Industrial Capacitor Sales
FAX: (518) 746-5524
PRIMARY INFORMATION (Essential)
Company Name______________________________Tel No. (Incl. Country & City codes) _______________________
Address________________________________________________________FAX No. __________________________
Person to contact:______________________________________________
1. Application: _______________________________________________________
2. Capacitance:________________________ Tolerance:____________________
3. Peak Voltage: _____________________RMS Voltage: ______________________Voltage Reversal(%)________
4. Peak Current: ________________________RMS Current: ______________________
5. Transient Voltage: ________________ Duration: ___________Freq. of Occurence: _______________________
6. Frequency or Repetition Rate (Hz): __________________Duty Cycle: __________________________________
7. Ambient Temperature: ________________Max.: _______________Min.: ______________
8. Capacitor Charge Time: ________________Discharge Time: _____________________
9. Required Operating Life (Hours): _____________________________________________________
10.Waveforms:
+
Voltage
Current
0
-
+
0
-
Time
Time
SECONDARY INFORMATION (Provide as Appropriate)
11. Physical Size Limitations: _________________________________________________________________
12. Mounting Requirements: __________________________________________________________________
13. Applicable Specifications: _________________________________________________________________
14. Type of Cooling Available: _________________________________________________________________
15. Unusual Atmospheric Conditions: ___________________________________________________________
16. Other Special Requirements: ________________________________________________________________
17. Potential Usage: ______________________________
© 2000 GE Company
2
Film/Foil Electrode Construction
Film/Paper Foil Construction
Polypropylene Film
Paper
Polypropylene Film
Polypropylene Film
Foil
Polypropylene Film
Paper
Foil
Polypropylene Film
Polypropylene Film
Foil
Foil
GE’s Foil Electrode capacitors are manufactured
with sheets of high quality aluminum foil as the
electrodes. The dielectric consists of two sheets of
polypropylene film. The film is manufactured in GE’s
own Capacitor Materials Operation. It is specially
designed with a rough surface to allow full impregna-
tion by the dielectric fluid. The aluminum foil elec-
trodes extend, one on each end of the capacitor roll,
so that a solder connection can be made. Depending
on the typical current for the type of capacitor, the
internal connections from the roll ends to the termi-
nals are either braided cables or tin-plated copper
straps. This construction provides capacitors that are
inherently capable of handling high RMS and peak
currents.
DIELECTRIC FLUIDS
All of GE’s dielectric fluids are chosen for
specific characteristics that match the other
components in the capacitor dielectric system and the
applications for which the capacitors are intended.
Each fluid is based on one or two major
constituents and blended with proprietary
additives for optimum performance.
Dielectrol VII
A Benzyl Toluene-based fluid, used for film/foil
high current products.
GE’s Film/Paper/Foil capacitors are manufactured
with high grade film and foil, and capacitor grade kraft
paper. They are typically high voltage DC rated and
are treated with Geconol capacitor dielectric fluid.
These capacitors are exposed foil construction for
use in snubber and or DC filtering applications.
© 2000 GE Company
3
SCR Commutation Capacitors
A97F8600 / A97F8700 Series
600 to 1500 Volts Peak
This family of capacitors is designed for high-current applications, such as
(1) SCR commutation, (2) snubbers for SCRs, GTOs and other power
semiconductors, and (3) for any other circuits where the combination of
frequency and voltage results in high RMS currents. An Application Note is
provided to assist in the proper use of these devices. It is strongly recom-
mended that users refer to GE engineers for assistance if there are any
questions as to the correct selection of capacitors. The A97F8600/
A97F8700 Series have an all-film dielectric and, due to the much lower
dissipation factor, can handle much higher currents than the older film paper
designs.
Advances in capacitor Dielectric technology have made paint
unnecesary, in most cases. This along with GE’s commitment to
environmental programs has led to the elimination of painted cases in
this product line. Removal of the paint has minimal affect on the RMS
current ratings; see the standard ratings charts for proper application.
SPECIFICATIONS
Available Capacitance Range:
1 to 50 µF
Capacitance Tolerance:
± 10%
Capacitance Variation with Temperature:
Rated Voltage:
± 3% from -55 °C to +85 °C
See Ratings Tables. Rating is the Maximum Peak voltage
permissible in either polarity.
Rated Current:
See Ratings Tables. The value given is for derating purposes
only. Refer to the Application Note on Page 12 to determine
the required derating. In no circumstances should the RMS
Current rating of the terminals be exceeded.
Operating Temperature:
Storage Temperature:
Operating Life:
-40 °C to +75 °C
-55 °C to +90 °C
40,000 hours with 95% survival with proper derating
0.02% maximum
Dissipation Factor:
Case Material/Finish:
Oval Case & Cover:
Rectangular Case & Cover:
Unpainted Aluminum
Unpainted Steel
Terminations/Hardware:
1/4 - 20 screw thread studs (60 A RMS maximum)
3/8 - 16 screw thread studs (100 A RMS maximum)
Case Styles C* and D* have 100-A terminals.
Nut and washer hardware is supplied in bag
Dielectric Fluid:
A97F8600/ A97F8700 series:
Dielektrol VII
Internal Protection:
These capacitors do not contain an internal protection
mechanism. The user is responsible for ensuring that the
capacitors are correctly applied for safe use.
© 2000 GE Company
4
SCR Commutation Capacitors
(All Dimensions in Inches)
STANDARD RATINGS *
Case Styles A, C and D
Capacitance
(µF)
Catalog #
Case
Style
Height
c (in)
Current
(A)
600 Volts Peak
2
5
A97F8670
A97F8671
A97F8672
A97F8673
A97F8674
A97F8675
A97F8676
A
A
C
D
D
G
G
2.38
4.50
4.25
5.25
7.25
5.18
6.25
38
86
10
20
30
40
50
136
235
339
414
610
800 Volts Peak
1
2
5
10
20
25
30
A97F8677
A97F8678
A97F8679
A97F8680
A97F8681
A97F8682
A97F8683
A
A
2.62
3.50
3.88
5.75
4.62
5.62
6.25
28
47
92
158
276
340
394
C
C
G
G
G
* ALL UNITS ARE UNPAINTED CASE & COVER
Case Styles C* and D*
Case
Style G
Case Style
a
b
d
f
A
C
D
2.16 1.31 0.81 1.18
2.91 1.91 1.38 1.12
3.66 1.97 1.38 1.12
C*
D*
2.91 1.91 1.25 0.91
3.66 1.97 1.25 0.91
© 2000 GE Company
5
SCR Commutation Capacitors
(All Dimensions in Inches)
STANDARD RATINGS *
Case Styles A, C and D
Capacitance
(µF)
Case
Style
Height
c (in)
Current
(A)
Catalog #
1000 Volts Peak
2
3
5
5
10
10
A97F8614
A97F8615
A97F8616
A97F8617
A97F8618
A97F8619
A
C
C
C*
D
D*
4.75
3.88
4.75
5.25
6.25
6.75
55
71
102
107
182
189
1500 Volts Peak
1
2
3
5
5
A97F8620
A97F8621
A97F8622
A97F8623
A97F8624
A97F8625
A
C
C
C
C*
G
3.88
3.88
4.50
6.25
6.75
5.18
35
58
76
116
121
207
10
* ALL UNITS ARE UNPAINTED CASE & COVER
Case Styles C* and D*
Case
Style G
Case Style
a
b
d
f
A
C
D
2.16 1.31 0.81 1.18
2.91 1.91 1.38 1.12
3.66 1.97 1.38 1.12
C*
D*
2.91 1.91 1.25 0.91
3.66 1.97 1.25 0.91
© 2000 GE Company
6
97F7500 Series SCR Commutation Capacitors
250 Volts Peak
The 97F7500 Series is a special purpose line designed for
applications where a large micro-farad value at low voltage is
required in a small size. The dielectric system is metallized
polyester. Typical applications are in SCR chopper circuits and
low-voltage ac filters. Refer to the Application Note on page 12
for assistance in the correct application of these capacitors.
Please note that previous offering of these capacitors was
with painted cases, to improve heat dissipation. The units
will no longer be painted as part of GE’s committment to
environmental programs. Please note the change in RMS
current ratings from previous catalogs.
SPECIFICATIONS
Available Capacitance Range:
Capacitance Tolerance:
25 to 200 µF
±10%
Capacitance Variation with Temperature:
Rated Voltage:
±3% from -20 °C to +80 °C
250 V Peak. The rating is the Maximum Peak voltage permis
sible in either polarity.
Rated Current:
See Ratings Tables. The value given is for derating purposes
only.Refer to the Application Note on Page 12 to determine
the required derating. In no circumstances should the RMS
current rating of the terminals be exceeded.
Operating Temperature:
Storage Temperature:
Operating Life:
-40 °C to +70 °C
-55 °C to +90 °C
40,000 hours with 95% survival with proper derating
0.6% maximum
Dissipation Factor:
Case Material/Finish:
Oval Case & Cover: Aluminum
Unpainted case and cover
Terminations:
1/4 - 20 screw thread studs (60 A RMS maximum)
Dielektrol VI
Dielectric Fluid:
Internal Protection:
These capacitors do not contain an internal protection
mechanism. The user is responsible for ensuring that the
capacitors are correctly applied for safe use.
© 2000 GE Company
7
97F7500 Series SCR Commutation Capacitors
(All Dimensions in Inches)
STANDARD RATINGS
Capacitance
(µF)
Case Height Current
(A)**
Catalog #
Style
c (in)
250 Volts Peak
50
97F7520
97F7514
97F7513
97F7512
C
D
D
D
3.12
3.50
4.25
4.75
27
45
55
64
100
125
150
* * NOTE ALL RMS CURRENT RATINGS ARE FOR
UNPAINTED UNITS.
Case Styles A, C and D
Case Style
a
b
d
f
A
C
D
2.16
2.91
3.66
1.31
0.81 1.18
1.91 1.38 1.12
1.97 1.38 1.12
C*
D*
2.91
3.66
1.91 1.25 0.91
1.97 1.25 0.91
© 2000 GE Company
8
A28F5000 Series Snubbers Capacitors
1000 and 2000 Volts Peak/ Max DC
The A28F5000 series of Snubber Capacitors are designed for
use in power semiconductor circuits to protect the semicon-
ductor by limiting the rate of voltage rise. The dielectric system
is polypropylene and paper with foil electrodes. The RMS
currents encountered in these circuits are usually low; how-
ever, the peak currents are very high. Refer to the Application
Data for correct application of these capacitors.
SPECIFICATIONS
Available Capacitance Range:
Capacitance Tolerance:
0.05 to 2 µF
±10%
Capacitance Variation with Temperature:
Rated Voltage:
±3% from -30 °C to +80 °C
See Ratings Table. The rating is the Maximum Peak voltage
permissible in either polarity.
Rated Current:
See Ratings Tables. The value given is for derating purposes
only. Refer to the Application Note on Page 12 to determine
the required derating. In no circumstances should the 10
Amp RMS Current rating of the eyelet terminals be
exceeded. For 1/4-20 threaded terminals, full current less
any derating may be applied.
Operating Temperature:
Storage Temperature:
Operating Life:
-40 °C to +70 °C
-55 °C to +90 °C
40,000 hours with 95% survival with proper derating
0.3% maximum
Dissipation Factor:
Case Material/Finish:
Aluminum Case with Steel Cover for eyelet terminal designs;
Aluminum case with Aluminum Cover for *Threaded
terminals.
Terminations:
0.125-in. Solder Eyelets (10 Amp RMS maximum) & 1/4-20
screw thread studs (60 A RMS maximum) For threaded
terminal designs, nut and washer hardware is supplied in bag
Dielectric Fluid:
A28F5500 Series
A28F5600 Series
Dielektrol VII
Dielektrol VII
Internal Protection:
Internal Pressure Sensitive Interrupter for eyelet designs.
Threaded terminal designs do not contain an internal
protection mechanism. The user is responsible for ensuring
that the capacitors are correctly applied for safe use
© 2000 GE Company
9
A28F5000 Series Snubber Capacitors
(All Dimensions in Inches)
Standard Ratings
Capacitance
(µF)
Case
Style
Height
c (in)
Current
(A)
Catalog #
1000 Volts Peak / Max DC
.5
1.0
2.0
A28F5502
A28F5503
A28F5504
A
A
A
2.12
2.12
2.88
6
7
11
2000 Volts Peak / Max DC
.05
.10
.10
.25
.25
.50
.50
1.0
1.0
2.0
2.0
A28F5600
A28F5601
A28F5615
A28F5602
A28F5605
A28F5603
A28F5606
A28F5604
A28F5607
A28F5688
A28F5608
A
A
A *
A
A *
A
A *
A
A *
C
2.12
2.12
2.12
2.12
2.12
2.88
2.88
4.50
4.50
4.25
4.25
2
3
3
4
4
7
7
12
12
17
17
C *
* Denotes 1/4-20 threaded terminal styles
Case Style
a
b
A
C
2.16 1.31
2.91 1.91
© 2000 GE Company
10
Application Data for SCR and Snubbers Capacitors
For use with capacitor series:
A97F8600/ A97F8700
The A97F8672 has a current rating of 136 A.
This Application Note is designed to allow users
Applying the correction factors for a 166 ms
to select the correct capacitor for two common
pulsewidth and a 65 °C ambient:
conditions encountered in power electronic circuits:
RMS current rating = 136 x 0.56 x 0.75
(a) Sinusoidal waveform
= 57.1 A
(b) Squarewave.
This capacitor is satisfactory.
For applications that do not fit into either of these
Note the terminal limit of 60 amps.
categories, please contact your GE sales
representative for assistance.
Example No. 2
To select the correct capacitor proceed as
follows:
Capacitance:
Voltage:
5 µF
60 Vac RMS 16.6 kHz
Sinewave
1.
Determine the following:
(1) Microfarad value required
(2) Peak voltage
Ambient T emperature: 65°C
Peak Voltag
RMS current
= 60 Ö2 = 85 V
(3) RMS current
(4) Current pulsewidth
(5) Capacitor ambient temperature.
= 2p x 16,600 x 5 x 10 -6 x 60
= 31.3 A
Current Pulsewidth
= 3 0 µs
2.
3.
Select a capacitor with the correct
capacitance and a peak voltage equal to or
greater than the application voltage.
The A97F8671 is rated 86 amps which becomes
80.6A with the correction factors. This is more
than adequate. Again, note the 60-A terminal
limitation.
Apply the correction factors on the opposite
page for Current Pulsewidth and Ambient
Temperature to the 55 °C RMS Current
Rating of the selected capacitor.
Example No. 3
Capacitance:
Voltage:
20 µF
600 Vpeak unidirectional
If the “corrected” RMS current value is equal to or
greater than the RMS current of the application, the Frequency:
capacitor is suitable. If not, a capacitor with a higher Rise Time:
squarewave
200 Hz
60 µs
current rating must be selected. This can be done
Fall Time:
60 µs
by choosing a higher voltage capacitor. Note that the Ambient Temperature: 65°C
All-FilmA 97F8600 series has the highest current
ratings.
Peak Voltage
=
600 V
CDV
0.64t
20 x 10-6 x 600
Note: In no case should the actual RMS current
exceed the limit of the capacitor terminals .
-6
I peak =
=
= 313 A
0.64 x 60 x 10
I rms = 313 Ö60 x 10-6 x 200 = 32.4 A
Example No. 1
Capacitance:
Voltage:
10 mF
200 Vac RMS 3 kHz
Sinewave
Current Pulsewidth = 60 ms
The A97F8673 has a peak voltage rating of 600
V and a current rating of 235 A. The correction
factor for 65°C is 0.75, and for a 60 µs pulsewidth
it is 0.90. Thus its current rating in this application is
235 x 0.80 x 0.90 = 158.6 A; adequate for the
application. Again, note the 60A terminal limitation.
Ambient Temperature: 65 °C
Peak Voltage = 200 x Ö2 = 283 Volts
RMS Current = 2p x 3000 x 10 x 10 -6 x 200
= 37.7 A
Current Pulsewidth = 166 µs
© 2000 GE Company
11
SINEWAVE CONDITIONS
SQUAREWAVE CONDITIONS
I = Current (Amperes)
V = Voltage (Volts)
C = Capacitance (Farads)
f = Frequency (Hertz)
t = Current
Pulsewidth (Seconds)
T = Period (Seconds)
CDV
0.64t
pc
2t
pc
t
Ipeak =
DV =
Irms = 2pfC Vrms =
v rms
Vpeak = Ö2 V rms
ft
Öft Ipeak
2 =
Irms =
Ö2[Ipeak
]
Ö2
CORRECTION FACTOR FOR
CURRENT PULSEWIDTH
RMS CURRENT
CORRECTION
FACTOR
CORRECTION FACTOR FOR
AMBIENT TEMPERATURE
RMS CURRENT
CORRECTION
FACTOR
AMBIENT TEMPERATURE- DEGREES C
© 2000 GE Company
12
General Purpose DC Capacitors
1500, and 2500 Volts Peak
This line of General Purpose DC Capacitors is made with
film/paper technology for 1500V and 2500V ratings. These
capacitors are typically used in DC filters at voltages above
those served by electrolytic type construction.
SPECIFICATIONS
Available Capacitance Range:
0.1 to 50 µF
Capacitance Tolerance:
26F Series: ±10%
±5% from -40 °C to +70 °C
Capacitance Variation with Temperature:
Rated Voltage:
See Ratings Tables. The rating is the Maximum Peak dc
voltage.
Ripple Voltage:
The RMS ripple voltage should not exceed the following
percentages of the rated voltage for these frequencies:
Frequency
60 Hz
120 Hz
400 Hz
1,000 Hz
10,000 Hz
% of Rated Voltage
30
20
14
8
1
Operating Temperature:
Storage Temperature:
Operating Life:
-30 °C to +70 °C
-55 °C to +90 °C
60,000 hours with 94% survival with proper derating
0.3% maximum
Dissipation Factor:
Case Material/Finish:
Terminations:
Aluminum Case (NO PAINT)
(2) 0.25 x 0.031 inch quick connect blades, and one fork
blade per terminal
Dielectric Fluid:
Dielektrol VII
Internal Protection:
Pressure Sensitive Interrupter
© 2000 GE Company
13
General Purpose DC
STANDARD RATINGS
Capacitors
Capacitance
Case
Style
Height
Catalog #
(All Dimensions in Inches)
(µF)
c (in)
1500 Volts Peak
1
2
4
5
6
A26F7500
A26F7501
A26F7502
A26F7503
A26F7504
A26F7505
A26F7506
A
A
C
C
C
C
D
2.12
3.12
3.12
3.88
4.25
5.25
5.25
8
10
2500 Volts Peak
0.1
0.25
0.5
1.0
2.0
A26F7515
A26F7516
A26F7517
A26F7576
A26F7519
A26F7520
A
A
A
A
A
C
2.12
2.12
2.12
3.12
4.25
4.25
4.0
Case Style
a
b
A
B
C
D
2.16
2.69
2.91
3.66
1.31
1.56
1.91
1.97
© 2000 GE Company
14
Mounting Hardware
(All Dimensions in Inches)
FOOTED BRACKETS FOR
OVAL CASE STYLES
(2 per Capacitor)
For the proper bracket, match the
capacitor case height to the case
height shown next to the bracket part
Case
Height
Bracket Part
Number
2.12
2.38
2.62
2.88
3.12
3.50
3.88
4.25
4.50
4.75
5.25
5.50
5.75
6.25
6.75
7.25
302C920000210
302C920000200
302C920000200
302C920000113
302C920000179
302C920000119
302C920000115
302C920000122
302C920000211
302C920000116
302C920000153
302C920000233
302C920000209
302C920000152
302C920000213
302C920000214
Case
Style
d
e
**A 2.56 3.00
B
C
D
3.13 3.56
3.38 3.81
4.13 4.56
** Cannot be used on “A” base
size units with threaded
terminals (Aluminum covers).
FOOTED BRACKETS FOR
RECTANGULAR CASE STYLE G
(2 per Capacitor)
Case
Height
Bracket Part
Number
5.18
6.25
7.25
8.00
9.00
302C920000189
302C920000190
302C920000207
302C920000194
302C920000196
© 2000 GE Company
15
Mounting Hardware
(All Dimensions in Inches)
UNIVERSAL WRAPAROUND
BRACKETS
FOR OVAL CASE STYLES
Case
Style
Bracket Part
number
d
e
A
B
C
D
128A2244AC021 2.69
128A2244AB025 3.27
128A2244AB022 3.44
128A2244AB023 4.19
3.13
3.70
3.88
4.63
WRAPAROUND BRACKETS
FOR OVAL CASE STYLES
Case
Style
Bracket Part
Number
d
e
w
t
A
B
C
D
9827065000021
9827065000031
614A301000061 3.31 3.81 0.75 0.03
614A301000051 4/06 4.56 0.75 0.03
2.56 2.94 0.50 0.02
3.06 3.50 0.63 0.02
© 2000 GE Company
16
Please contact your GE Sales Reresentative for further
information, or write to:
GE Industrial Systems
Transmission, Distribution & Industrial Systems
381 Broadway
Fort Edward, NY 12828-1000
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