EPR Datasheet

EPR
Vishay ESTA
High Voltage DC Capacitors
RIPPLE
% RIPPLE
The sum of the peak ripple voltage and the DC voltage
should not exceed the rated voltage. Refer to graph fig. 1 for
permissible peak-to-peak ripple voltage as a percentage of
rated voltage for various frequencies.
30
20
10
TYPE EPR
The EPR range of capacitors are manufactured using a
mixed dielectric material that consists of polyester
/polypropylene film and capacitor tissue. They are
impregnated and filled with a mineral oil. The container is a
robust rectangular polypropylene case. The internal
construction is designed to prevent movement when the
capacitor is subjected to mechanical shock or vibration. An
inert welding process ensures hermetic sealing. Standard
terminations are M10 threaded inserts which eliminates the
necessity for large voltage terminals. The case has an
extremely low affinity for moisture and is resistant to virtually
all electrical environments. Brackets can be welded on as
required.
Note
• The impregnant used is a non toxic highly purifiedand inhibited
mineral oil.
APPLICATIONS
The EPR range is designed specifically for DC
applications such as filters:
• Coupling
• Rapid discharge
100
1000
10 000
FREQUENCY Hz
Fig. 1
POWER FACTOR
The power factor is variable, and is a function of temperature
and frequency see fig. 2. Nominal value < 0.5 % at 20 °C
at 20 °C
2%
Power Factor
vs.
Temperature
1 kHz
1%
50 Hz
0%
- 20
0
40
65 80
Fig. 2
DIELECTRIC RESISTANCE
(Parallel resistance) is indicated by the graph of insulance
(MΩ x μF) vs temperature fig. 3. The insulance (MΩ x μF) is
nominally 10 000 s at + 20 °C. (Measurements taken after 1
minute with an applied voltage of 500 V)
MΩ x MF
• By-pass
0
10
• Pulse forming networks
105
104
103
• Radar
102
• Laser
Insulance vs. Temperature
Typical Values
- 40
0
40
80
Fig. 3
• X-ray equipment
LIFE EXPECTANCY
Temperature range is - 40 °C to + 85 °C. Derating is required
for operation at higher temperatures.
TEMPERATURE COEFFICIENT
Capacitance will increase by 2 % per 100 °C temperature
rise.
EPR type capacitors are designed for a life exceptancy of
50 000 h at 65 °C. To achieve the same life expectancy at
85 °C derate to 60 % of rated voltage fig. 4.
Hours
TEMPERATURE RANGE
105
104
103
CAPACITANCE RANGE
0.002 μF to 2 μF. The tolerance is ± 10 %. Other tolerance
are available on request. Normal values measured at 1 kHz.
102
50
100
150 °C
Rated Voltage
Fig. 4
Document Number: 13016
Revision: 11-Aug-10
For technical questions, contact: [email protected]
www.vishay.com
1
EPR
High Voltage DC Capacitors
Vishay ESTA
VOLTAGE RANGE
TYPE DESCRIPTION
1000 VDC to 300 000 VDC
PART NUMBER
TEST VOLTAGE
15 kVDC
EPR150-104
30 kVDC
EPR300-504
50 kVDC
EPR500-103
Terminal/terminal (Vt/t)
For DC rating < 20 kV
Vt/t = 2.0 x rated voltage 60 s
For DC rating > 20 kV
Vt/t = 1.5 x rated voltage 60 s
DIMENSIONS in millimeters
A
6
C
www.vishay.com
2
B
CAP.
μF
A
B
C
0.1
75
75
142
0.5
130
220
185
0.01
70
90
245
0.5
175
235
280
0.05
80
110
365
0.1
115
130
365
0.25
175
190
365
0.025
80
90
420
EPR1000-403
0.04
120
200
285
EPR1000-104
200 kVDC
EPR2000-502
300 kVDC
EPR3000-252
0.1
125
175
445
0.005
90
90
385
0.0025
70
95
555
EPR500-504
75 kVDC
EPR750-503
EPR750-104
EPR750-254
100 kVDC
EPR1000-253
For technical questions, contact: [email protected]
Document Number: 13016
Revision: 11-Aug-10
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