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Type LJ High Voltage Capacitors Paper-Mylar

The data contained herein shows only a PARTIAL LISTING of items available for this product line and it gives only a CONDENSED VERSION of the applicable specifications and characteristics. Request our complete catalog for full information!

 

Type LJ capacitors represent the best designs for very high voltage circuits. All standard items are low inductance construction, housed in a rectangular phenolic case. Type LJ capacitors are designed for high voltage application with plastic-paper dielectric capacitor elements. Connections are made to the extended foil sections with medium-heavy wiring allowing large discharge current. Consult factory for current and repetition rate limits. Applications include; power supply filters, discharge, pulse forming networks, bypass, and arc and spark suppression.

Capacitance Tolerance standard is ±10%, however type LJ capacitors may be ordered with a ±5% tolerance.

Temperature Range is -55ºC to 65ºC. No derating of voltage is necessary over this range.

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Dielectric Resistance (parallel resistance) Minimum acceptable resistance is 10,000 megohms per microfarad or 10,000 megohms. Which is less.

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Peak Ripple Voltage plus the DC voltage must not exceed the nameplate voltage. As a general rule, the acceptable peak-to-peak ripple voltage (expresses as a percent of the nameplate voltage) for a given frequency is listed below. This is not valid at higher voltages and larger capacitance values. An inquiry should be sent to the factory regarding suitability of the application.

FREQUENCY RIPPLE VOLTAGE (P-P)
60Hz. 25%
120Hz. 20%
400Hz. 5%
1000Hz. 3%

Test Voltage is 150% of nameplate voltage for two minutes in air at room temperature.

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Impregnant is a highly redefined/purified and inhibited mineral oil with a flash point greater than 145ºC when measured per method 110.3.4 specification V V-L-791.
Dielectric is a combination of polyester film and Kraft capacitor tissue. Aluminum foils constitute the plates ad the capacitor sections have extended foils insuring low I²R losses and low inductance.
Case is fabricated paper-phenolic with flexible side walls, permitting the case to be completely filled with the impregnant. This feature provides expansion and contraction of the oil over the temperature range.
Terminals on type LJ suffix B (for styles B) are ¼-20 brass screws. Other size terminals or threaded inserts may be supplied on special order.
Mounting Foot has holes for ¼-20 screw - small bases have 2 holes and large base sizes have 4 holes.
How To Order - Select the part number from the list and add suffix "-5", if 5% capacitance tolerance is required. For other styles call (773) 489-2233 or E-Mail us for further information.

30 KVDCW

 

100 KVDCW

Part Number

Cap. MFD. A B C D  

Part Number

Cap. MFD. A B C D
LJ300-101BF .01 2-3/4 1-3/4 6 4   LJ1000-202BF .002 2-3/4 1-3/4 14 4
LJ300-503BF .05 2-3/4 2-3/4 6-1/2 5   LJ1000-103BF .011 4-3/4 1-3/4 14 6
LJ300-104BF .10 4-3/4 3-3/4 6 6   LJ1000-503BF .05 6-3/4 3-3/4 15 8
LJ300-254BF .25 6-3/4 4-3/4 6-1/4 8   LJ1000-104BF .10 8-3/4 5-3/4 14 10
LJ300-504BF .50 10-3/4 5-3/4 6 12   LJ1000-254BF .25 10-3/4 7-3/4 18 12

50 KVDCW

 

150 KVDCW

LJ500-103BF .01 2-3/4 1-3/4 6 4   LJ1500-202BF .002 2-3/4 1-3/4 21 4
LJ500-503BF .05 4-3/4 2-3/4 9-1/2 6   LJ1500-103BF .01 3-3/4 2-3/4 23-1/4 5
LJ500-104BF .10 6-3/4 3-3/4 8-1/4 8   LJ1500-503BF .05 6-3/4 5-3/4 21 8
LJ500-204BF .20 8-3/4 5-3/4 9 10   LJ1500-104BF .10 10-3/4 5-3/4 21 12

LJ500-304BF

.30 10-3/4 5-3/4 9 12   LJ1500-154BF .15 10-3/4 7-3/4 23 12

80 KVDCW

 

200 KVDCW

LJ800-502BF .005 2-3/4 3-3/4 1-3/4 11   LJ2000-102BF .001 2-3/4 1-3/4 26 4
LJ800-103BF .01 4-3/4 4-3/4 1-3/4 11   LJ2000-502BF .005 4-3/4 1-3/4 26 6
LJ800-503BF .05 6-3/4 5-3/4 3-3/4 12   LJ2000-103BF .01 4-3/4 2-3/4 27 6
LJ800-104BF .10 8-3/4 6-3/4 5-3/4 11   LJ2000-503BF .05 8-3/4 5-3/4 26 10
LJ800-254BF .25 10-3/4 10-3/4 7-3/4 12   LJ2000-104BF .10 10-3/4 7-3/4 27 12

There will be size variations from those shown for some styles. Contact us for more information.