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HCMC FILTERED INDUSTRIAL FIXED SERIES PFC CAPACITORS

Power Factor Correction Capacitor HCMC
SIZES AVAILABLE
kVAR

240 VAC Catalog Number

480 VAC Catalog Number

600 VAC Catalog Number

25

324025HCMC

348025HCMC

360025HCMC

30

324030HCMC

348030HCMC

360030HCMC

50

324050HCMC

348050HCMC

360050HCMC

60

324060HCMC

348060HCMC

360060HCMC

75

324075HCMC

348075HCMC

360075HCMC

90

324090HCMC

348090HCMC

360090HCMC

100

3240100HCMC

3480100HCMC

3600100HCMC

120

3240120HCMC

3480120HCMC

3600120HCMC

125

3240125HCMC

3480125HCMC

3600125HCMC

150

3240150HCMC

3480150HCMC

3600150HCMC

200

3240200HCMC

3480200HCMC

3600200HCMC

250

3240250HCMC

3480250HCMC

3600250HCMC

300

3240300HCMC

3480300HCMC

3600300HCMC

350

3240350HCMC

3480350HCMC

<>3600350HCMC

 

400

3240400HCMC

3480400HCMC

3600400HCMC

450

3240450HCMC

3480450HCMC

3600450HCMC

500

3240500HCMC

3480500HCMC

3600500HCMC

550

3240550HCMC

3480550HCMC

3600550HCMC

600

3240600HCMC

3480600HCMC

3600600HCMC

 

HARMONIC DISTORTION

Harmonic distortion is the resulting non-sinusoidal current waveform generated by a non-linear load. The most common non-linear load is a pulse rectifier which is used in most switch mode power supplies (solid state variable speed AC and DC drives and uninterruptible power supplies). The distorted current waveform generates a distorted source voltage due to the electrical power system impedance. A distorted waveform can be analyzed by decomposing it into a fundamental component (line frequency) and higher frequency components of varying amplitude. The effects of harmonic distortion on metallized film capacitors used in the construction of the power factor correction equipment are (1) higher operating temperature because of higher I2R losses and (2) higher voltage stress on the dielectric fluid in the capacitor cells. Both of these factors will shorten the life of the power factor correction capacitor cells if they are not protected by tuning filter reactors.

General

The DMC Series is a “dry” capacitor cell design which incorporates high quality three phase cells. This series of power factor correction capacitor cells is normally used in applications where there is food processing. This series of power factor correction capacitors is suitable for low voltage linear applications

Construction

The three phase cells which are used in the construction of the power factor banks are drawn steel rectangular cans which are vacuum-impregnated with a dielectric fluid to give added insulation, excellent corona protection, and a moisture barrier. The single and multiple assembly capacitor cell design units come with a manufactured 16 gauge steel weatherproof cover, and they have provision for floor, wall, or ceiling mounting pedestals. The single cell units come equipped with main lug connection, and the multiple assembly units incorporate a copper buss arrangement with a main lug connection.

Capacitor Cell Design

  • The dielectric fluid used in the capacitor cells is a green Non-PCB, non-toxic, biodegradable, and Class III combustible fluid.
  • Self-healing technology in case of overload, the self-healing properties of the low loss metallized polypropylene will prevent permanent dielectric breakdown.
  • Internal Pressure-Sensitive Interrupter which safely removes the capacitor from service at the end-of-life or under heavy fault conditions while still maintaining the integrity of the steel casing.
  • Internal resistors discharge voltage is less than 50 volts in less than 1 minute after the cell has
  • Electrically been removed from circuit.
  • Standards – UL810, C22.2 No. 190 Canadian Standards, ANSI/IEEE 18, IEC 831, NEMA CP-1, UL Recognized CYTW2, and cUL Recognized CYTW8

Capacitor Losses

The capacitor design has a total loss which is less than .5 Watts per kVAR at 60 HZ 25 degrees C.

Tuning Filter Reactors

  • The tuning filter inductors which are tuned to the 4.7th level are designed for harmonic filtering and U. L. component recognized. Construction consists of copper wire wound on steel cores, and the tuning filter inductors are rated for three phase operation. They are also designed and rated for 150% of the normal 50 HZ capacitor current (1.44 amperes per kVAR at 480 VAC/50HZ). Design maximum temperature rise for the tuning filter inductors is 115 degrees Celsius.
  • The core is made of laminated grain oriented electrical steel (Grade M6 or better). The brackets are ASTM structural steel or structural aluminum. The coils are wedged in place and core locked in place using vertical ties or rods.
  • The windings are copper wire (MW35C – round) (MW36C -rectangular) or copper foil. Terminations consist of tin plated copper alloy ring lugs, U. L. recognized terminal blocks, or solid copper bus. The terminations are pressure crimped or TIG welded to the windings. Sheet insulation is DuPont Nomex 410 of thickness as required for U.L. insulation systems.
  • The tunings filter inductors are double impregnated (vacuum/pressure impregnated and baked by varnish dip and bake). The insulation system is rated Class H (180 degrees Celsius) at 600 VAC. The inductors are Hi-Pot tested (2500 VAC – 50 HZ for 1 minute) line-to-line and line-to-ground.
  • The tuning filter inductors are air gapped to avoid saturation. The inductance is measured under full load and within (+/-) 5% of design value. Inductor losses in watts per unit are no greater than those listed in U.L. file #E116124.

Electrical Characteristics

  • 240 VAC, 480 VAC, 600 VAC rated Voltage at 60 HZ
  • The three phase capacitor internal connection is Delta.
  • Capacitance Tolerance is + or – 15%.
  • Overcurrent Tolerance is 135% of rated current continuously.
  • Overvoltage Tolerance is 110% of rated voltage
  • Standard Operating Temperature is -40 F to +115 F. Operation above 115 F will shorten the capacitor life.

Wiring Cable Insulation

All internal conductors are insulated stranded copper wire rated at 90 C.

Fuse Protection & Indicator Lights (Optional – Add Suffix Letter “L” to Catalog Number)

The internal protection fuses are time-delay and rated at 600 VAC with the sizing based upon the nominal amperage rating of the kVAR size in accordance with the National Electric Code requirements.

WARRANTY

5-YEAR WARRANTY on the capacitor cells

  • For single phase applications change Prefix Number from 3 to 1 on the Catalog Number.
  • For 208 VAC applications divide kVAR size by .75 to find equivalent in 240 VAC rated size.
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