TDK TDK Electronics · TDK Europe

Power Capacitors for AC Filtering

With the increasing importance of power quality, TDK is focusing on AC filtering solutions. They are available with different terminal configurations and electrical parameters. Thanks to their simple design (round winding in an aluminum can), these widely used components offer high reliability at the same time. TDK portfolio features two basic AC filter capacitor designs: single-phase and three-phase capacitors. When AC capacitors are used as filters, they suppress harmonic distortions and reactive power problems, thus improving power quality and reliability. 


Products

Series B3237*

Single-Phase Capacitors

Capacitor series for input/output AC filtering for single phase loads
  • Voltage range of 250 to 1000 VRMS 
  • Rated capacitance of 5 to 600 µF
  • Overpressure disconnector
  • Available with fast-on, screw (M6 and M10) and clamp terminals
  • Type series B32370*, B32371*, B32373*, B32374*
Series B323277*

Three-Phases Capacitors (Delta Connection)

Capacitor series for input/output AC filtering for three phase loads in delta connection
  • Voltage range of 250 to 1000 VRMS (line-to-line)
  • Rated capacitance of 3x10 to 3x600 µF
  • Overpressure disconnector
  • Available with fast-on, clamp and screw terminals
  • Type series B3275*, B32376* and B32377*
B32378*

Three-Phases Capacitors (Star Connection) 

Capacitor series for input/output AC filtering for three phase loads with neutral line in star connection
  • Voltage range of 250 to 1000 VRMS (line-to-line)
  • Rated capacitance of 3x50 to 3x250 µF
  • Overpressure disconnector
  • Type series B32378*

Benefits

[---Image_alt---] 1 Sealed Pic

Hermetically sealed

  • No humidity can enter
  • No resin leakage
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Self heating properties

  • Flat copper stripe connections routed to the outside of the windings: better heat dissipation and longer lifetime
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Safety mechanism, tear-off fuse 

  • With increasing pressure inside of the capacitor, the metal cover will bulge and both terminals disconnect from copper band
  • Improved design against vibration and mechanical shock

Applications

Power inverter applications

A typical inverter would need AC capacitors for filtering of harmonic distortions and reactive power. Depending of the power electronic topology single-phase or three-phase capacitors can be use in their different variant of terminals (fast-on, screw and clamp terminals) according to the electrical parameters needed. The appropriate film capacitors for input and output filters of inverter systems are AC Filter capacitors.

Block Diagramm in medium power inverters

Block Diagramm in medium power inverters


Suitable for

Drives
Traction
UPS
Solar
E-Mobility
Wind

Get data sheets

PDF Type Application Style Number of phases Rated capacitance (µF)
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B32370, B32371, B32373, B32374 General purpose,  AC-filtering MKD AC 1 10 - 600
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B32375, B32376, B32377, B32378 General purpose,  AC-filtering MKD AC 3 5 - 400
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B32361, B32362 General purpose,  UPS systems,  Wind power,  (Not for new design) MKP AC 1 20 - 600

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

  • Installation and maintenance instruction for capacitors, FilterCap MKD AC B32370, B32371, B32373, B32374, B32377
  • ZVEI - General safety recommendations for power capacitors

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.


Get more information

[---Image_alt---] MKD AC Capacitors
Product Brief

MKD AC Capacitors for AC Filtering in Power Electronics Applications

  •  Overview of 1-phase and 3-phase power capacitors of the B33331V and B3237* series
  • Information on applications, block diagrams, technical data and dimensional drawings
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