UCAP - LV Capacitor Bank

Capacitor Bank Click image to zoom

LV UCAP is a three‐phase, metal enclosed, air‐insulated switchgear and all the units are factory‐assembled, Routine‐Tested and suitable for outdoor applications up to 690 V. The units are designed are fitted with busbar system. Each steps are equipped with LV fuses, contactors special for capacitor switching, inrush current choke and capacitor.

Details of the technical design and configuration of individual switchgears, such as the technical data, detailed equipment lists for the individual panels and comprehensive circuit documentation etc., can be found in the relevant engineering documents.


Standards and Specifications

400 V Capacitor bank panels comply with the related standards and specifications IEC-61439-1/2 and IEC 61921


Enclosure and Partitioning

The internal parts of switchgear are separated with partitions with thickness of 2 mm and high quality painted steel sheets. The front of the panel is closed off by pressure resistant doors which open to an angle of almost 180°.

Doors and rear walls as well as the cover plates are thoroughly cleaned and treated against corrosion before receiving a high quality coating of paint. The finishing coating are RAL code of 7032 as a default (special colors on request).


Power factor correction system consists of the following components:

  • Reactive power controller (regulator) for automatic entry and exit steps.
  • Contactor suitable for capacitive switching.
  • Fuse-Switch or Circuit breaker as protection device of each step.
  • Capacitor
  • Harmonic filter (if required)


Electrical Data

Rated insulation Level Ui V AC 690
Rated operating voltage Ue V AC 690
Rated impulse withstand voltage Uimp kV Depending on the electrical equipment
Rated normal current In On Request
Rated short-time withstand current Icw/tcw kA/Sec On Request
Rated frequency Hz 50 - 60
Rated peak withstand current Ipk kA On Request
Rated auxiliary voltage Ua V AC / V DC On Request
Applicable standard IEC IEC-61439-1/2
Rated Power Frequency Voltage kV 1.89
Total Capacity kVAR On Request
No. of Steps No. On Request
Degree of Protection IP On Request